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DSU III AR DC User Manual

1. 5 3 Network Type Leone e 5 4 Clock Source e eed OE REE 5 5 Chapter 6 Configuring DTE Options pions istos tuas e tor tet aes 6 1 DTE Rates Weed 6 1 ConniectOr Ap LSEQGu 4A de Gea bee 6 4 6 5 DSU III ARdc User Manual 61200270L1 20 Table of Contents DTE Command 6 6 Transmit CLOCK pcs le Pee ES 6 7 CS OPtlOns Lares Eee du me e muc Pat 6 8 AntrStreame Liie ens4wldec Rt ES Lene Late AREA EA Ad NES 6 10 CD Op tons no ges entere tentis hs ipe redet 6 12 TROPHOMNS ec erm er bir UE BSE OA E ex rS Ea rs 6 13 SR Options do etc er ged yt ed e EE tok 6 14 Chapter7 Configuring Test Options lest Options i ioa esa pe bee tae DAS Ea e eate 7 1 Test Titeout a vom Aou rt ee ete ER t cereus 7 1 Remote Digital 7 2 EIA Local Loopback 2 7 3 EIA Remote Loopback 7 3 Chapter 8 Configuring Dial Options Dial eoe dut cete Decl e eA ete E 8 1 Phorie N tnb6et x exec Rath ae he 8 1 AUTO ANSWER o Torten De E EE E
2. 2 3 Configuration ies ets e UE as e uU 2 5 Configuration Methods 2 6 AT Commands Lu dq D De eei eia 2 6 V 25 bis Commands eser RA SENS 2 7 SDLC Option pr dere thie xp Uni qot bones esce 2 7 Character 2 7 Command Structure 2 8 25 cepe te bed asi shines PANIS UN 2 8 Character Format ER OPE SER 2 8 Command Structure 2 8 Asynchronous 2 8 Character 2 8 Command Structure 2 8 Command Descriptions 2 8 Syntax and Possible Responses 2 10 CIC Connect Incoming Call 2 10 CNL Configuration 2 10 CNR Configuration 2 10 Switched 56 Operation 2 11 CRN Call Request with 2 11 CRS Call Request Using Stored Number 2 11 61200270L1 20 DSU III ARdc User Manual xi Table of Contents DIC Disregard Incoming 2 11 PRN Program N
3. Table 11 4 DTE With Test Pattern Commands Front AT Description Panel Command 1 2047 PATTERN TO amp T8 Standard 2047 random data pattern 2 511 PATTERN _T1 amp T8 Standard 511 random data pattern 3 STRESS PTRN 1 T2 amp T8 Stress pattern with alternating high and low ones densities Repeated pattern of 100 octets 1111 1111 followed by 100 octets 0000 0000 4 STRESS PTRN 2 _T3 amp T8 Stress pattern with alternating medium and low ones densities Repeated pattern of 100 octets 0111 1110 followed by 100 octets 0000 0000 5 STRESS PTRN 3 _T4 amp T8 Stress pattern with medium ones density Continuous series of octets 0011 0010 6 STRESS PTRN 4 _T5 amp T8_ Stress pattern with low ones density Continuous series of octets 0100 0000 DTE amp Loop LL Test Description The DTE amp LooP test splits the DSU III ARdc into two separate DTE and loop interface sections and then loops the receive data of each interface back to its respective transmit data The DTE amp Loop test provides a bidi rectional loopback at the DSU CSU Figure 11 5 on page 11 11 illustrates the loopback points and the signal paths for this test 11 10 DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting LOCAL DTE DSU CSU DTE Loopback Local 4 wire Loopback Figure 11 5 DTE amp Loop Test Test Purpose The DTE amp Loop test is used for the following purposes e Verify integrity
4. eti RE 12 1 DSU Operational Status 12 2 DATA MODE ee ER Se ERAS 12 2 UNEILINSGEEST xe 12 2 DTE COMMAND MODE 12 2 a AN OL Ue acne 12 2 INCOMING CATE AG M e rd 12 2 DIALING uri genet rs SNR oe a 12 2 DDS Network Status 12 2 xiv DSU ARdc User Manual 61200270L1 20 Table of Contents LOOPIS NORMAL eese a 12 2 OPEN LOOP riae eL Ee RETA RE Ue Eee 12 3 NO RX SIGNAT dca Pa tenia dicta ve edere gat ate 12 3 CHECK TELCO LINE Regem memes 12 3 OOS OOF FROM NET 12 3 NO FRAME SYNC eeu Eye ce ete dre rs 12 3 IESLEROM TEEGCO eue ee ue e dele He edt 12 3 RATE 12 3 ANSWERING CALL 4 4 2 12 3 NO WINK FROM CO 22222222 2 12 4 CALL DISCONNECT 12 4 Network Rate asad ee dte er aede a 12 4 DIERate ZMode 2 552 5 4 iE ases 12 4 DTE Control Leads and Status 12 4 Appendix AT 4 A 1 Appendix B Default Configuration 1 B 1 Appendix C DSU to Modem
5. RS cs TD RD CD ALM TST NZ Co NP C2 SHIFT DELETE QUICK 00 0 0 0 C CE Figure 3 2 DSU Ill ARdc Front View LCD Window Displays menu items and messages in 2 lines by 16 characters Enter Selects active menu items To activate a menu item press the number of the item When the menu item is flashing press Enter to select it 3 4 DSU ARdc User Manual 61200270L1 20 Chapter 3 Operation Up and Down Arrows The up and down arrows scroll through menu items available in the cur rent menu Submenu items appear two at a time ina circular or wrapping fashion When the submenu items are scrolled they continuously appear from beginning to end in a forward down arrow or reverse up arrow pattern Cancel Pressing the Cancel key stops the current activity and returns to the previ ous menu Repeat until the desired menu level is reached Numeric Keypad The numeric keypad contains the numbers 0 through 9 and alpha charac ters A through F which are used to activate menu items or enter parame ters Shift Enter alpha characters by first