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Express NTU User Manual

1. The digital CPE does not transmit digital signals containing encod ed analog content or billing information which is intended to be de coded within the telecommunications network The encoded analog content and billing protection is factory set and is not under the control of the customer I attest that the operator s maintainer s of the digital CPE responsi ble for establishment maintenance and adjustment of the encoded analog content and billing information has have been trained to per form these functions by successfully having completed one of the fol lowing check appropriate blocks A A training course provided by the manufacturer grantee of the equipment used to encode analog signals or B A training course provided by the customer or authorized repre sentative using training materials and instructions provided by the manufacturer grantee of the equipment used to encode analog sig nals or C An independent training course e g trade school or technical institution recognized by the manufacturer grantee of the equip ment used to encode analog signals or D In lieu of the preceding training requirements the operator s maintainer s is are under the control of a supervisor trained in ac cordance with circle one above lagree to provide telco s name with proper documentation to demonstrate compliance with the information as provided in the preceding paragraph if so requeste
2. 1 Connect the Express NTU to an ISDN U line using the RJ 45 telephone cable provided NOTE To default to factory configuration while powering up the Express NTU lift dip switch 2 on the rear panel The Express NTU initiates a self test upon power up A continuously flashing PWR LINE LED for more than a few seconds signifies a problem between the NTU and the ISDN line When properly con nected to an ISDN U line the PWR LINE LED illuminates and re mains on This signifies that the ISDN U link is up and the Express NTU is ready for operation If the PWR LINE LED does not illumi nate and remain on check your network connections If the LED re mains off check the power connection Refer to Troubleshooting on page 5 1 for detailed troubleshooting instructions 2 Connect the NTU to a PC with a communication package or a to a VT 100 terminal with an EIA 232 cable NOTE The NTU can adjust to any asynchronous DTE rate if you type AT and press Enter The NTU should respond with OK 61200200L1 20 Express NTU User Manual 3 3 Chapter 3 Installation and Operation 3 Prior to operating the Express NTU configure the unit in one of the following manners the configuration process is discussed in general in later sections of this chapter and detailed in Configura tion on page 4 1 1 Use the built in Express NTU menu system This requires an asynchronous VT 100 terminal or personal com puter with asynchronous VT 100 emulation capabilit
3. dialing options 4 23 23 answer call 4 23 test screen 3 7 61200200L1 20 Express NTU User Manual Index 5 Index 61200200L1 20 Express NTU User Manual Index 6 Product Support Information Presales Inquiries and Applications Support Please contact your local distributor ADTRAN Applications Engi neering or ADTRAN Sales Applications Engineering 800 615 1176 Sales 800 827 0807 Post Sale Support Please contact your local distributor first If your local distributor can not help please contact ADTRAN Technical Support and have the unit serial number available Technical Support 888 4ADTRAN Repair and Return If ADTRAN Technical Support determines that a repair is needed Technical Support will coordinate with theCustomer and Product Ser vice CaPS department to issue an RMA number For information re garding equipment currently in house or possible fees associated with repair contact CaPS directly at the following number CAPS Department 256 963 8722 Identify the RMA number clearly on the package below address and return to the following address ADTRAN Inc CAPS Department 6767 Old Madison Pike Progress Center Building 6 Suite 690 Huntsville AL 35807 RMA
4. 2 0 ff with LOCD 3 0 ff link down 34 DTE DTR Determines how the Express NTU responds to changes in DTR This is a bitmapped register O Ignore DTR 1 Force AT command mode when DTR is off 2 Dump incoming call when DTR is off 4 Hang up incoming call when DTR is off 8 Hang up outgoing call when DTR is off 16 Answer incoming call when DTR is on 28 Idle when off 32 Dial SN 0 when DTR is on 64 Dial SN 0 when DTR transitions from off to on 61200200L1 20 Express NTU User M anual A 9 Appendix A AT Commands and S Registers 35 DTE CONN Determines which is the current operating DTE connector 0 EIA 530 connector 1 V 35 connector 2 EIA 232 connector default for offline operation S40 BOND TXIN IT Specifies the number of seconds the originating endpoint attempts to detect the Async BO N D ING negotiation pattern from the answering endpoint before deciding the Async BON D ING call has failed 0 to 255 Default 10 S41 BON D TXFA Specifies the number of seconds both end points attempt to detect the async BO N DIN G frame pattern when a call is connected before deciding the async BON DING call has failed W hen operating with other manufacturer s async BON DING equipment it may be neces sary to lengthen this timer so that it matches TXADDO1 0 to 255 Default 10 S42 BOND TXADDO1 The number of seconds both endpoints wait for the additional call to be conne
5. 38400 56000 5 4800 19200 38400 A 48000 19200 38400 38400 57600 19200 38400 19200 38400 DIAL56K 56000 4800 19200 38400 56000 4800 19200 5 48000 38400 57600 A 19200 38400 DIAL64K 2 DIAL56K 2 LEASED 64K Clear Chan 56000 64000 LEASED Clear Chan 128K 1 All asynchronous rates support flow control 2 All dial up modes support front panel DTR AT command and NOTE V 25 bis dialing methods 3 Rates marked with f require flow control 4 Given a choice between two protocols pick the protocol closer to the top of the list for the circuit type 1 4 Express NTU User Manual 61200200L1 20 Chapter 2 Ordering ISDN ISDN is a complex service with many network options Obtaining ser vice from the local telephone company and long distance providers can be complicated The development of ISDN ordering codes IOCs simplifies the pro cess of ordering ISDN service The ISDN Solutions Group a consor tium of ISDN equipment vendors service providers and Bellcore established these codes to represent predetermined line configura tions for ISDN Basic Rate service for specific applications ADTRAN and Bellcore have registered and tested eight generic IOCs These IOCs are supported by all major local exchange carriers as well as several independent carriers Capability S previously Generic Data M ordering code is the most feature rich and supports most voice and data applicatio
6. V 120 Asynchronous Hardware Ignore DTR Hardware Express NTU User Manual 4 19 Chapter 4 Configuration Dial Bond asyn When the Express NTU is configured for Dial Bond asyn service the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol DTE mode DTR option DTE flow control Internet 64K ISDN dial line Enabled Data 64k Bonding Mode 1 Asynchronous Ignore DTR Hardware When the Express NTU is configured for Internet 64K service the fol lowing parameters are automatically preset Service type Automatic answering ISDN call type Data protocol PPP Mode DTE mode DTR option DTE flow control More ISDN dial line Enabled 64 kbps data PPP asyn sync PPP Asynchronous Ignore DTR Hardware Select More to access the following level of choices 4 20 Express NTU User Manual 61200200L1 20 Internet 128K Chapter 4 Configuration When the Express NTU is configured for Internet 128K service the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol PPP Mode DTE mode DTR O ptions DTE flow control Remote 64K ISDN dial line Enabled 64 kbps data PPP asyn sync Multilink PPP Asynchronous Ignore DTR Hardware When the Express NTU is configured for Remote 64K service the fol lowing parameters are automatically preset Service type Automatic answering ISDN call type
7. auto answer 4 4 disabled 4 4 dump all calls 4 4 enabled 4 4 auto detect SPIDs switch 4 2 configuration 3 8 4 1 auto detect SPIDs switch type 3 8 auto detect switch SPIDs remain at link down 5 2 B B1 and B2 LEDs flash green 5 2 off 5 1 B channel aggregation 6 2 bit rate 4 9 BONDING mode 1 4 11 4 12 C call ID format determining 4 5 call screening 4 5 determining call ID format 4 5 61200200L1 20 Express NTU User Manual call type 4 3 CCITT V 110 4 11 CCITT V 120 4 11 CCP 4 14 channel rate 4 7 clear channel 4 11 clock mode 4 6 compression central protocol 4 14 configuration 3 4 3 8 4 1 auto detect SPIDs switch 3 8 4 1 for leased operation 4 6 for V 25 bis in band dialing 4 24 profiles 4 15 quick setup 4 15 using AT commands A 2 configuration screen accessing the 3 4 illustration 3 6 connect timeout 4 5 connector pinouts E 1 EJA 232 interface E 1 EIA 530 interface E 2 RJ 45 ISDN interface E 4 V 35 interface E 3 connector type 4 10 current status messages B 1 D data rates 6 1 default 4 16 dial 112K sync 4 17 dial 128K sync 4 18 dial 56K sync 4 16 dial 64K sync 4 17 dial bond asyn 4 20 dial menu 3 7 Index 1 Index dial number 4 23 dial operation configuring for 4 1 dial options 4 5 AT commands 4 6 V 25 bis 4 6 dial stored number 4 23 dial V120 asyn 4 19 dialing 1 2 sync V 25 4 25 sync V 25 bisync 4 26 sync V 25 HDLC 4 25 V 25 bis in band 4 24 dialing a call with AT co
8. to select an option Test Remote This test causes the Express NTU to issue a V 54 inband loopback com mand to a far end unit and BERT test the link using a built in pattern generator checker This allows a circuit to be tested without any extra test equipment To use this feature both units must be configured for 4 26 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration Clear Channel operation and the far end unit must be able to respond to V 54 loopback commands See the section Setting Protocol Options on page 4 11 to configure the unit for Clear Channel operation The built in 2047 pattern generator checker displays the number of bytes trans mitted on the top line and the number of errored bytes received on the lower line of the front panel display Pressing 0 clears the counts Pressing Cancel ends the test Loopback Protocol This option allows data to be looped back toward the network after passing through a selected protocol such as BONDING See Figure 4 1 for loopback points NET DTE Network RATE Protocol DTE cia NETWORK ADAPTION IFCE IFCE Figure 4 1 Express NTU Loopback Points Lpbk Proto Timeout 1 min This option sets the length of time for the loopback protocol test Loopback Disable V54 Accepted The Express NTU responds to V 54 loopback commands Near End Block Errors Far End Block Errors NEBE FEBE Use this test to determine the quality of the network connection by viewing the number of ne
9. 24 changing A 2 changing a string A 3 reading A 2 reading a string A 2 using A 2 STAC compression 4 14 status buffer 4 26 status buffer messages C 1 store review number 4 23 switch compatibility 6 2 switch protocol 4 2 switch settings 3 1 sync V 25 bisync dialing 4 26 sync V 25 dialing 4 25 sync V 25 HDLC dialing 4 25 T technical support 1 1 terminal interface menu screens 61200200L1 20 Express NTU User Manual configuration screen 3 6 dial screen 3 7 test screen 3 7 test menu 3 7 test options 4 26 loopback protocol 4 27 lpbk proto timeout 1min 4 27 NEBE FEBE 4 27 test remote 1B 4 26 test remote 1B 4 26 transmit clock sync 4 9 troubleshooting 5 1 auto detect switch SPIDs re main at link down 5 2 difficulty with 230 4 operation 5 2 if the express NTU does not read ready 5 3 if you are unable to connect calls 5 8 power line LED flashes and B1 and B2 LEDs are off 5 1 power line LED is off 5 1 power line LED B1 and B2 LEDs flash green 5 2 U unpacking 3 1 upgrading software F 1 V 110 4 11 4 13 V 120 4 11 4 13 V 25 bis 4 6 in band dialing 4 24 sync V 25 bisync dialing 4 26 sync V 25 dialing 4 25 sync V 25 HDLC dialing 4 25 V 35 interface E 3 V120 asyn 4 19 VT 100 configuration 3 8 Index 4 Index VT 100 terminal dial number 4 23 accessing the configuration dial stored number 4 23 screen 3 4 hang up line 4 23 configuration screen 3 6 redial last number 4 23 dial screen 3 7 store review number 4
10. 3 RD 0 Received Data 4 RTS Request to Send 5 CTS 0 Clear To Send 6 DSR O Data Set Ready 7 SG VO Signal Ground 8 CD 0 Carrier Detect 9 NC N7A No Connection 10 NC N7A No Connection II NC N7A No Connection 12 NC N7A No Connection 13 NC N7A No Connection 14 NC N7A No Connection I5 ITC 0 Transmit Clock 16 NC N7A No Connection 17 RC 0 Receive Clock 18 NC N7A No Connection 19 NC N7A No Connection 20 DTR Data Terminal Ready ZI NC N7A No Connection 22 Ri O Ring Indicator 23 NC N7A No Connection 24 ETC External Transmit C lock 25 NC N7A No Connection T Input O Outout N7A NotApplicable 61200200L1 20 Express NTU User M anual E 1 Appendix E Connector Pinouts Table E 2 EIA 530 Interface Description Shield for cable Transmitted Data Received Data Request to Send Clear To Send Data Set Ready a 3 z 9 3 or e w 77 0 4377 32 o0oo0oo0o7o0o070o0o0os90070 TS H e O OO 4 oF OF B amp B WY NF oO D SG 0 Signal Ground CDA Carrier Detect RCB Receive Clock return 0 CDB Carrier Detect return I ETC B External Transmit Clock return 12 Transmit C lock return 13 CTS B Clear To Send return P N18 are 14 TDB Transmit Data return rererere NO FEMALE I5 TCA Transmit C lock PIN 25 Sng m ez lee Receive Data return Receive Clock No Connection Request To Send return Data Terminal Read
11. Call request using stored number PRN Program stored number RLN List stored number CIC Connect incoming call DIC Disconnect incoming call NOTE When using stored numbers V 25 bis accesses stored numbers 1 through 9 See the section VT 100 Terminal Dialing Options on page 4 23 4 24 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration SYNC V 25 Dialing V 25 bis specifies that the characters should be ASCII 7 bits with even par ity and one stop bit However for versatility the Express NTU allows the data bits parity and stop bits to be changed as defined under Data format This setting allows for V 25 bis messages in asynchronous start stop data format In synchronous mode the Express NTU is an ISDN version of a synchronous modem For configuration or troubleshooting the unit requires connection to an async VT 100 terminal and the dial option must be set to AT Commands After the unit is completely configured set the dial option to V 25 bis and exit the VT 100 NOTE terminal interface The unit is now ready to respond to V 25 bis dialing commands If it is necessary to reenter the VT 100 interface for re configuration troubleshooting or to view the status buffer perform the following steps 1 power the unit off 2 set dip switch 2 to off up for factory default AT commands 3 power the unit back on 4 set dip switch 2 to on down 5 type AT V to activate the terminal interface SYNC V 25
12. Data protocol DTE mode DTR O ptions DTE flow control Transmit data clock 61200200L1 20 ISDN dial line Enabled 64 kbps data V 120 Asynchronous Ignore DTR Hardware N ormal Express NTU User Manual 4 21 Chapter 4 Configuration Remote 128K When the Express NTU is configured for Remote 128K service the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol DTE mode DTR O ptions DTE flow control Leased V120 ISDN dial line Enabled 64 kbps data Bonding Mode 1 Asynchronous Ignore DTR Hardware When the Express NTU is configured for Leased V120 service the fol lowing parameters are automatically preset Service type N etwork clock source Channel rate Data protocol DTE mode DTE connector bit rate DTE flow control Transmit clock 4 22 Leased line M aster 64K V 120 Synchronous 64 kbps Hardware Normal Express NTU User Manual 61200200L1 20 Chapter 4 Configuration VT 100 TERMINAL DIALING OPTIONS After starting the terminal emulation package type AT V and press Enter Enter the Express Dial menu by pressing Ctl D Hang up line Terminates current call Dial number Allows a number to be entered and dialed Pressing Enter after enter ing anumber causes the Express NTU to dial the number and save the dialed number in storage location 9 for redialing purposes Redial last number Allows redial of the last number called
13. EXPRESS NTU DOES NOT READ READY When the Express NTU has been set up and connected to a line but the Loop LED does not remain on after a few minutes follow the trou bleshooting procedure outlined below 1 Cycle power on the Express NTU leaving it off for a minimum of two seconds then turn the power on for one minute to ensure the Loop LED still does not come on Disconnect the Express NTU From a functioning voice phone call the local directory number s provided with your ISDN line Calling a good ISDN line with nothing connected usually results in a ring or fast busy tone If someone answers or you get a not in service intercept there is probably something wrong with the translation of the ISDN line The phone service provider should be able to help If the Loop LED still remains off then there is a physical problem with the ISDN phone line more than likely a problem with the layer 1 setup The problem is one or more of the places listed below e The Express NTU software setup e The Express NTU hardware e The wiring on your premises e The telephone service provider s wiring e The telephone service provider s hardware e The telephone service provider s software setup To isolate the problem perform the following procedure A Ensure the ISDN line is plugged into the Express NTU connector marked ISDN on the back of the Ex press NTU B Make sure the Express NTU is configured for Dial line service C If possible t
14. HDLC Dialing Although V 25 bis allows asynchronous data format asynchronous DTE is more likely to support the AT command set than V 25 bis This setting provides V 25 bis messages in bit synchronous format for example HDLC SDLC X 25 The bit synchronous format is the most commonly used by V 25 bis This option specifies that the characters should be 7 bit ASCII with the 8th bit ignored it may be either 0 or 1 The first byte of each packet contains all one bits A FF HEX and the second byte of each packet the C byte is either 13 HEX or 03 HEX if not the final packet 61200200L1 20 Express NTU User Manual 4 25 Chapter 4 Configuration Select V 25 HDLC flags if your terminal equipment requires idle NOTE state flags gt V 25 BISYNC Dialing This setting allows for V 25 bis messages in byte synchronous format BISYNC V 25 bis specifies that the characters should be ASCII 7 bits and odd parity This setting allows synchronous DTE which does not use HDLC to support serial in band dialing THE STATUS BUFFER The status buffer is discussed in the section Configure the Express NTU on page 3 4 TEST OPTIONS Press Ctrl T to display the Express NTU Test menu screen The Ex press NTU provides the following test options 1 Test Remote 2 Loopback Protocol 4 Loopback Disable V54 Accepted 3 Lpbk Proto Timeout 1 min 5 NEBE FEBE Press the number corresponding to the desired option and press Enter
15. O Output N A N ot Applicable 61200200L1 20 Express NTU User M anual E 3 Appendix E Connector Pinouts Table E 4 RJ 45 ISDN Interface Pin 4 Ring PIN1 PIN8 Pin 5 Tip ISDN E 4 Express NTU User Manual 61200200L1 20 AppendixF Upgrading Software As features are added to the Express NTU software upgrades may be necessary The Express NTU has flash memory which allows the soft ware to be upgraded from a file obtained by contacting ADTRAN Technical Support The current version of software can be found in the Status menu To upgrade your Express NTU a PC running a terminal program sup porting XMODEM CRC is required Connect the PC to the Express NTU DB25 connector then set it to 57600 baud no parity and one stop bit Power off the Express NTU and perform the following steps 1 Type the following AT command AT flashload 2 Start downloading Select the download item from the menu 3 When the flash is erased the Express waits for XMODEM CRC transfer to begin 4 Use the terminal emulation software to begin uploading the file provided by ADTRAN 5 The Express performs a checksum to verify the download 6 A failure to load will be indicated on the terminal Power the Express off and begin again with step 1 61200200L1 20 Express NTU User M anual F 1 Appendix F Upgrading Software F 2 Express NTU User Manual 61200200L1 20 Acronyms B Channel A 64 kbps
16. Rate can be set asynchronously for 300 1200 2400 4800 9600 19200 38400 57600 115200 and 230400 bps and synchronously for 2400 4800 9600 19200 38400 48000 56000 64000 112000 and 128000 bps Transmit Clock for Synchronous Data Press the number corresponding to Transmit Clock and press Enter to display the Transmit Clock options Normal and External Select the desired option Selecting the Normal option causes the Express NTU to be the syn chronous DTE interface transmit timing source Transmit data is timed from the transmit clock provided by the Express NTU on the DTE connector Normal clock is the normal mode of operation for the Express NTU With the External option selected the Express NTU slaves to an exter nal transmit timing source The external clock is provided to the Ex press NTU by the external transmit clock signal at the DTE This signal is echoed by the Express NTU to the transmit clock signal on the DTE port This option is provided for situations where equipment connected to the Express NTU DTE connector cannot slave to the Express NTU provided clock The Express NTU uses the U interface as the frequen cy standard when it must provide a synchronous receive or transmit clock When using the Express NTU in a Tail Circuit application it may be necessary to add delay to accommodate clock jitter Entering a number from 0 255 under TxRxDelay will yield the size of the delay buffer which is approximately 8x
17. RegisterS 6 666 4 24 Configuring the Express NTU for V 25 bis In band Dialing 4 24 SYNC V25 Dialing sae het oath a E Ea 4 25 SYNC V 25 HDLC Dialing 0 0c eee 4 25 SYNC V 25 BISYNC Dialing 0 0000 4 26 The Status Buffer 0 0 00 ccc ce eee eee 4 26 TESHOPHONS rensei ian aara he sree avn d hatha ete 4 26 TeSUREMOtC 25h creas we E seats Chall See Si hed 4 26 Loopback Protocol 6 6 66 4 27 Lpbk Proto Timeout 1 min 6 00 cee eee 4 27 Loopback Disable V54 Accepted 0006 4 27 Near End Block Errors Far End Block Errors NEBE FEBE 4 27 Chapter5 Troubleshooting 0 cece eee cece eens 5 1 Troubleshooting Guidelines 0 6 c cece eee eee 5 1 Power Line LED is Off surre derse eiae ee cece eee 5 1 Power Line LED Flashes and B1 and B2 LEDs are Off 5 1 Power Line LED B1 and B2 LEDs Flash Green 5 2 Auto detect Switch SPIDs Remains at Link Down 5 2 Difficulty with 230 4 kbps Operation 008 5 2 If the Express NTU does not read Ready 5 3 If you are unable to connect calls 2 0 0 0 eee eee eee 5 8 Chapter6 Specifications 0 0 ccc cece eee ees 6 1 Specifications and Features 0 00000000008 6 1 Network Interface 0 0 ccc cee eee 6 1 DTE Interface nais hace Sees oh bs Pew is Te eB a 6 1 Dialing Selections sssi reret airia a a a a aA 6 1 Dat
18. Status menu The last 20 status messages generated during the operation of the unit are displayed with relevant status items see Fig ure 3 3 Status messages provide information about call progress ISDN link status and error conditions The most recent status message appears as Status 1 with the remaining status messages appearing in ascending order Status Buffer Messages on page C 1 contains a list of the status buffer messages including their descriptions Press Ctrl C to return to the Configuration menu To exit the menus press Ctrl X The Ctrl X command also places the unit back on line if a call is connected Follow these steps to configure the unit Configuration on page 4 1 gives detailed information on configuring the Express NTU using a VT 100 terminal or PC with asynchronous VT 100 emulation capabili ties Press Ctrl C to display the Configuration screen Enter the area code Enter ISDN phone number 1 Enter ISDN phone number 2 Enable Auto Detect SPIDs Switch see Auto Detection of SPIDs Switch Configuration on page 4 1 DRIES a 6 View the status by using the key sequence Ctrl V as described previously 61200200L1 20 Express NTU User Manual 3 5 Chapter 3 Installation and Operation It is important to note that some features in the Express NTU do not immediately take effect upon selection This prevents unintentional reconfiguration of the unit during an active call Items such as Proto col and Cal
19. The affidavit shall affirm that either no encoded analog content or billing information is being transmitted or that the output of the device meets Part 68 encoded analog content or billing protection specifications End user customer will be responsible to file an affidavit with the local exchange carrier when connecting unprotected CPE to a 1 544 Mbps or subrate digital service Until such time as subrate digital terminal equipment is registered for voice applications the affidavit requirement for subrate ser vices is waived AFFIDAVIT FOR CONNECTION OF CUSTOMER PREMISES EQUIPMENT TO 1 544 MBPS AND OR SUBRATE DIGITAL SERVICES For the work to be performed in the certified territory of telco name State of County of L name business address telephone number being duly sworn state I have responsibility for the operation and maintenance of the termi nal equipment to be connected to 1 544 Mbps and or subrate digital services The terminal equipment to be con nected complies with Part 68 of the FCC rules except for the encoded analog content and billing protection specifications With respect to encoded analog content and billing protection I attest that all operations associated with the establishment main tenance and adjustment of the digital CPE with respect to encoded analog content and billing protection information continuously com plies with Part 68 of the FCC Rules and Regulations
20. Z2 Stored number 2 amp Z3 Stored number 3 amp Z4 Stored number 4 amp Z5 Stored number 5 amp Z6 Stored number 6 amp Z7 Stored number 7 amp Z8 Stored number 8 amp Z9 Stored number 9 61200200L1 20 Express NTU User M anual A5 Appendix A AT Commands and S Registers Command Function Local Echo O ptions E0 Echo off Does notallow command characters typed to be displayed on the screen El Echo on Allows the command characters typed to be displayed on the screen Unit Identification Identifies unit Commands the unit to display model number 11 Identifies software Commands the unit to display software version 12 Identifies lists AT Command Response M essage O ptions Q0 Response messages on Q1 Response messages off AT Command Response M essage Types vo N umeric response messages V1 Verbal response messages AT Command Connect M essage O ptions X0 Simple connect message X1 7 Connect messages with bit rate Ready lo Send RTS Control Line O ptions DO 1 mS delay DI 18 mS delay M akeBusy O ptions B0 Make DTE port not busy same as 135 0 _B1 Make DTE port busy same as S135 1 Service Profile Identification SPID O ptions _l0 Access SPID1 for DTE 1 I1 Access SPID2 for DTE 2 Local Directory N umber LDN Access O ptions NO A
21. are available with this option 61200200L1 20 Express NTU User Manual 4 7 Chapter 4 Configuration Ericsson Local When this option is set the Ericsson multiplexer connected to the Ex press NTU can perform loopbacks or read the settings for the bit rate and the connector type NOTE Tre Express NTU can only be configured from the EIA 232 serial port Ericsson Remote When this option is set and Ericsson multiplexer remotely connected to the Express NTU can read the status of the Express NTU perform loopbacks or configure the product A device connected to the Ex press NTU can read the status for the bit rate and the connector type NOTE In this configuration DTE leads and flow control cannot be set and only V 110 and Clear Channel protocols are supported The NTU can only be configured from the network OPTIONS FOR BOTH LEASED AND SWITCHED ISDN SERVICE This section describes the options that apply to both leased digital ser vice and dial operation To access these options first go to the Config uraton menu as described in the section Configure the Express NTU on page 3 4 DTE Options Press the number corresponding to DTE Options and press Enter to display the DTE options Asynchronous and Synchronous Select the desired option 4 8 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration Bit Rate Press the number corresponding to Bit Rate and press Enter to display the Bit Rate options The Bit
22. by an authorized Ca nadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment mal functions may give the telecommunications company cause to re quest the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas 1 N 5 Users should not attempt to make such connections W ARNI themselves but should contact the appropriate electric inspection authority or an electrician as appropriate vii The Load Number LN assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading The termination on a loop may consist of any combination of devices subject only to the re quirement that the total of the Load Numbers of all devices does not exceed 100 viii AFFIDAVIT REQUIREMENTS FOR CONNECTION TO DIGITAL SERVICES An affidavit is required to be given to the telephone company whenever digital terminal equipment without encoded analog content and billing protection is used to transmit digital signals containing encoded analog content which are intended for even tual conversion into voiceband analog signals and transmitted on the network
23. digital information channel BONDING Bandwidth On Demand Interoperability Group bps tivcesienctindgaes Bits per second BR wge chet nen Basic Rate Interface COLET pinsi Consultative Committee for International Telegraphy and Telephony Carrier Detect Carrier Identification Code Customer Premises Equipment Clear to Send Data Communications Equipment Digital Data Service Direct Memory Access Digital Multiplex Switching Data Set Ready Data Terminal Equipment Electronic Industries Association Far End Block Errors Identification Input Output Integrated Services Digital Network Kilobits per second Kilohertz Local Area Network Local Access and Transport Area Local Directory Number Low Layer Compatibility ISDN Megabits per second Multi Frequency Signalling NEBEviiteacsiciceess Near End Block Errors 61200200L1 20 Express NTU User Manual Acronyms 1 Acronyms National ISDN 1 National ISDN 2 Network Termination Private Branch Exchange Personal Computer Plain Old Telephone Service Random Access Memory Read Only Memory Service Profile Identifier Signalling System 7 Terminal Adapter Terminal Equipment Terminal Endpoint Identifier Wide Area Network Acronyms 2 Express NTU User Manual 61200200L1 20 Glossary ANSI American National Standards Institute B Channel 64 kbps bearer channel used for voice circuit or packet switched data bearer service As defined by CCITT standards a type of t
24. el SEAL ASE ea Dumpall calls sy S00 soe Wea ti eee Call Screening icc cit aetna Mga tt Sac rer R Sate DREES DialOptions oit ei ee er eed oe vane tne ea ned E AT Commands dieras ae cc eect een nee Configuring the Express NTU for Leased Digital Service Clock Mode Slave Master 00 c ccc eee eens Chanriel Rate 4 24 date ee E eh oh teh SPR AE AN ue Leased Configuration 6 6 6 6 c cece eee eee 61200200L1 20 Express NTU User Manual Table of Contents NGC sebandar he Bs a hd ee het aces Pan Meme aos 4 7 Ericsson Local saamarin agai se Bie ee a Mids 4 8 Ericsson Remote 0 00 ccc en een eens 4 8 Options for both Leased and Switched ISDN Service 4 8 DIB Options corer iet ail bien teach ee eee cos eee hee 4 8 Bit Rate toe taluk Nok ead Sie ie Pela lat en Sete a a Ak ks 4 9 Transmit Clock for Synchronous Data 0006 4 9 PIROPOS seuss ceesiaees e AEE seed eee ees 4 10 Connector Type sasoring eich ae Bale hana nas bees ates 4 10 Flow Control for Asynchronous Data 5 4 10 Setting Protocol Options 0c cece eee eee 4 11 Clear Channel 0 0 0 0 cc ccc ccc nent eens 4 11 Point to Point Protocol PPP Async to Sync 4 12 BONDING Mode 1 0 0 0 ccc cect ene ene 4 12 VD 20 aaa a bia ai ae dad peda Mes tava hele tae Shade 4 13 VAIO nies eh dt boone had eons Lan E 4 13 FALLBACK ao oorsee aid rece A ERE EAE ROE RE a BG 4 13 Multilink Poin
25. line is extended from the switch To isolate the problem perform the following procedure A Ensure the Express NTU is set up for the correct B C switch type Ensure the quality of your ISDN line is satisfactory by checking for near and far end block errors NEBEs and FEBEs If the counts are non zero there may be a physical link problem as described in step 3 If possible try another piece of functioning ISDN equipment with a U interface on the line D With the Express NTU connected to the ISDN line Express NTU User Manual 61200200L1 20 Chapter 5 Troubleshooting and powered up talk to your service provider s re pair group and tell them you have an ISDN basic rate line that appears physically okay but has no terminal endpoint identifier TEI Ask them to check the line translation and ensure that the line supports dynamic TEI allocation Tell them that you have an NT1 and terminal adapter device connected to the line 5 If the Loop Status in the Express NTU Status menu continuously reads Register SPID 1 then the Express NTU is physically con nected to your local telephone service provider and has estab lished logical layer 2 The Express NTU is unable to establish layer 3 The problem is in one or both of the following places e The Express NTU software setup e The telephone service provider s software setup To isolate the problem perform the following procedure A Ensure the Express NTU is set up
26. noise as they travel or are transmitted Analog signals aor he regenerated because it is very hard for telecommunications equipment to distinguish between un wanted noise and wanted noise Digital signals can be more easily re PAT since they consist of 1s and Os If digital signals are lattened or distorted a simple logic circuit can restore the signal to the original clean square shape R reference point Non ISDN TE2 terminal equipment connects to ISDN at the R Refer ence point through a terminal adaptor RS 232 C An EIA specified physical interface with associated electrical signal ling between DCE and DTE The most commonly employed interface between computer devices and modems RS 422 A Electrical characteristic of balanced voltage digital interface circuits RS 423 A Electrical characteristics of unbalanced voltage digital interface cir cuits RS 449 General purpose 37 position and 9 position interface for data terminal equipment and data circuit terminating equipment employing serial binary data interchange RS 449 1 Addendum 1 to RS 449 61200200L1 20 Express NTU User Manual Glossary 5 Glossary serving area Region surrounding a broadcasting station where signal strength is at or above a stated minimum The geographic area handled by a tele phone central office facility Generally equivalent to a LATA S interface S Reference point The interface that connects an ISDN terminal TE1 or Terminal Adapter T
27. numbers stored in SNO through SN9 an incoming call is not answered if the Call ID received from the switch does not match a stored number Depending on the switch type the Call ID may be presented in either a seven or ten dig it format The Express NTU displays the Call ID for all dumped calls in the Status buffer See the section Configure the Express NTU on page 3 4 for more information Because different switches handle calls and Call ID differently use the following procedure to determine if your switch uses a seven or ten digit Call ID format or phone number 1 Press the number corresponding to Call Screening and press Enter to view the Call Screening options 2 Select Ansr if SNO 9 Store your seven digit number in SNO Place a call to the Express NTU with the stored number to see if it answers 5 Ifthe Express NTU does not answer the call look at the Call ID message in the Status buffer More than likely the Call ID num ber is a ten digit number 6 Re store the number in SNO as it is displayed in the Call ID mes sage and test Call Screening again Dial Options Press the number corresponding to Dial Options and press Enter to view the Dial Options AT Commands and V 25 bis Press the num ber corresponding to the desired option then press Enter The select ed option will not take effect until exiting the VT 100 interface Ctrl X 61200200L1 20 Express NTU User Manual 4 5 Chapter 4 Configuration AT
28. one or two pairs of wires depending on the interface the same wire pairs that today bring a single voice circuit into your home or office See ISDN 23B D In ISDN also known as the Primary Rate Interface A circuit witha wide range of frequencies that is divided in twenty three 64 kbps paths for carrying voice data video or other information simulta neously It bears a remarkable similarity to today s T1 link except that T1 carries 24 voice channels In ISDN 23B D gives twenty three channels and one D channel for out of band E However in T1 signalling is handled in band See ISDN two wire circuit A transmission circuit composed of two wires signal and ground used to both send and receive information In contrast a 4 wire circuit consists of two pairs One pair is used to send One pair is used to re ceive All trunk circuits long distance are 4 wire A 4 wire circuit delivers better reception but also costs more All local loop circuits those coming from a Class 5 central office to the subscriber s phone system are 2 wire unless a 4 wire circuit is requested 61200200L1 20 Express NTU User Manual Glossary 7 Glossary U interface A twisted pair subscriber loop that connects the NT1 reference point to the ISDN network as defined in the I 411 Recommendation This interface provides Basic Rate Access with an operating frequency of 160 kbps and an information rate of 144 kbps Under U S regulations this also marks the
29. or attempted This number was saved in storage location 9 from the last attempted phone call Answer call Allows selective answer of incoming calls when the Auto Answer is configured for disable Auto Answer is described in the section Auto Answer on page 4 4 Dial stored number Allows the dialing of one of ten stored phone numbers Store Review number Permits entry and review of stored numbers 61200200L1 20 Express NTU User Manual 4 23 Chapter 4 Configuration AT COMMANDS AND S REGISTERS AT Commands and S Registers on page A 1 describes the use of AT com mands and S registers It also lists the supported AT commands and their functions and describes each S register CONFIGURING THE EXPRESS NTU FOR V 25 BIS IN BAND DIALING V 25 bis dialing is used primarily by DTE with synchronous interfaces HDLC SDLC or BSC BISYNC not supporting the AT command set which is commonly used by asynchronous devices The Express NTU supports V 25 bis in band dialing in accordance with Fascicle VIILI V 25 bis Malaga Torremolinos 1984 Melbourne 1988 Recommendation V 25 uses the following DCE DTE control signals Transmitted data Circuit 103 Received data Circuit 104 Ready for sending Circuit 106 Data set ready Circuit 107 Data terminal ready Circuit 108 2 Calling indicator Circuit 125 The Express NTU supports the following V 25 bis commands to con trol automatic calling and answering CRN Call request number in command CRS
30. registers See the section S Register List for a description of each S register and its corresponding range of values Reading an S Register Type ATS followed by the number of the S register to be read and a question mark and press Enter ATSO Reading an S Register String The Express NTU uses S register strings to store strings of digits for stored phone numbers SPIDs etc Type ATSS followed by the num ber of the string S register to be read and a question mark and press Enter ATSS80 Changing an S Register Type ATS followed by the number of the S register to be changed an equal sign and the numeric value to be assigned to the register and then press Enter ATSO 2 A 2 Express NTU User Manual 61200200L1 20 Appendix A AT Commands and S Registers Changing a String S Register Type ATSS followed by the number of the string S register to be changed an equal sign and the numeric string to be assigned to the register then press Enter ATSS80 5551212 Dialing a Call using the AT Command Processor To dial a call using the DTE terminal and AT commands type ATD ATDT or ATDP and the telephone number on one line then press Enter ATD5551212 To end an active call with the AT command processor press the break in key sequence or the redefined key then type ATH and press Enter to hang up the line Command Function A Answer Places the Express N TU in answer
31. sequence to occur the DTE must transmit the escape code character three times in succession with delay between each character being less than the guard time The default escape sequence is Once command mode is entered AT commands can be transmitted to the Express NTU to configure most of the options dial remote Express NTUs or initiate tests to check the Express NTU and the network con nections All command lines must begin with the AT character set in either capital or lower case letters To return an active call to the on line state type ATO Commands may be separated with spaces for readability The maxi mum length for a command line is 40 characters Each command line is executed by the Express NTU upon receipt of a terminating charac ter The default terminating character is a carriage return ASCII 013 but it can be changed by writing a different value to register S3 Before the terminating character is transmitted the command line can be ed ited by using the backspace character ASCII 008 to erase errors so the proper commands can be entered 61200200L1 20 Express NTU User M anual A l Appendix A AT Commands and S Registers Using an AT Command Type AT followed by the letter of the command and numeric value of the setting desired and then press Enter The following command re turns the software version of the unit ATI Using S Registers The configuration of the Express NTU can be changed or reviewed with S
32. the section Recommended Operating Protocols on page 1 3 and Table 1 1 on page 1 4 for available V 120 rates V 110 The V 110 protocol is a CCITT compliant rate adaption method which provides DTE service between the Express NTU and other V 110 com pliant devices V 110 supports synchronous and asynchronous DTE rates See the section Recommended Operating Protocols on page 1 3 in Chapter 1 and Table 1 1 on page 1 4 for available V 110 rates FALLBACK The FALLBACK asynchronous rate adaption protocol provides the capability to automatically establish calls with other ISDN terminal adapters Switched 56 DSUs PPP compatible bridges routers as well as other ISUs using a single configuration This allows for integrating services without changing the configuration on the Express NTU The Express NTU must be optioned as follows for FALLBACK opera tion e Any asynchronous bit rate up to 115 2 kbps which is supported by the DTE e Flow control must be enabled and supported by the DTE FALLBACK supports the following protocols based on the call type BONDING mode 1 V 120 and PPP async sync When answering calls the Express NTU uses the incoming call type to determine which rate adaption protocols to support When originating calls to unknown units the ISU begins protocol se lection based on the local call type Data 64k is used for FALLBACK 61200200L1 20 Express NTU User Manual 4 13 Chapter 4 Configuration selected from th
33. the number selected in bytes 61200200L1 20 Express NTU User Manual 4 9 Chapter 4 Configuration DTR Options Press the number corresponding to DTR Options and press Enter to display the DTR options Selecting Ignore DTR causes the Express NTU to disregard the state of the data terminal ready DTR pin Cmd when Off forces the unit into the AT command processor mode when DTR is not asserted To return on line DTR must be asserted followed by the ATO command Idle when Off forces the unit to end the current call when DTR is no longer asserted Off gt On dial 0 allows one call attempt to be auto matically established when the DTR signal goes from inactive to ac tive While DTR is active dialing is also possible through the built in menu system When DTR goes inactive any outgoing or incoming call present is disconnected Off gt On dial 0 uses the phone number in stored number register 0 to establish the call To store anumber for automatic dialing see the section VT 100 Terminal Dialing Options on page 4 23 Selecting Dial 0 if On allows calls to be automatically es tablished when the DTR signal is in the active state The unit attempts to establish a call using SNO until the call is established or DTR goes inactive Selecting Answer if On only allows the unit to answer an in coming call if the DTR signal is asserted Connector Type Press the number corresponding to Connector Type and press Enter to display the DTE options EIA
34. the user s authority to operate the equipment Vi CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference causing equipment standard entitled Digital Apparatus ICES 003 of the Department of Communications Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux appareils numeriques de Class B prescrites dans la norme sur le materiel brouilleur Appareils Numeriques NMB 003 edictee par le ministre des Communications CANADIAN EQUIPMENT LIMITATIONS Notice The Canadian Industry and Science Canada label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The Department does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord Compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made
35. 2 string SS83 SN3 LOC Stored number 3 string SS84 SN4LOC Stored number 4 string SS85 SN5 LOC Stored number 5 string SS86 SN6 LOC Stored number 6 string SS87 SN7 LOC Stored number 7 string SS88 SN8 LOC Stored number 8 string SS89 SN9 LOC Stored number 9 string S90 CONFERENCE ID N l 1 feature identification number for confer encing See the ISDN service provider for this ID 91 TRAN SFER ID N l 1 feature identification number for transfer ring See the ISDN service provider for this ID S92 MESSAGE N l 1 feature identification number for message WAITING ID waiting indicator See the ISDN service provid er for this ID 93 CALLTYPE Determines how incoming call is routed when ROUTING connected to a point to point ISDN line 0 Route all call types to DTE 61200200L1 20 Express NTU User M anual A 13 Appendix A AT Commands and S Registers A 14 Express NTU User Manual 61200200L1 20 AppendixB Current Status Messages This appendix lists the status line messages and their definitions Messages shown entirely in capital letters are generated by the ISDN network Messages with lower case letters are generated by the Ex press NTU Call Connect B1 Bearer channel 1 is connected and is active Call Connect B2 Bearer channel 2 is connected and is active CALL xxxxxxx The ISU is calling phone number xxxxxxx DEACTIVATED The network interface is not active DISCONNECTED The network has activated layer 1 but lay
36. 530 V 35 and EIA 232 Select the de sired option Flow Control for Asynchronous Data Press the number corresponding to Flow Control and press Enter to display the Flow Control options Selecting Hardware Flow Control allows RX data to be presented to the DTE interface only when RTS is asserted Software Flow control uses XON XOFF to control data transferred between the DTE and the Express NTU Selecting No Flow Ctrl disables flow control 4 10 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration SETTING PROTOCOL OPTIONS The Express NTU communicates with many different types of tele communication equipment including other Express NTU units ISDN terminal adapters BONDING mode 1 compatible inverse multiplex ers and PPP compatible bridges routers Communicating between such diverse types of equipment requires the use of various rate adaptation protocols to support various bit rates and DTE settings The Express NTU supports the following rate adaptation protocols 1 Clear Channel no rate adaption protocol 2 Point to point protocol PPP asynchronous to synchronous con version 3 BONDING mode 1 Bandwidth on Demand Interoperability Group 4 CCITT V 120 5 CCITT V 110 6 FALLBACK 7 Multilink PPP 8 PPP with compression The desired protocol may be selected with AT commands at the DTE port or from the Express NTU built in menu system With the built in menu system view these protocol choices by pre
37. A to the NT2 reference point as defined in the 1 411 Recommendation SPCS Stored Program Controlled Switch A digital switch that supports call control routing and supplementary services provision under soft ware control All ISDN switches are SPCSs synchronous 1 The condition occurring when two events happen in a specific time relationship with each other both under ontani a master clock 2 A method of data transmission requiring the transmission of timing pulses to keep the sender and receiver synchronized in their commu nication used to send blocks of information Synchronous data trans mission is used in high speed data circuits because there is less overhead than Ro transmission of characters which con tain two extra bits per character to effect timing T1 Also T 1 A digital transmission link with a capacity of 1 544 Mbps T1 uses two pairs of normal twisted wires T1 normally can handle 24 voice conversations with each conversation being digitized at 64 kbps With more advanced digital voice encoding techniques it can handle more voice channels T1 is a standard for demi transmission in North America T1C 3 152 Mbps aay of handling 48 voice conversations T1C is fur ther up the North American digital carrier hierarchy T2 6 312 Mbps Capable of handling 96 voice conversations T2 is four times the capacity of T1 T3 44 736 Mbps Commonly referred to as 45 Mbps Capable of handlin 672 voice conversations T3
38. BE 4 27 network interface 6 1 network options configuring 4 1 O operating protocols 1 3 options for leased and switched service 4 8 overview 1 1 P physical specifications 6 2 power requirements 6 2 power line LED flash green 5 2 flashes green 5 1 is off 5 1 off 5 1 PPP 4 11 4 12 and STAC compression 4 14 PPP with compression 4 11 61200200L1 20 Express NTU User Manual Index profiles dial 112K sync 4 17 dial 128K sync 4 18 dial 56K sync 4 16 dial 64K sync 4 17 dial bond asyn 4 20 dial V120 asyn 4 19 factory default 4 16 internet 128K 4 21 internet 64K 4 20 ldm 128K master 4 19 leased 128K 4 18 leased V120 4 22 remote 128K 4 22 remote 64K 4 21 protocol options BONDING mode 1 4 12 clear channel 4 11 fallback 4 13 multilink PPP 4 14 PPP 4 12 setting 4 11 V 110 4 13 V 120 4 13 protocols options 1 3 recommended 1 3 Q quick setup dial 112K sync 4 17 dial 128K sync 4 18 dial 56K sync 4 16 dial 64K sync 4 17 dial bond asyn 4 20 dial V120 asyn 4 19 factory default 4 16 internet 128K 4 21 internet 64K 4 20 ldm 128K master 4 19 leased 128K 4 18 Index 3 Index leased V120 4 22 remote 128K 4 22 remote 64K 4 21 R rate adaption 6 1 rear panel 1 2 3 3 redial last number 4 23 remote 128K 4 22 remote 64K 4 21 RJ 45 ISDN interface E 4 S self test 3 3 setting protocol options 4 11 slave master 4 6 software upgrading F 1 specifications 6 1 environmental 6 2 physical 6 2 SPID 4 3 S registers 4
39. Commands Configuring the Express NTU for AT commands enables in band di aling over the DTE interface using asynchronous AT commands AT commands can be used to set up the Express NTU as well as establish and end a call V 25 bis Configuring the Express NTU for V 25 bis enables in band dialing over the DTE interface using asynchronous or synchronous V 25 bis commands V 25 bis can be used to establish and end a call See the section Configuring the Express NTU for V 25 bis In band Dialing on page 4 24 for more information CONFIGURING THE EXPRESS NTU FOR LEASED DIGITAL SERVICE This section explains how to configure the Express NTU when using a 2B1Q Leased Digital service or a service that provides a permanent connection between end points Go to the Configuration menu as described in the section Configure the Express NTU on page 3 4 and press the number corresponding to Net work Options and Enter to display the Network Options Press the number corresponding to Leased Line and press Enter to select Leased Line Selecting Leased Line configures the unit for leased line service or ser vice that provides a permanent connection between end points such as limited distance modem LDM service Clock Mode Slave Master Press the number corresponding to Clock Mode and press Enter to display the Clock Mode options Slave and Master 4 6 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration By configuring the Express
40. Enter to display the Call Type options Speech Audio Data 56k and Data 64k Press the number corresponding to the desired op tion and then press Enter Service Profile ID SPID The SPID is a sequence of digits used to identify ISDN terminal equip ment to the ISDN switch The SPID is assigned by the local phone company when the ISDN line is installed and it usually looks similar to the phone number Obtain SPIDs from your telephone administra tor or local telephone representative The number of SPIDs required 0 1 or 2 depends on how your ISDN line is configured For instance a point to point line has no SPID Multipoint lines may have one or two SPIDs The Express NTU uses the presence of SPID 1 to determine if the line is multipoint If the line has only one SPID then it must be entered in SPID 1 Outside of North America the SPID format may not be used Example SPID1 25655512340101 SPID 2 25655543210101 PREFIX SUFFIX NOTE National ISDN 1 switches require the addition of a two digit terminal identifier TID at the end of the SPID Disconnect the network interface from the unit before initially NOTE entering or altering the SPIDs and LDNs 61200200L1 20 Express NTU User Manual 4 3 Chapter 4 Configuration Press the number corresponding to SPID 1 and press Enter to display the field for entering or changing SPID1 Type the SPID and press En ter Press the number corresponding to SPID 2 and press Enter to dis
41. Express NTU 128 kbps ISDN Service Unit Part Numbers 1200200L1 Document Number 61200200L1 20A June 1999 Trademarks Macintosh is a registered trademark of Apple Computer Incorporat ed Windows is a registered trademark of Microsoft Corporation 5ESS is a registered trademark of LUCENT DMS 100 is a trademark of Northern Telecom The Express NTU incorporates Synchronous Data Compression based on either IBM or hi fn proprietary intellectual property depending on the time of manufacture The following trademarks and copyrights are applicable Stacker LZS Compression Copyright c 1989 Carnegie Mellon University All rights reserved Redistribution and use in source and binary forms are permitted provid ed that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation advertising materials and other materials related to such distribution and use acknowledge that the software was developed by Carnegie Mellon University The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission This software is provided as is and without any express or implied warranties includ ing without limitation the implied warranties of merchantability and fit ness for a particular purpose in hi fn Electronics 5993 Avenida Encinas Carlsbad CA 901 Explorer Boulevard P O Box 140000 Huntsville AL 35814 4000
42. ID on page 4 3 for more information 3 8 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration Refer to Figure 3 3 on page 3 7 for an illustration of the VT 100 termi nal screens to clarify the information in this chapter AUTO DETECTION OF SPIDS SWITCH CON FIGURATION The switch type and SPID numbers can be detected automatically through the Express NTU interface by using the following steps 1 Type AT V to activate the VT 100 screen 2 Type Ctrl C to activate the Configuration menu 3 Enter the area code and ISDN phone numbers given by the ISDN service provider 4 Enter Enabled under the Auto Detect SPIDS switch selection CONFIGURING THE ADTRAN EXPRESS NTU FOR DIAL OPERATION It is important to note that some features in the Express NTU do not immediately take effect upon selection This prevents NOTE unintentional reconfiguration of the Express NTU during an active call Items such as Protocol and Call Type take effect only at the beginning of a new call Network Options To place ISDN modem calls the unit must be configured for Dial Line Perform the following steps to configure for Dial Line operation 61200200L1 20 Express NTU User Manual 4 1 Chapter 4 Configuration 1 Go to the Configuration screen as described above and in the section Configure the Express NTU on page 3 4 2 Press the number corresponding to Network Options and press Enter to view the Network Options choices Dial Lin
43. ID_MSG_UNSPEC Invalid message protocol error INVALID_NUMBER_FORMAT The dialed number has an invalid format L1 not up The network interface is not active L2 notup The data link layer interface is not active C 6 Express NTU User Manual 61200200L1 20 Appendix C Status Buffer Messages L3 not up The call control interface is not active L2 2 notup The data link layer interface for a second call BONDING is not ac tive L3 2 notup The call control layer interface for a second call BONDING is not ac tive LDN TOO LONG The local directory number entered has too many digits MAN DATORY_IE_LEN_ERR Mandatory information element length error MAN DATORY_IE_MISSING Mandatory information element missing Need 2 B chan The DTE bit rate requires the BONDING protocol Need 64K call The BONDING protocol requires the Express NTU to be configured for a 64kbps data call type Negotiation fail The BONDING negotiation has failed NETWORK BUSY The ISDN switch is busy and unable to process a call 61200200L1 20 Express NTU User M anual C 7 Appendix C Status Buffer Messages NETWORK_CONGESTION The phone network is currently congested NETWORK_OUT_OF_ORDER The phone network is out of order No 48K Support The Express NTU does not support 48 kbps TLINK Local DTE setup error NO_CIRCUIT_AVAILABLE The requested bearer channel is not available NONEXISTENT_MSG Nonexistent message was sent by the Ex
44. NT1 Network Termination 1 A unit that provides physical and electro magnetic termination of the U interface 2 wire transmission line Converts between layer 1 formats used at the U and T reference points and performs some maintenance functions NT2 Network Termination 2 A unit that provides switching and concen tration of subscriber lines at the S interface This unit performs the functions of a customer premises switch or multiplexer to multiplex B channel s and D channel s onto one physical path and to route calls to the appropriate B or D channel Glossary 4 Express NTU User Manual 61200200L1 20 Glossary phase jitter In telephony the measurement in degrees out of phase that an analog signal deviates from the reference phase of the main data carrying sig nal Often caused by alternating current components in a telecommu nications network PRA Primary Rate Access Connects high capacity CPE such as PBXs to the network In the U S this is composed of twenty three 64 kbps channels and one 64 kbps D channel Also known as primary rate in terface PRI point to point Describes a circuit connecting two points directly with no intermedi ate processing nodes or computers although switching facilities could exist A type of connection that links two logical entities i e phone line circuit regenerate To restore a signal to original shape Signals need to be restored be cause they become distorted and acquire
45. NTU for Master timing the Express NTU can provide clocking for both ends of the phone line This Master op tion is used at one end of a limited distance modem application where two Express NTU units are directly connected without the use of channel banks The far end unit should be configured for Slave and it derives its clocking from the Express NTU configured for Master timing If two Express NTU units are connected through channel banks both units should be configured for Slave mode The maximum mixed gauge cable length between two Express NTU units operating in leased line mode is 16 000 feet Channel Rate Press the number corresponding to Channel Rate and press Enter to display the Channel Rate options 64k and 128k When 64 kbps is se lected only one bearer channel B1 is used When 128 kbps is select ed both bearer channels B1 and B2 are used The section Recommended Operating Protocols on page 1 3 gives the data rates available Leased Configuration This option selects a D channel leased line configuration These con figurations specify types of network management that can be used to configure the unit from a leased line multiplexer located at the Central Office A typical application would have many Express NTUs con nected to a multiplexer via their ISDN U interfaces None Sets unit for no D channel configuration which is typical leased line mode NOTE No network management such as loopbacks and unit status
46. OCK Selects the clock mode in leased mode O Slave default 1 M aster Leased line only limited distance MODEM application only 52 SW ITCH TYPE Selects the network switch type for dial service 0 AT amp T 5ESS 1 N orthern Telecom DMS 100 2 N ational ISDN 1 N EC 53 CALL TYPE ll type Dial service only peech udio 6 Kbps data 4 Kbps data dt IL a S ASR S54 PRO TO CO L TYPE DlWNroo w u oo o adaption protocol type lear Channel 0 nN G Mode 1 V 120 11 Fallback 12 PPP async to sync conversion ul lt WO m m OUN m S55 DIALMO DE Selects dialing interface 1 AT commands 2 V 25 bis dialing S56 ECHO TONE Enables an echo tone which suppresses the echo cancellers in a voice circuit Can be used to trick the switch to allow sending data over a line optioned for voice ISDN service O N one 1 A nswer 2 0 riginate Both 61200200L1 20 Express NTU User M anual A 11 Appendix A AT Commands and S Registers 58 CALLSCREEN ING pee the Express NTU to screen incoming calls O Answer ay call 1 Answer only calls from numbers matching those stored in SN 0 through SN 9 CHAN N EL RATE Sets the available network bandwidth when the Express N TU is in leased mode 1 64 kbps 2 128 kbps SS60 SPID1 LOC SPID string location SS61 SPID2 LOC SPID string location SS62 LDN 1 LOC ISDN phon
47. Phone 256 963 8000 1999 ADTRAN Inc All rights reserved Printed in USA IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment basic safety precautions should always be followed to reduce the risk of fire electric shock and injury to persons The precautions are listed below 1 Do not use this product near water for example near a bath tub wash bowl kitchen sink or laundry tub in a wet basement or near a swimming pool 2 Avoid using a telephone other than a cordless type dur ing an electrical storm There may be a remote risk of elec tric shock from lightning 3 Do not use the telephone to report a gas leak in the vicinity of the leak 4 Use only the power cord power supply and or batteries indicated in the manual Do not dispose of batteries in a fire They may explode Check local codes for any special disposal instructions SAVE THESE INSTRUCTIONS iii ADTRAN YEAR 2000 Y2K READINESS DISCLOSURE ADTRAN has established a Year 2000 program to ensure that our products and operations will correctly function in the new millen nium ADTRAN warrants that all products meet Year 2000 specifica tions regardless or model or revision Information about ADTRAN s Year 2000 compliance program is available at the following Web Site www adtran com Product Matrix www adtran com Y2Kfax html Faxback Document Line 256 963 8200 Y2K plans and product certifications are listed in the matrix Y2K Proj
48. a Rates costes tee aaea otto a a e a aia Mag sidelobe 6 1 RateAdaption sss css0s dec iacadend p tana eeann e eia 6 1 Interoperability 0 cece eee 6 2 Switch Compatibility 0 00 6 2 B Channel Aggregation 0 00 cece cece eee 6 2 Display kisses eisc eed a sone cree hban ents cent eet ds 6 2 Environmental neos aens 0 00 KES a cece een EEA 6 2 Physical srs riese anera ee E eA EEEE NE ESEAS 6 2 P WwWet ees eee OUR a be es ree legs Pein 6 2 61200200L1 20 Express NTU User Manual XV Table of Contents Appendix A AT Commands and S Registers A 1 Appendix B Current Status Messages 0 0000s B 1 Appendix C Status Buffer Messages 0000eeeee C 1 Appendix D LEDs re rcr e 0 ccc cece cece e eee REAA D 1 Appendix E Connector Pinouts 0 0 c cece cence E 1 Appendix F Upgrading Software 0 cece ee eee F 1 ACTONYIMS 36ers soe oie Be plete sive die ee EEE neha nets Acronyms 1 Glossary ccc ccc cece eee eee e ee AE Glossary 1 Tid E E nevseras pete ayesanataln ee Index 1 xvi Express NTU User Manual 61200200L1 20 List of Figures Figure 1 1 ADTRAN Express NTU 00 0055 1 1 Figure 1 2 ADTRAN Express NTU Rear Panel 1 2 Figure 3 1 Dip Switches on Rear Panel 5 3 3 Figure 3 2 Connection Diagram 6 66 c cece eee 3 4 Figure 3 3 Terminal Interface Menu Screens 3 7 Figure 4 1 Expres
49. ack e Multilink PPP e PPP with compression e Clear Channel 61200200L1 20 Express NTU User Manual 6 1 Chapter 6 Specifications Interoperability e BONDING Mode 1 compatible Inverse Multiplexers e ISDN TAs e Automatic Fallback Rate Adaption Switch Compatibility e LUCENT 5ESS e NTI DMS 100 e National ISDN 1 e NEC B Channel Aggregation BONDING mode 1 protocol Display Available through terminal Environmental e Operating Temperature 0 to 40 C 32 to 104 F e Storage Temperature 20 to 70 C 4 to 158 F e Relative Humidity Up to 95 non condensing Physical e Dimensions e Weight 3 0 Ibs Power e 120 VAC 60 Hz 6 2 Express NTU User Manual 61200200L1 20 AppendixA AT Commands and S Registers While a call is not established the DTE port accepts AT commands During this time the CD signal is inactive When a call is established the port is used for data This data mode is indicated by the CD signal active The Express NTU can be configured and controlled with AT commands from a serial port similarly to analog modems To exit data mode and enter command mode the serial port must transmit a proper escape sequence to the Express NTU A specified time delay must occur between the last data character and the first es cape sequence character This is the guard time delay and it can be changed by writing a value to the S12 register The default value for the guard time is one second For a valid escape
50. amp F4 Configures unit for Dial 128k sync amp F5 Configures unit for Leased 128k amp F6 Configures unit for Ldm 128k Master amp F7 Configures unit for V120 async amp F8 Configures unit for Dial Bond async amp F9 Configures unit for Internet 64k amp F10 Configures unit for Internet 128k amp F11 Configures unit for Remote 64k amp F12 Configures unit for Remote 128k amp F13 Configures unit for Leased V120 N etwork O ptions amp LO Dial network amp L1 Leased network amp L2 Leased backed up by dial network A 4 Express NTU User Manual 61200200L1 20 Appendix A AT Commands and S Registers Command Function Calling N umber Identifiers amp N 0 Number 1 Read farend phone number 1 if service subscribed from telephone company amp N1 Number 2 Read farend phone number 2 if service subscribed from telephone company DTE Data Type Options amp Q0 DTE is async amp Q1 DTE is sync Clear To Send CTS Control Line O ptions amp RO Follows RTS amp R1 Forced CTS Data Set Ready DSR Control Line O ptions amp S0 DSR forced on amp S1 DSR if call up amp S2 DSR off if link down amp S3 DSR off if dial up DTE Connector Data Synchronous Data Clocking O ptions amp X0 Internal transmit clock amp X1 External transmit clock Accessing Stored numbers for Dialing O ptions amp Z0 Stored number 0 amp Z1 Stored number 1 amp
51. ange Bad B channel Bonding negotiation determined the delay in one of the Bearer chan nels was not correctable Bad call type Express NTU placed a call with an improper call type 61200200L1 20 Express NTU User M anual C 1 Appendix C Status Buffer Messages Bad DTE baud The DTE bit rate does not match a valid bit rate for the protocol select ed Bad DTE bps Bonding negotiation determined the chosen DTE bit rate is invalid BAD_INFO_ELEM Call control error Bad phone number Express NTU attempted to call an invalid phone number BaudRate Express NTU does not support the negotiated TLINK baud rate BEAR_CAP_NOT AVAIL The bearer channel requested by the user is not available Bearer mode Incoming call is not of a type the Express NTU can accept Bearer info mode Incoming call information transfer capability is not known BONDING XXX The amount of bytes of corrected delay between the B2 and B1 bearer channels XXX can range from 8000 to 8128 bytes BPS mismatch Bonding negotiation found a bit rate mismatch C 2 Express NTU User Manual 61200200L1 20 Appendix C Status Buffer Messages Break to AT cmd User issued a break in request Break ignored User issued an extra break in request BUSY The called number is busy Call not ringing User executed an answer command ATA but there was not a call present CALL REJ ECTED The call has been rejected by the ISDN network Can t go onl
52. ar end block errors NEBE and far end block errors FEBE occurring on the ISDN U interface A large count indicates problems with network equipment 61200200L1 20 Express NTU User Manual 4 27 Chapter 4 Configuration 4 28 Express NTU User Manual 61200200L1 20 Chapter5 Troubleshooting TROUBLESHOOTING GUIDELINES This section provides troubleshooting techniques to possible prob lems that may be encountered while operating the Express NTU If problems persist contact ADTRAN technical support for assistance see the back cover of this manual Power Line LED is Off Indicates a problem with the power to the unit Verify the power cord is connected to the Express NTU and is plugged into a known working 120 volt AC electrical outlet Power Line LED Flashes and B1 and B2 LEDs are Off This indicates a problem with the physical connection of the ISDN line from the local telephone company to the Express NTU 1 Verify the large end of the RJ 45 to RJ 11 telephone cable included with the Express NTU is connected to the ISDN connector on the rear panel of the Express NTU 2 Verify the small end of the RJ 45 to RJ 11 telephone cable is con nected to the ISDN telephone wall jack installed with Basic Rate ISDN 3 Contact the local telephone service provider 61200200L1 20 Express NTU User Manual 5 1 Chapter 5 Troubleshooting Power Line LED B1 and B2 LEDs Flash Green This indicates a configuration problem Verify the
53. be physically configured Figure 3 1 shows the location of these dip switches 61200200L1 20 Express NTU User Manual 3 1 Chapter 3 Installation and Operation The factory default position for all switches is down on during NOTE initial installation SW 1 Off Up 230 4 kbps On Down Autobaud speeds up to 115 2 kbps If dip switch 1 is set to the off position up the unit is set to operate at a DTE rate of 230 4 kbps A special serial COM port using a 16650 UART is required while in this mode If switch 1 is set to the on po sition down the unit will automatically adapt to the async DTE rate up to 115 2 kbps SW 2 O ff Up Factory Default previous settings not saved On Down Normal previous settings saved SW 3 Off Up A call is up and the Express NTU can O ffline receive AT commands On Down A callis up and the Express N TU can O nline pass data SW 4 Off Up Leased Line mode setup DNA 128K On Down Normal operation 3 2 Express NTU User Manual 61200200L1 20 Chapter 3 Installation and Operation Eh 12VDC onf sessssss a C POWER RS232 530 v35 l ISDN a ON T 2 E eee a Figure 3 1 Dip Switches on Rear Panel Connect the Express NTU Follow these steps in connecting the Express NTU see Figure 3 2 on page 3 4 for a connection diagram
54. ccess LDN 1 for DTE 1 Nl Access LDN 2 for DTE 2 A 6 Express NTU User Manual 61200200L1 20 Appendix A AT Commands and S Registers Command Function ISDN Switch Type O ptions _S0 5ESS _S1 DMS 100 _S2 N ational ISDN 1 ISDN U interface O perational Mode O ptions _X0 ISU timing slaves to network N T mode _X1 ISU is U interface timing master LT mode Z Resets unit Data Flow Control O ptions Q0 N o flow control Q1 Software flow control XO N XO FF Q2 CTS only Q3 Hardware flow control RTS CTS factory default Q4 Software from DCE only S REGISTER LIST NOTE Defaults appear in bold type in the third column S0 AUTO ANSWER Determines how the Express NTU answers an incoming call 0 ie Express NTU does not answer call 1 Enable Express NTU answers all calls 2 Dump all calls S2 ESCAPE Determines which key or character in ASCII CHARACTER code defines the escape command The stan dard escape character isa plus sign ASCII value of 43 decimal To change the charac ter set set S2 to the desired ASCII value Range 0 to 127 s3 END OFLUNE Determines which key or character in CHARACTER ASCII code ends a command line The stan dard end of line characteris the carriage return ASCII value of 13 decimal Range 0 to 127 61200200L1 20 Express NTU User M anual A 7 Appendix A AT Commands and S Regist
55. cted at the end of negotiation before deciding the async BO N DING call has fai seas it may be necessa to allow for slower cal ed When dialing over ry to lengthen this timer routing 0 to 255 Default 50 43 BOND TXDEQ The number of seconds both endpoints attempt to equalize the network delay between the bearer channels before deciding the Async BONDING call has failed 0 to 255 Default 50 S44 BOND TAN ULL The number of seconds the answering endpoint attempts to detect the Async BONDING nego tiation pattern from the originating endpoint be fore aborting to clear channel mode Itmay be necessary to shorten this timer if the DTE equip ment connected to the Express NTU also has timer constraints for completing non BO N D ING parameter negotiation 0 to 255 Default 10 A 10 Express NTU User Manual 61200200L1 20 Appendix A AT Commands and S Registers S45 BOND TCID The number of seconds both endpoints attempt to negotiate agreeable values for bearer chan nels and channel capacities before deciding the async BON DING call has failed 0 to 255 Default 5 S46 V25 MODE Selects the type of V 25 bis dialing used O Asynchronous V 25 1 HDLC V 25 2 BISYN C V 25 3 HDLC with flags V 25 S50 LINE MODE Selects the operating mode of the Express NTU O Dial service switched service 1 Leased service nonswitched service S51 UNE CL
56. ctioning ISDN equipment with a U interface on the line With the Express NTU connected to the line and pow ered up talk to your service provider s repair group and tell them you have an ISDN basic rate line that appears physically okay but is unable to register its SPIDs Ask them to check the line translation ensure the line supports dynamic TEI allocation and verify the SPIDs Tell them that you have an NT1 and termi nal adapter device connected to the line Express NTU User Manual 5 7 Chapter 5 Troubleshooting IF YOU ARE UNABLE TO CONNECT CALLS See Table 5 1 for corrective actions if you cannot connect calls Table 5 1 Troubleshooting Calls Condition Corrective Action The Loop LED remains on but calls cannot be placed Most likely a problem exists in the software setup translation at the CO switch or the network setup in the Express NTU Local voice calls can be transmitted but data calls to the same exchange cannot The line is probably not set up to support data calls Local data calls go through but long distance calls do not Ensure the far end is working If not already doing so place the call explicitly specifying the prefix of the long distance service for example 10288 for AT amp T If this does not work then the problem is probably the long distance service provider Another possibility is that the local service provider is not providing long distance access Da
57. d Signature Title Date Transcribed and sworn to before me This day of 199 Notary Public My commission expires xi xii Table of Contents Chapter 1 Understanding ISDN and the Express NTU The Adtran Express NTU 00 000000 000000000 Recommended Operating Protocols 0 0 2 20005 Chapter 2 Ordering ISDN 0 cece cece ee eee eens Chapter 3 Installation and Operation 64 Unpack and Inspect 0 0 e eee Install the Express NTU 6 6 6 Verify Switch Settings 0000 eee Connect the Express NTU 2 coe eee Configure the Express NTU 2 cece Auto Detection of SPIDs and Switch Type Chapter 4 Configuration 0 ccc cece cece eens Auto Detection of SPIDs Switch Configuration Configuring the ADTRAN Express NTU for Dial Operation Network Options Acta eb nian ads Bete ta eta tees ATECAICOdC hele st Srl Mion eh A nd hg TI a hs HAs Ge A 5 ISDN Phone Number Local Directory Number Auto Detect SPIDs Switch 0 0 ccc eee ene Switch Protocol oid jc eeck oe coe en BO ae ie BAA Eel acer ees te Call Typer e ASME Cech UN SN Sh ok OE A E ob ali Service Profile ID SPID 2 0 eee eee eee Atto ANSWER op ea VERERGER ee Rtas ea ass Red AIE AMO ws Disabled mere se Oh cess Ge ence Glee ead oe Pe te Pe cart lion Enabled 1 200553 a a oe eet Bates ae
58. d to end digital connections The network supports diverse services through integrated access arrangements and defines a limited set of standard multipurpose interfaces for equipment vendors net work providers and customers Interworking with a public switched telephone network is retained jitter The slight movement of a transmission signal in time or phase that can introduce errors and loss of SC anon for high speed synchro nous communications See phase jitter LATA Local Access and Transport Area One of 161 local telephone serving areas in the United States generally encompassing the largest stan dard statistical metropolitan areas Subdivisions established as a re sult of the AT amp T divestiture that now distinguish local from long distance service Circuits with both end points within the LATA in traLATA are generally the sole responsibility of the local telephone company while circuits that cross outside the LATA interLATA are passed on to an interexchange carrier loopback A diagnostic procedure where data is sent to the device being tested and the output of the device is fed directly back to its input looped around and the returning data is checked against that which was sent message The layer 3 information that is passed between the CPE and SPCS for signalling multidrop A communications arrangement where multiple devices share a com mon transmission channel though only one may transmit at a time multi
59. e the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol DTE mode DTE connector bit rate DTE flow control Transmit data clock Leased 128K ISDN dial line Enabled 64 kbps data BONDING mode 1 Synchronous 128 kbps None Normal When the Express NTU is configured for Leased 128K service the fol lowing parameters are automatically preset Service type N etwork clock source Channel rate Data protocol DTE mode DTE connector bit rate DTE flow control Transmit clock 4 18 Express NTU User Manual Leased line Slave 128K Clear channel Synchronous 128 kbps N one Normal 61200200L1 20 Ldm 128K Master Chapter 4 Configuration When the Express NTU is configured for a point to point application such as a limited distance modem arrangement the Ldm 128 Master option automatically presets the following parameters Service type N etwork clock source Channel rate Data protocol DTE mode DTE connector bit rate DTE flow control Transmit clock Dial V120 asyn Leased line M aster 128K Clear channel Synchronous 128 kbps None Normal When the Express NTU is configured for Dial V120 asyn service the following parameters are automatically preset Service type Automatic answering ISDN call type Data Protocol DTE mode DTE connector bit rate DTR option DTE flow control 61200200L1 20 ISDN dial line Enabled 64 kbps data
60. e Profiles menu Upon connection at 64k call type BONDING V 120 and PPP async sync are attempted If connection is not made at 64k the Express NTU attempts another call at 56k call type If connection is made at 56k V 120 and PPP async sync are at tempted Multilink Point to Point Protocol This protocol allows the Express NTU to dial a second number estab lishing a second point to point link Once the second PPP is estab lished multilink PPP is performed over both B channels The phone number for the second call should be placed in stored number 1 SN1 If no number is stored in SN1 the same phone number dialed to estab lish the first link is used for the second link PPP and STAC Compression When set up to do compression the Express NTU will negotiate the compression central protocol CCP with the network PPP peer If STAC compression is successfully negotiated with the peer data packets from the DTE are compressed before being sent out the net work Likewise compressed packets from the network are decom pressed before being transmitted out the DTE 4 14 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration CONFIGURING THE EXPRESS NTU USING PROFILES QUICK SETUP To configure the DTE Options quickly and easily use the Profiles menu to automatically set up the most common DTE configurations Press the number corresponding to Profiles and press Enter to display the Profiles options Default Dial V120 as
61. e and Leased Line 3 Press the number corresponding to Dial Line and press Enter to select Dial Line Area Code Enter the area code when using the AutoSPID switch option ISDN Phone Number Local Directory Number This option allows the entry of 0 1 or 2 LDNs The LDN is used when placing or receiving calls The LDN is the local phone number as signed to the line LDN 1 5551212 LDN 2 5551212 Auto Detect SPIDs Switch This can be set to Active or Disabled If set to Active the SPID and switch type for your ISDN switch are automatically detected If set to Disabled no automatic detection takes place Switch Protocol Find out what kind of ISDN switch your local CO is using by asking your telephone administrator or your telephone company representa tive The Express NTU can be configured for a Northern Telecom DMS 100 LUCENT 5ESS CO switch a switch conforming to the Na tional ISDN 1 standard usually an LUCENT 5ESS NTI DMS 100 or Siemens EWSD or an NEC Switch Press the number corresponding to Switch Protocol and press Enter to display the Switch Protocol options LUCENT 5ESS DMS 100 4 2 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration and National ISDN1 Press the number corresponding to the desired option and press Enter again Call Type The Call type can be configured four different ways depending on the type of service used Press the number corresponding to Call Type and press
62. e number string location SS63 LDN 2 LOC ISDN phone number string location S65 AUTO SPID Sets the AutoSpid determination feature O Disable default 1 Enable SS67 AREA CODE Area code location S70 DTE M O DE Selects asynchronous or synchronous mode on the DTE connector 1 Asynchronous 2 Synchronous S71 DTE RATE Selects the DTE connector bit rate 2 oo coo 200 How ny WW gp NNNNQNRPRRRRrOMW OB WN pa O 9 CO MUTE nou S72 DATA BITS Foy S73 DTE PARITY Selects the number of asynchronous parity bits N one 1 0 dd 2 Even Express NTU User Manual 61200200L1 20 Appendix A AT Commands and S Registers S74 DTE STOP Selects the number of asynchronous parity bits O N one 1 0 dd 2 Even S75 DTE FLO W a asynchronous flow control N one 1 X0 N O FF from DTE controls DCE 2 X0 N O FF from DCE controls DTE 3 Hardware 12 Software S76 DTE CLOCK Selects DTE connector transmit clock timing source O N ormal Express N TU supplies timing 1 External DTE supplies timing SS77 REMOTE NUMERIC Numeric password string for remote configura PASSW O RD tion The following are the string locations for stored numbers 0 9 SS80 ISNO LOC Stored number 0 string SS81 ISN1LOC Stored number 1 string Used for second num ber dialed in a multilink connection SS82 SN2 LOC Stored number
63. ect Line 256 963 2200 E mail year 2000 adtran com FCC regulations require that the following information be pro vided in this manual 1 Service Type ISDN This equipment complies with Part 68 of the FCC rules On the bottom of the equipment housing is a label that shows the FCC registration number and Ringer Equiva lence Number REN for this equipment If requested provide this information to the telephone company If this equipment causes harm to the telephone network the telephone company may temporarily discontinue ser vice If possible advance notification is given otherwise notification is given as soon as possible The telephone company will advise the customer of the right to file a complaint with the FCC The telephone company may make changes in its facilities equipment operations or procedures that could affect the proper operation of this equipment advance notification and the opportunity to maintain uninterrupted service is given If experiencing difficulty with this equipment please con tact ADTRAN for repair and warranty information The telephone company may require this equipment to be dis connected from the network until the problem is corrected or it is certain the equipment is not malfunctioning This unit contains no user serviceable parts An FCC compliant telephone cord with a modular plug is provided with this equipment In addition an FCC com pliant cable appropriate for the dial backu
64. ection Verify Switch Settings on page 3 1 for more information NOTE Factory default erases all stored phone numbers SPIDs and Ns Dial 56K sync When the Express NTU is configured for Dial 56K sync service the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol DTE mode DTE connector bit rate DTE flow control Transmit data clock 4 16 Express NTU User Manual ISDN dial line Enabled 56 kbps data Clear channel Synchronous 56 kbps None N ormal 61200200L1 20 Dial 64K sync Chapter 4 Configuration When the Express NTU is configured for Dial 64K sync service the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol DTE mode DTE connector bit rate DTE flow control Transmit data clock Dial 112K sync ISDN dial line Enabled 64 kbps data Clear channel Synchronous 64 kbps None Normal When the Express NTU is configured for Dial 112K sync service the following parameters are automatically preset Service type Automatic answering ISDN call type Data protocol DTE mode DTE connector bit rate DTE flow control Transmit data clock 61200200L1 20 ISDN dial line Enabled 56 kbps data BONDING mode 1 Synchronous 112 kbps none Normal Express NTU User Manual 4 17 Chapter 4 Configuration Dial 128K sync When the Express NTU is configured for Dial 128K sync servic
65. ed Routers raise DTR when bandwidth on their dedicated line is exceeded In high traffic times this allows the Express NTU to dial out over the ISDN for an extra 128 kbps of bandwidth on demand The LED indicators located on the front of the Express NTU monitor data flow and display the status of the DTE interface and the network interface leads as described in LEDs on page D 1 The primary interface for offline configuration is EIA 232 but once the connection is established the selected interface takes precedence 1 2 Express NTU User Manual 61200200L1 20 Chapter 1 Understanding ISDN and the Express NTU RECOMMENDED OPERATING PROTOCOLS The Express NTU supports a wide range of operating modes Many combinations of circuit type protocol and data rate may be selected However only the combinations shown in Table 1 1 on page 1 4 are recommended Table 1 1 shows that a given data rate may be achieved by more than one protocol rate adaption selection The table is organized so that selections with the least transport delay are closer to the top of the ta ble for any given circuit type Therefore choose a protocol and rate closer to the top of the protocol rate list for a given circuit type 61200200L1 20 Express NTU User Manual 1 3 Chapter 1 Understanding ISDN and the Express NTU Table 1 1 Recommended Operating Modes Call Type Protocol Sync Rates Supported bps Async BONDING 56000 64000 DIAL64K 56000 4800 19200
66. elecommunication service that provides the capability for the transmission of information be tween user to network interfaces Bearer services defined for ISDN are circuit mode and packet mode BONDING mode 1 Protocol Industry standard B channel aggregation protocol Developed by the Bandwidth on Demand Interoperability Group CCITT Consultative Committee for International Telephony and Telegraphy A body of the International Telegraph Union HTU which prepares recommendations commonly referred to as international standards to resolve technical telegraph and telephone problems central office CO In telephony the phone company switching facility or center usually a Class 5 end office at which subscribers local loops terminate Han dles a specific geographic area identified by the first three digits of the local telephone number Usually the facilities of the local BOC clear channel A channel in which all the 64 kbps are used for transmission To achieve this bit robbing signalling must be eliminated common channel interoffice signalling CCIS A signalling system developed for use between stored program switching systems All of the signalling information for a group of trunks is transmitted over a dedicated high speed data link rather than on a trunk CCIS reduces call setup time compared to individual trunk signalling conditioning Extra cost options that users may apply to leased or dedicated voice a 3002 type Telc
67. er 2 is inactive To activate the unit a setup message must be sent or received DISCONNECTING The current phone call is being disconnected hung up Getting TEI 1 The ISU is receiving its first TEI from the network 61200200L1 20 Express NTU User M anual B 1 Appendix B Current Status Messages Getting TEI 2 The ISU is receiving its second TEI from the network ISDN 1 Ready The ISU is connected to an ISDN 1 compliant switch and is ready to place receive calls Link down The network interface is not active Link In Sync The ISU has successfully connected to the network but is waiting for the switch to issue the ACT bit LPBK DTE The DTE connector is looped back in the DTE direction LPBK Netw The Express NTU is in a customer initiated loopback LPBK Protcl Net The Express NTU has been commanded to perform a loopback in the network direction after letting the incoming data pass through the current protocol NEC Ready The Express NTU is connected to an NEC switch and is ready to place receive calls NET EOC LOOPBACK The Express NTU has been commanded to perform an ISDN loop back toward the network B 2 Express NTU User Manual 61200200L1 20 Appendix B Current Status Messages NET REM LOOPBACK The Express NTU is performing a V 54 or DDS latching loopback to ward the network Ready The unit is ready to make or accept a call Register SPID 1 The Express NTU is registering its first SPID wit
68. ers S4 UN E FEED Determines which key or character in CHARACTER ASCII code advances the cursor to the next line after ending a command line or after an Ex press N TU message The standard character is the line feed ASCII value of 10 decimal Range 0 to 127 S5 BACK SPACE Determines which key moves the cursor back CHARACTER one space to erase a character The standard character is the backspace ASCII value of 8 decimal Range 0 to 127 S7 CONNECT Determines how long the Express N TU waits for TIM E an outgoing call to be answered 15 15 seconds 30 30 seconds 60 1 minute 120 2 minutes 240 4 minutes 12 ESCAPE TIME Determines the delay required immediately be fore and after entering the escape command for the Express NTU to recognize and execute the command Range 0 to 127 Default 50 14 MISC BITS Miscellaneous bits bit 8 is most significant bit Bit 2 1 Enables on screen echo of AT com mands Bit 2 0 Disables on screen echo of AT com mands Bit3 0 Enables AT responses from theExpress NTU Bit 3 1 Disables AT responses from the Ex press NTU Bit4 1 Enables AT responses to be displayed in text form Bit4 0 Enables AT responses to be displayed in numeric form Bit 7 1 Disable PPP ACCM spoofing Bit 7 0 Enable PPP ACCM spoofing Bit 8 1 Ring indicator uses cadence Bit 8 0 Ring indicator remains on 15 ASYNC BONDING Asynchronous BONDING method O ADTRAN revisi
69. f the problem is the second phone number or the quantity of phone numbers C If possible try another piece of functioning ISDN equipment with a U interface on the line D With the Express NTU connected to the line and pow ered up talk to your service provider s repair group and tell them you have an ISDN basic rate line that appears physically okay but is unable to register its SPID s Ask them to check the line translation en sure the line supports dynamic TEI allocation and verify the SPIDs Tell them that you have an NT1 and terminal adapter device connected to the line If the Loop Status in the Express NTU Status menu continuously reads Register SPID 2 the Express NTU has completely initial ized the first phone number but is unable to establish logical layer 3 for the second phone number The problem is in one or both of the following places e The Express NTU software setup e The telephone service provider s software setup To isolate the problem perform the following procedure A Ensure that the Express NTU is set up with the correct SPID and LDN For example Express NTU User Manual 61200200L1 20 61200200L1 20 Chapter 5 Troubleshooting 4 SPID1 25655512340101 5 SPID2 25655543210101 6 LDN 1 5551234 7 LDN 2 5554321 B Try swapping SPID1 with SPID2 and LDN1 with LDN2 Determine if the problem is the second phone number or the quantity of phone numbers If possible try another piece of fun
70. following informa tion is correct e Switch Type e Service Profile Identifiers SPIDs e ISDN Phone Numbers Auto detect Switch SPIDs Remains at Link Down The Link Down condition persisting for longer than 15 minutes indi cates a problem with the ISDN line provided from the telephone com pany The ISDN physical layer device has not been able to synchronize to the network Ensure the RJ 45 to RJ 11 telephone cable is correctly installed between the Express NTU and the ISDN wall jack and that the Express NTU is powered on If the wall jack does not have ISDN installed on the two middle pins tip ring the Express NTU will never synchronize to the telephone switching equipment Call the local telephone company and have them check the ISDN line for correct operation Difficulty with 230 4 kbps Operation If the Express NTU does not work when the DTE rate is set to 230 4 kbps inside Windows verify the following 1 Verify that switch 1 on the back of the Express NTU is set to off up 2 Verify that a high speed serial card with a 16650 UART is being used and the software drivers to support the extended baud rate tables are installed When the Express NTU powers up it performs an internal self test This takes about 10 seconds At the end of the test the PWR LED should remain on If self test fails ensure that the Express NTU is re ceiving power 5 2 Express NTU User Manual 61200200L1 20 Chapter 5 Troubleshooting IF THE
71. for the correct switch type B Make sure the Express NTU is set up with the correct SPID and LDN For example 4 SPID1 25655512340101 5 SPID2 25655543210101 6 LDN 1 5551234 7 LDN 2 5554321 C If possible try another piece of functioning ISDN equipment with a U interface on the line D With the Express NTU connected to the line and pow ered up talk to your service provider s repair group and tell them you have an ISDN basic rate line that appears physically okay but is unable to register its SPID s Ask them to check the line translation en sure the line supports dynamic TEI allocation and verify the SPIDs Tell them that you have an NT1 and terminal adapter device connected to the line 61200200L1 20 Express NTU User Manual 5 5 Chapter 5 Troubleshooting 5 6 If the Loop Status in the Express NTU Status menu continuously reads Getting TEI 2 the Express NTU has completely initialized the first phone number but is unable to establish logical layer 2 for the second phone number The problem is in one or both of the following places e The Express NTU software setup e The telephone service provider s software setup To isolate the problem perform the following procedure A Ensure that the Express NTU is set up with the correct SPID and LDN For example 4 SPID1 25655512340101 5 SPID2 25655543210101 6 LDN 1 5551234 7 LDN 2 5554321 B Try swapping SPID1 with SPID2 and LDN1 with LDN2 Determine i
72. h the network Register SPID 2 The Express NTU is registering its second SPID with the network RINGING The phone number just dialed is ringing XXXX nnnNn A rate adaption is running at the bit rate specified by nnnn xxxxx Quitting A rate adaption protocol is turning off xxxxx Ready A rate adaption protocol is ready xxxxxX Setup A rate adaption protocol is setting up xxxxx can be any of the following BONDING Bandwidth on Demand Industry Users Group protocol 61200200L1 20 Express NTU User M anual B 3 Appendix B Current Status Messages CLEAR CHAN No rate adaption protocol allows use of maximum bandwidth FALLBACK FALLBACK rate adaption protocol V110 V 110 rate adaption protocol V120 V 120 rate adaption protocol B 4 Express NTU User Manual 61200200L1 20 Appendix C Status Buffer Messages Messages shown entirely in capital letters are generated by the ISDN network Messages with lower case letters are generated by the Ex press NTU Answer 1 2 The ISU answered a call on either the first or second channel The call ing phone number is displayed if available ACCESS INFO_DISCARDED The network was unable to deliver access information to the far end Back to online Express NTU went back on line Bad async BPS The BONDING protocol determined that the selected asynchronous bit rate is not supported Bad AT bit field User issued an AT command with an argument that was out of r
73. ies or 2 Use AT configuration commands similar to those used by high speed modems Both of these configuration methods require an asynchronous DTE terminal PC etc to be connected to the EIA 232 530 port labeled RS232 530 located on the rear panel of the unit 4 Once the NTU is configured if a different DTE connector is desired disconnect the EIA 232 and connect the desired DTE cable AC Outlet R 45 to R 11 Telephone Cable hh ISDN Telephone Express NTU Wall Jack Figure 3 2 Connection Diagram CONFIGURE THE EXPRESS NTU When connected to an asynchronous VT 100 terminal or VT 100 termi nal emulator use the built in Express NTU menu system for configu ration To enter into the menus type AT V and press Enter The Configuration screen menu displays first Figure 3 3 on page 3 7 3 4 Express NTU User Manual 61200200L1 20 Chapter 3 Installation and Operation shows each menu as it appears on the VT 100 terminal To go to a par ticular menu simply press the hot keys for that menu The main branches of the menu and their hot keys are STATUS Ctrl V TEST Ctrl T CONFIG Ctrl C DIAL Ctrl D NOTE Ensure that the communications package is configured to pass these control sequences through to the Express NTU The status buffer can be displayed at any time after entering the menu structure As stated earlier pressing Ctrl V displays the Express NTU
74. ine Express NTU cannot go back on line User issued an unknown AT command CAP_NOT IMPLEMENTED The network or far end does not support the bearer capability request ed CHAN_DOES NOT EXIST The bearer channel requested is not present CHAN_NOT_IMPLEMENTED The bearer channel requested has not been implemented CHANNEL UNACCEPTABLE The channel requested has not been subscribed 61200200L1 20 Express NTU User M anual C3 Appendix C Status Buffer Messages CID gt 0 rcvd Received an incoming call from a third party during negotiations with a far end BONDING unit on the use of the second Bearer channel DEST NOT ISDN The number called is not ISDN warning only DEST OUT_OF_ORDER The called number is out of order Dial1 2 The Express NTU placed a call on either the first or second channel The number called is displayed following the message Discon1 2 The call on either the first or second channel was disconnected from the network The far end phone number is displayed if available Disconnect Req Far end unit disconnected during BONDING negotiation DPUMP END RCVD Indication of a hang up or disconnect occurring during BONDING Does not indicate an error condition has occurred DTE must be SYNC For the protocol chosen the DTE connector must be optioned as syn chronous DTE not set V25 The DTE equipment is not optioned for the same bit rate as the Ex press NTU for V 25 bis dialing C 4 Expres
75. ing only SReg Set rror Local DTE invalid S register setting Sync BPS lt 56K The synchronous bit rate selected is too slow for the BONDING pro tocol Synch Mismatch Both ends Bad Synchronization TAINIT expired Bonding timer TAINIT expired TAN ULL expired Bonding timer TANULL expired non BONDING equipment attempt ed to call into the Express NTU while optioned for BONDING TEMPO RARY_FAILURE The network has temporarily failed try the call again TIMER_EXPIRY Call control error C 10 Express NTU User Manual 61200200L1 20 Appendix C Status Buffer Messages TXADDO1 expired Bonding timer TXADD01 expired probably making a long distance call to a foreign country adjust timer value to correct TXFA1 expired Bonding timer TXFA1 expired other vendor s BONDING equipment did not operate properly TX FLOW ERROR Flow control needs to be enabled TXFA2 expired Bonding timer TXFA1 expired other vendors BONDING equipment did not operate properly TXINIT expired Bonding timer TXINIT expired called non BONDING equipment UNASSIGNED NUMBER The phone number dialed does not exist Unknown AT amp cmd User issued an unknown AT command UN SPECIFIED_CAUSE Received a cause message from the network that is not understood Unsupported baud The Express NTU does not support the negotiated baud rate USER_BUSY The dialed number is busy 61200200L1 20 Express NTU User M anual C 11 Append
76. ix C Status Buffer Messages V120 timeout The far end unit is not set up for V 120 V120 connected The V 120 rate adaption successfully connected to the far end unit WRONG MESSAGE Call control error WRONG MSG FOR STATE Call control error C 12 Express NTU User Manual 61200200L1 20 Appendix D LEDS LEDs The Express NTU front panel contains five LEDs associated with the DTE port and the ISDN interface as shown in Figure D 1 and de scribed in Table D 1 ADRAN Express NTU Figure D 1 Front Panel LEDs Table D 1 Express NTU LEDs LED Color Description Bl orB2 Slow Green Flash Attempting SPID registration Fast Green Flash Attempting TEI registration off Ready No data traffic Solid Green B Channel passing data in use Solid Amber Loopback protocol test one or both channels Amber Flash Remote test originate PW R Line G reen On Solid Link Established Calls can be placed off No Power Flashing Link is not established Calls cannot be placed TD G reen Transmit Data TxD RD G reen Received Data RxD 61200200L1 20 Express NTU User M anual D 1 Appendix D LEDs D 2 Express NTU User Manual 61200200L1 20 AppendixE Connector Pinouts Table E 1 ElA 232 Interface d 5 Z 9 3 D ie Description I Shield VO Shield for cable Z TD l Transmitted Data
77. l Type take effect only at the beginning of a new call Express NTU Configuration Menu 1 Network Options Dial Line 16 DTR Options Ignore DTR 2 Area Code 205 17 Connector Type V 35 3 ISDN Phone Number 1 9224358 18 Flow Control Hardware Flow 4 ISDN Phone Number 2 9224358 19 Protocol PPP Asyn Syne 5 Auto Detect SPIDs Switch Disabled 20 PPP Mode PPP 6 Switch Protocol AT amp T SESS 21 Profiles 7 Call Type Data 64K 22 Configure Remote Unit 8 SPID 1 23 Remote Num Password 9 SPID 2 10 Auto Answer Enabled 11 Call Screening Answer Any 12 Dial options AT commands 13 DTE options Synchronous 14 Bit Rate 64000 15 Transmit Clock Normal Select Enter SELECT Esc NO CHANGE Ctl V STATUS Ctl T TEST Ctl C CONFIG Ctl D DIAL Ctl xX EXIT Configuration Menu Express NTU Status Menu UNIT LOOP STATUS STATUS BUFFER Call Type Data 64K 1 EMPTY DTE Rate 64000 2 EMPTY Self Test Passed 3 EMPTY Software Rev a 99 4 EMPTY Checksum ec73 5 EMPTY Serial Number a 6 EMPTY Loop Status Link Down 7 EMPTY Num Dialed No Call 8 EMPTY RTS On 9 EMPTY cTS On 10 EMPTY DCD off 11 EMPTY DTR On 12 EMPTY 13 EMPTY 14 EMPTY 15 EMPTY 16 EMPTY 17 EMPTY 18 EMPTY 19 EMPTY 20 EMPTY_ Ctl V STATUS Ctl T TEST Ctl c CONFIG Ctl D DIAL Ctl X EXIT Status Menu Figure 3 3 continued on next page 3 6 Express NTU User Man
78. line of demarcation between customer owned equipment and the public network V 32 9 6 kbps 2 wire duplex modem standard video conferencing The real time usually two way transmission of digitized video imag es between two or more locations Video conferencing requires a wideband transmission facility Transmitted images may be freeze frame where television screen is repainted every few seconds to every 20 seconds or full motion Bandwidth requirements for two way vid eo conferencing range from 6 MHz for analog full motion full color commercial grade TV to 56 kbps for digitally encoded freeze frame to 1 544 kbps for very good quality full color full motion TV wideband Generally a communications channel offering a transmission band width greater than a voice grade channel Data transmission speeds on wideband facilities are typically in excess of 9 6 kbps and often at rates such as 56 kbps and 1 544 Mbps X 25 A packet data transfer protocol for the B and D Channels Defines the interface between data terminal equipment and data circuit terminat ing Spa for terminals operating in the packet mode and con nected to public data networks by dedicated circuits Glossary 8 Express NTU User Manual 61200200L1 20 Index Numerics 112K sync 4 17 128K sync 4 18 230 4 operation difficulty with 5 2 56K sync 4 16 64K sync 4 17 A answer call 4 23 area code entering 4 2 AT commands 4 6 4 24 A 1 dialing a call A 3 using A 2
79. mmands A 3 dialing options VT 100 terminal 4 23 answer call 4 23 dial number 4 23 dial stored number 4 23 hang up line 4 23 redial last number 4 23 store review number 4 23 dialing selections 6 1 dip switches 3 3 display 6 2 DTE interface 6 1 options 4 8 bit rate 4 9 DTR options 4 10 E EIA 232 interface E 1 EIA 530 interface E 2 environmental specifications 6 2 Ericsson local 4 8 Ericsson remote 4 8 61200200L1 20 Express NTU User Manual Express NTU configuration 3 8 overview 1 1 rear panel 1 2 F factory default 4 16 fallback 4 11 4 13 features 6 1 flow control async 4 10 front panel LEDs D 1 G getting started 3 3 H hang up line 4 23 I if the express NTU does not read ready 5 3 if you are unable to connect calls 5 8 inspecting 3 1 installation 3 1 internet 128K 4 21 internet 64K 4 20 interoperability 6 2 ISDN ordering 2 1 ordering codes capability R 2 1 capability S 2 1 generic data I 2 1 generic data M 2 1 ISDN phone number 4 2 L ldm 128K master 4 19 LDN 4 2 leased 128K 4 18 leased configuration 4 7 leased digital service configuring for 4 6 Index 2 leased line channel rate 4 7 clock mode 4 6 leased V120 4 22 LEDs D 1 front panel D 1 loopback protocol 4 27 Ipbk proto timeout 1min 4 27 M menu navigation 3 4 menu screens terminal interface configuration menu 3 6 dial menu 3 7 test menu 3 7 MPPP 4 14 multilink point to point protocol 4 14 multilink PPP 4 11 N NEBE FE
80. mode AT S Displays Status Buffer AT S1 Displays Link Status AT V Configuration M enu D Dial Precedes the telephone access number ATD5551212 DS Dial a stored number DS3 H Hang up Disconnects the current call 10 Identify unit Commands the unit to display model number 11 Identify software Commands the unit to display software version O On ine Commands the unit to go back on line S S Register SS S String register Z Reset Resets the AT command processor amp W Save Save current configuration to EEPROM U Resets ISDN interface 61200200L1 20 Express NTU User M anual A3 Appendix A AT Commands and S Registers Command Function IS Dumps status buffer contents to the DTE port Break in Break in AT command processor during an active call The break in key is defined in 2 Carrier Detect C D Control Line O ptions amp C0 CD forced on amp C1 CD normal amp C2 CD off with local disconnect LO CD amp C3 CD off with link down Data Terminal Ready DTR Control Line O ptions amp D0 Ignore DTR amp D1 DTR off forces command amp D2 Idle when off DTR off forces idle O n allows auto answer Generic Unit Configurations amp F0 Default amp F1 Configures unit for Dial 56k sync amp F2 Configures unit for Dial 64k sync amp F3 Configures unit for Dial 112k sync
81. ns The voice capability is not necessary for operation of the Express NTU however it is useful in troubleshooting a misconfigured ISDN line In some ar eas ISDN tariffs may warrant the use of ordering codes with less fea tures For example in a particular region there may be additional monthly expense associated with having voice service on each B chan nel If you have a data only application Capability R previously Ge neric Data I may be more cost effective Each ISDN line provides 112 128 kbps of service For more information regarding ordering ISDN see the ADTRAN document Ordering ISDN Service User Guide part number 60000 015 8 or contact the telephone company for alternative line configura tions The Ordering ISDN Service User Guide is available on the ADT RAN home page at http www adtran com under the Information Desk or by calling ADTRAN 61200200L1 20 Express NTU User Manual 2 1 Chapter 2 Ordering ISDN 2 2 Express NTU User Manual 61200200L1 20 Chapter3 Installation and Operation UNPACK AND INSPECT After unpacking the unit immediately inspect it for possible shipping damage If damage is discovered file a claim immediately with the shipping carrier then contact ADTRAN Customer and Product Ser vice department see the inside back cover of this manual INSTALL THE EXPRESS NTU Verify Switch Settings Dip switches 1 2 3 and 4 located on the rear panel of the Express NTU allow certain settings to
82. o data circuits where line impedance is carefull alanced Allows for higher quality or speed data transmission Al lows improved line performance in frequency response and delay dis tortion 61200200L1 20 Express NTU User Manual Glossary 1 Glossary D channel The ISDN channel that carries signalling information to control the call setup teardown or invocation of supplementary services The D Channel mey also be used to provide packet mode data service DDS Dataphone Digital Service AT amp T private line service for transmitting data over a digital system The digital transmission system transmits electrical signals directly instead of translating the signals into tone of varied frequencies as with traditional analog transmission systems Digital techniques provide more efficient use of transmission facili ties resulting in lower error rates and costs than analog systems digital hub Designated office where DDS channels are interconnected and where synchronous network timing testing access and additional service features are provided digital loopback Technique for testing the digital processing circuitry of a communica tion device May be initiated locally or remotely via a telecommuni cation circuit Device being tested will echo back a received test message after first decoding and then encoding it The results are compared with the original message four wire circuits Telephone lines using two wires for transmit
83. on 0 default 1 Multivendor option 22 MSG BITS M cone message bits bit 8 is most signif icant bit Bit5 Bit6 Bit7 1 Allows connect mes sage with baud rate Bit5 Bit6 Bit7 0 Connectmessage with out baud rate A 8 Express NTU User Manual 61200200L1 20 Appendix A AT Commands and S Registers S24 V120 LLC Enables disables V120 lower layer compati bility LLC O Enabled 1 Disabled 25 DTR DETECT TIME Determines time in hundredths of a second that must elapse before the Express N TU recog nizes a change in DTR Range 0 to 255 Default 5 S26 VOICE DEFAULT Determines the speed atwhich an audio call is received O 56k speech audio to DTE port 1 64k speech audio to DTE port S27 PPP MO DE Value determines whether or not PPP will be a single link or multilink connection O Single link operation default 1 M ultilink operation 2 Use compression 30 DTE CTS Controls the operation of the DTE connector CTS line O Follows RTS 1 Force CTS 31 DTE RTS Controls operation of the RTS line O 1 ms delay 17 18 ms delay 32 DTE DSR Controls the operation of the Data Set Ready signal on the DTE connectors O Force DSR on always 1 DSR off OOS Test 2 DSR off Link Down 33 DTE CD Controls the operation of the Carrier Detectline on the DTE connectors O Force CD on always fone is active during a call Normal O pera tion
84. p option or dered is provided with this equipment This equipment is designed to be connected to the telephone network or pre mises wiring using an FCC compatible modular jack which is Part 68 compliant The following information may be required when apply ing to the local telephone company for leased line facilities Digital Facility Service Order Network Jacks Interface Code Code 021S5 6 0F R 49C FEDERAL COMMUNICATIONS COMMISSION RADIO FRE QUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commer cial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio or TV reception The user is encouraged to try to correct the interfer ence by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio TV technician for help 444 Change or modifications to this unit not expressly ap W ARNING proved by ADTRAN will void
85. play the field for entering or changing SPID2 Type the SPID and press En ter NOTE See Auto Detection of SPIDs Switch Configuration on page 4 1 for instructions on enabling the Auto Detect SPIDs Switch feature Auto Answer Press the number corresponding to Auto Answer and press Enter to view the Auto Answer options Disabled Enabled and Dump All Calls Press the number corresponding to the desired options then press Enter Disabled When Disabled is selected the Express NTU will not answer the call An AT answer command ATA must be issued to the Express NTU before it accepts the incoming call The ringing call can be dumped us ing the Hang up line command Enabled When Enabled is selected the Express NTU will accept an incoming data call on the primary phone number SPID1 LDN1 If that call is a BONDING call then another incoming call is accepted on the sec ondary phone number SPID2 LDN2 Dump all calls When Dump all calls is selected the Express NTU will not accept any incoming calls keeping the line clear for outgoing calls 4 4 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration Call Screening The option 1 Answer Any default allows the Express NTU to an swer all incoming calls The option 2 Answer if SNO 9 allows the Express NTU to answer only calls originating from phone numbers stored in the DIAL menu as stored numbers SNO through SN9 When Call Screening is set to answer any
86. plexing The combining of oe data channels onto a single transmission medium Any process through which a circuit normally dedicated to a single user can be shared by multiple users Typically user data streams are interleaved on a bit or byte basis time division or sepa rated by different carrier frequencies frequency division 61200200L1 20 Express NTU User Manual Glossary 3 Glossary multipoint circuit A circuit consisting of three or more stations connected directly elec trically narrowband ISDN A collective term for BRA basic rate access and PRA primary rate ac cess at speeds up to 1 544 Mbps NCTE Network Channel Terminating Equipment Equipment considered necessary for terminating a telephone circuit or facility at the customer premise on the regulated side of the demarcation FCC decisions have established that most NCTE is CPE and may therefore be supplied by third party vendors NEXT Near End Crosstalk Unwanted energy transferred from one circuit to an adjoining circuit Occurs at the end of the transmission link where the signal source is located The absorbed energy is usually propagated in the direction opposite to the absorbing channel s normal current flow Caused by high frequency or unbalanced signals and insufficient shielding non ISDN line Any connection from a CPE to a SPCS that is not served by D Channel signalling non ISDN trunk Any trunk not served by either SS7 or D Channel signalling
87. press NTU No Sreg number Attempt to access an S register without specifying a specific S register example ATS 1 No Sreg value Attempt to change an S register without specifying a value example ATS2 NO_ROUTE The phone network was unable to find a route to the destination num ber NO_USER_ RESPONDING The dialed number is not responding C 8 Express NTU User Manual 61200200L1 20 Appendix C Status Buffer Messages NORMAL CLEARING The network is disconnecting the current call NOT end2end ISDN The path that the call was routed over is not ISDN from end to end warning only NUMBER_CHANGED The number dialed has been changed OUTGOING CALL BARRED The network will not allow the outgoing call to be placed PROTOCOL ERROR Call control error REQ CHANNEL NOT_AVAIL The channel type requested is currently not available Remote not ISU Bonding negotiation determined the far end unit is not another ISU asynchronous rates can only be supported between two ADTRAN ISUs RESP_TO_STAT_ENQ Response to status inquiry Ring 1 2 An incoming call on either the first or second channel entered the Ring state The calling phone number is displayed if available 61200200L1 20 Express NTU User M anual C9 Appendix C Status Buffer Messages S cmd not or User did not use proper syntax SERVICE_NOT_AVAIL The requested service is not available SOURCE NOT ISDN The incoming calling party is not ISDN warn
88. runs on fiber optic and is typically ealled FT3 TA Terminal Adaptor A DCE that connects to the ISDN S Interface and enables non ISDN terminal equipment to communicate over the ISDN line TE1 Terminal Equipment Type 1 ISDN compatible terminals Glossary 6 Express NTU User Manual 61200200L1 20 Glossary TE2 Terminal Equipment Type 2 Non ISDN terminal equipment linked at the RS 232 RS 449 or V 35 interfaces tandem The connection of networks or circuits in series The connection of the output of one circuit to the input of another T interface T Reference point Performs the same function as the S Interface but uses an NT1 rather than an NT2 twisted pair Two wires twisted around each other to reduce induction interfer ence from one wire to the other Several sets of twisted pair wires may be enclosed in a single cable Twisted pair is the normal cabling from a central office to your home or office or from your PBX to your office phone Twisted pair wiring comes in various thicknesses As a general rule the thicker the cable is the better the quality of the con versation and the longer the cable can be and still get acceptable con versation quality However the thicker it is the more it costs 2B D The Basic Rate Interface BRI in ISDN A single ISDN circuit divided into two 64 kbps digital channels for voice or data and one 16 kbps channel for low speed data up to 9600 baud and signalling 2B D is carried on
89. ry another piece of functioning ISDN equipment with a U interface on the ISDN line D Talk to your service provider and ensure you have an 61200200L1 20 Express NTU User Manual 5 3 Chapter 5 Troubleshooting 5 4 ISDN Basic Rate U Interface with 2B1Q line coding wrong options are an S or T interface or AMI line cod ing Ensure that your phone line is connected to the actual telephone line U interface provided by your tele phone company Make sure your line is not connect ed through another piece of equipment such as an NT1 in a wiring closet somewhere Make sure nothing else is bridged across the ISDN line pair With a minimum of extra wiring try connecting to the ISDN line pair at the point where service provid er s wiring ends With the Express NTU connected to the ISDN line and powered up talk to your service provider s re pair group and inform them that your ISDN basic rate line has a physical layer 1 problem Ask them to check the line Tell them that you have an NT1 like device a the end of the line If the Loop Status in the Express NTU Status menu continuously reads Getting TEI 1 then the Express NTU is physically con nected to your local telephone service provider but is unable to establish logical layer 2 The problem is in one or more of places listed below e The Express NTU software setup e The telephone service provider s software setup e Hardware configuration if the
90. s NTU Loopback Points 4 27 Figure D 1 Front Panel LEDs 0 0000000 D 1 61200200L1 20 Express NTU User Manual xvii List of Figures xviii Express NTU User Manual 61200200L1 20 List of Tables Table 1 1 Table 5 1 Table D 1 Table E 1 Table E 2 Table E 3 Table E 4 Recommended Operating Modes 1 4 Troubleshooting Calls 008 5 8 Express NTU LEDs 6 00 cece eee eee D 1 EJA 232 Interface 0 0 0 0 E 1 EIA 530 Interface 0 0 0 ccc cc eee E 2 V5 Nterface Asses eet he Bees aR E 3 RJ 45 ISDN Interface 0 00022 eee eee E 4 61200200L1 20 Express NTU User Manual xix List of Tables XX Express NTU User Manual 61200200L1 20 Chapter1 Understanding ISDN and the Express NTU THE ADTRAN EXPRESS NTU The Express NTU see Figure 1 1 is a stand alone device that connects data terminal equipment DTE to the ISDN network or to a leased line The Express NTU includes built in network termination and ter minal adapter functionality It operates as a high speed synchronous ISDN modem using one or both bearer B channels up to 128 kbps utilizing Multilink PPP or BONDING protocol It also functions as a high speed asynchronous ISDN modem using one or both B channels up to 230 4 kbps flow control using Multilink PPP or BONDING protocol WHR I v NS A w WES Fig
91. s NTU User Manual 61200200L1 20 Appendix C Status Buffer Messages DTR not up Express NTU tried to place a call in a dialing mode that requires DTR to be in an active state but it is not Dump call Express NTU could not accept an incoming call because it was already involved ina call Dump1 2 An incoming call on either the first or second channel was discarded by the ISU The calling number is displayed if available FACILITY_REJ ECTED A facility requested cannot be provided by the network FACILITY_NOT_SUBSCRIBED The channel type requested has not been subscribed FALLBACK ERROR Attempt to fallback to normal mode failed FBW disconnect BONDING negotiation has failed due to a disconnect on a B Channel FlowCt mismatch Bonding negotiation determined a flow control mismatch Flow Cul required Bonding negotiation determined that flow control needs to be op tioned on 61200200L1 20 Express NTU User M anual c5 Appendix C Status Buffer Messages Hangup1 2 The call on either the first or second channel was disconnected by the Express NTU The far end phone number is also displayed INCOMMING_CALL BARRED The network will not allow an incoming call INCOMPATIBLE_DEST The called number cannot accept the type of call that has been placed INTRWORKING _UNSPEC A message was sent by a far end network that was not understood INVALID_CALL REF Call control error INVALID_ELEM_CONTENTS Call control error INVAL
92. s not seen in the configure request pack et from the network the Express NTU will spoof or add it to the packet BONDING Mode 1 The BONDING mode 1 protocol allows the Express NTU to commu nicate at bit rates in excess of 64 kbps to a maximum of 128 kbps BONDING provides high speed communication between Express NTU units ISDN TE TAs and inverse multiplexing equipment sup porting the BONDING protocol The protocol allows use of both syn chronous and asynchronous bit rates When the Express NTU uses the BONDING mode 1 protocol it must make two separate ISDN phone calls to seize control of both ISDN bearer channels The protocol cor rects any delays existing between the two bearer channels and pre sents a single high speed data channel to the DTE For successful high speed operation both the near and far end DCE need to be con figured to use the BONDING mode 1 protocol The BONDING mode 1 protocol negotiation phase has numerous timers to allow transmis sion delays due to satellite hops international calls etc The timers may be adjusted if necessary by entering into the BONDING mode 1 submenu 4 12 Express NTU User Manual 61200200L1 20 Chapter 4 Configuration V 120 The V 120 protocol is a CCITT compliant rate adaption method which provides DTE service between the Express NTU and other V 120 com pliant devices at rates less than the 64 kbps ISDN Bearer channel rate V 120 supports synchronous and asynchronous DTE rates See
93. ss the number cor responding to Protocol and pressing Enter A description of proto cols follows See the section Recommended Operating Protocols on page 1 3 for more information on recommended modes of operation Clear Channel Clear channel provides the entire bearer channel to the DTE without regard to data format or protocol This provides a rate adaptation at or near the ISDN circuit rate The primary usage for Clear Channel in the dial line mode is for 56 kbps and 64 kbps synchronous It is useful 61200200L1 20 Express NTU User Manual 4 11 Chapter 4 Configuration when the DTE performs its own internal synchronous protocol rate adaptation or the Express NTU is calling a 4 wire Switched 56 DSU In the leased line mode Clear Channel can provide synchronous bit rates of 56 kbps 64 kbps 112 kbps and 128 kbps Point to Point Protocol PPP Async to Sync PPP provides a standard method for transporting multi protocol dat agrams over point to point links The ADTRAN PPP async sync pro tocol allows the Express NTU and a PC or Macintosh running PPP software to communicate with a PPP compatible bridge or router The PPP async sync protocol complies with Internet Engineering Task Force IETF RFC 1662 The asynchronous control character map ACCM option is scanned during the negotiation When the ACCM option is seen in a configure ACK link control packet it is adopted by the Express NTU In addi tion when the ACCM option i
94. t to Point Protocol 0 0 eee eee 4 14 PPP and STAC Compression 0 0 000s 4 14 Configuring the Express NTU Using profiles Quick Setup 4 15 Default factory 0 00 e eee 4 16 Dial 56K SYNC i306 ics Sie OH Phe Ree Hee OG EE 4 16 Dial GAK SYNE xP eon ecco catia chalk ses eto ies 4 17 Dial TI2K Syne s c06s pease eee es LA eee eee 4 17 Dial 128K SYNC aaas paaie ania chiens oa Sia Sint daca eet 4 18 Leased 28K roer ocelot hs pes Ae bs Bote bee 4 18 Ldm 128K Master 0 ccc cece cc eee eee 4 19 Dial V120 a8 yi s cin ceed riro diese ene eet a rantika 4 19 Dial Bond asyn ss orras aai eee eee eee 4 20 Internet 64 Ke 2 eich eos oh oY oho Ne ee SS Bch ok Sat 4 20 MOteto a hid Pars ed Rc ed BRON ASS 4 20 Int mmet 28K sresrer gars cannot has aesvenwhoaadasena bs 4 21 Remote GAK lran manai a tiss ole bles h a BER ES ew BS eed 4 21 Remote 128K 0208 6 0 helio Wi oA He SSA ee oe 4 22 Tee as d Vil 20 2 sccse a ante eesti elena edna ees 4 22 VT 100 Terminal Dialing Options 08 4 23 Hang up lihe ssn ays ndie ated ola eager tied Sis 328 JoeB is 4 23 Dial number 5c Sas oe eA iene SER OE Sa AS 4 23 Redial last number 0000 c cece cece eens 4 23 Answer call 05 6 eotd ots sane inaia toe dane sneks 4 23 xiv Express NTU User Manual 61200200L1 20 Table of Contents Dial stored number 0 0 eee 4 23 Store Review number 0 000 c cece eee eee 4 23 AT Commands and S
95. ta calls can be made but BON DED data calls cannot There may be a problem in the software setup translation at the CO switch or the network setup in the Express NTU Another possibility is that the data circuits provided are not good enough to support the BON DING negotiation process If the line has two phone numbers make sure the second SPID and LDN are entered correctly in SPID2 and LDN 2 in the Express NTU Check with the local service provider to ensure that the line supports two data calls The Express N TU status log buffer shows the sequence of events that occurred You need to know which piece of equipment first caused the BONDING process to terminate The status logs from both ends may be necessary to determine this 5 8 Express NTU User Manual 61200200L1 20 Chapter6 Specifications SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incor porated in the Express NTU Network Interface RJ 45 for ISDN Basic Rate U Interface or RJ 45 for leased 2B1Q service DTE Interface EIA 232 EIA 530 V 35 Dialing Selections e In band dialing V 25 bis or AT commands e Manual or automatic stored number dialing e DTR assertion Data Rates e Network 64 kbps one B channel 128 kbps two B channels e DTE 300 bps to 115 2 kbps asynchronous 2400 bps to 128 kbps synchronous Rate Adaption e CCITT V 120 e CCITT V 110 e BONDING Mode 1 e PPP async sync e Fallb
96. ting and two wires for re ceiving offering much higher quality than a 2 wire circuit All long distance circuits are 4 wire Almost all local phone lines and analog phones are 2 wire group 4 A high speed 56 kbps facsimile protocol specific to ISDN hub 1 Communications center 2 major routing station for connecting channels 3 DDS connecting center in band signalling Signalling made up of tones which pass within the voice frequency band and are carried along the same circuit as the talk path being es tablished by the signals Virtually all signalling us for service dialing disconnect etc in the U S is in band signalling Most of that signalling is MF multi frequency dialing The more modern form of signalling is out of band interexchange carrier Any carrier registered with the FCC authorized to carry customer transmissions between LATAs interstate or if approved by a state public utility commission intrastate Includes carriers such as AT amp T Communications Satellite Business Systems GTE Telenet GTE Sprint and MCI Glossary 2 Express NTU User Manual 61200200L1 20 Glossary information element The name for the data fields within an ISDN layer 3 message interworking Communication between two types of networks or end equipment This may or may not involve a difference in signalling or protocol el ements supported ISDN Integrated Services Digital Network A network architecture that en ables en
97. ual 61200200L1 20 1 2 3 4 5 5 Chapter 3 Installation and Operation Express NTU Test Menu Test Remote Loopback Network Loopback Protocol Lpbk Proto Timeout 1 min Loopback Disable V54 Accepted NEBE FEBE Select Enter SELECT Esc NO CHANGE Ctl STATUS Ctl T TEST Ctl C CONFIG Ctl D DIAL Ctl X EXIT Test Menu 1 2 3 4 5 6 Express NTU Dial Menu Hang Up Line Dial Number Redial Last Answer Call Dial Stored Store Review Select _ Enter SELECT Esc NO CHANGE Ctl V STATUS Ctl T TEST Ctl C CONFIG Ctl D DIAL Ctl xX EXIT Dial Menu Figure 3 3 Terminal Interface Menu Screens 61200200L1 20 Express NTU User Manual 3 7 Chapter 3 Installation and Operation Auto Detection of SPIDs and Switch Type Auto detection of SPIDs and Switch Type see Auto Detection of SPIDs Switch Configuration on page 4 1 greatly reduces the likelihood of time consuming problems occurring during installation of the Ex press NTU It evaluates common SPID formats based on the area code and phone numbers and reports success after placing a test call After installation is complete the Express NTU resets the ISDN line for a clean start Therefore the PWR LINE LED may not be on solid indicating link up for a few more seconds In the few cases where the procedure does not succeed the nonstand ard SPIDs may be entered Refer to the section Service Profile ID SP
98. ure 1 1 ADTRAN Express NTU If problems occur with the Express NTU contact ADTRAN NOT Technical Support for assistance The telephone number is on the inside back cover of this manual The Express NTU transmits data over EIA 232 EIA 530 and V 35 in terfaces The Express NTU may be viewed as an ISDN dial modem 61200200L1 20 Express NTU User Manual 1 1 Chapter 1 Understanding ISDN and the Express NTU The unit has one RJ 45 jack labeled ISDN on the rear panel for net work connection see Figure 1 2 Figure 1 2 ADTRAN Express NTU Rear Panel The Express NTU also supports a leased digital connection that allows data to be transferred at up to 128 kbps over a 2 wire facility using the same RJ 45 jack This type of service is a permanent connection be tween end points and is sometimes referred to as a leased connection or a limited distance modem connection Dialing from the Express NTU is accomplished in a variety of ways e Using a VT 100 terminal connected to the rear panel EIA 232 port See Configure the Express NTU on page 3 4 e Over the DTE interface using the AT command set See AT Commands and S Registers on page A 1 e V 25 bis in band used in applications such as LAN WAN bridging See Configuring the Express NTU for V 25 bis In band Dialing on page 4 24 e With DTR enabl
99. y No Connection Data Set Ready return Data Terminal Ready return External Transmit Clock NC N 7A No Connection T Input O Output N A NotApplcable amp S A D KI co Pa O s X DX EERERE g a E 2 Express NTU User Manual 61200200L1 20 Appendix E Connector Pinouts Table E 3 V 35 Interface a 3 Z 9 a D e Description Shield for cable Signal Ground Request To Send Clear To Send Data Set Ready Carrier Detect Data Terminal Ready Ring Indicator Send Data o V35 Receive Data TKTT TTS Send Data return Receive Data return oos 6 0 6 0 0 0 0 8 6 SOOCO666 X o oo0o7o o7o 7o 7o77 oooJ7s N D lt X gg lt a aa aN H ee D H s TC A External Transmit C lock RC A Receive Clock TCB External Transmit Clock return RC B Receive Clock return STA Send Timing STB Send Timing return NC NTA No Connection MIN NC N7A No Connection BB NC N7A No Connection CC NC NTA No Connection DD NC N7A No Connection EE NC N7A No Connection FF NC N7A No Connection HH NC N7A No Connection JJ NC N7A No Connection KK NC N7A No Connection IL NC N7A No Connection MM NC N7A No Connection NN NC N7A No Connection in J ring indicator is needed for most video conferencing applications l Input
100. yn Dial 56k Sync Dial Bond asyn Dial 64k Sync Internet 64k Dial 112k Sync Internet 128k Dial 128k Sync Remote 64k Leased 128k Remote 128k Ldm 128k Master Leased V120 For fine tuning a particular application and DTE settings see the sec tion Options for both Leased and Switched ISDN Service on page 4 8 This section provides detailed step by step processes for configuring the DTE Options Most Internet service providers supporting ISDN also support PPP protocol If connecting to an Internet service provider using one B channel select Internet 64K which sets the protocol to PPP If ar rangements have been made with the Internet service provider to use two B channels select Internet 128K which uses multilink PPP proto col Loading a factory profile has no effect on any SPID s ISDN Phone Number s or Switch Type settings already configured The settings that are altered when applying a profile are shown on the following pages 61200200L1 20 Express NTU User Manual 4 15 Chapter 4 Configuration Default factory This option restores the Express NTU to the following factory default setup Service type Automatic answering ISDN call type Call screening Data protocol DTE mode DTR option DTE flow control ISDN dial line Enabled Data 64k Answer Any Clear Channel Synchronous Ignore DTR None The Express NTU can be reset to the factory default settings by setting switch 2 to the off up position See the s

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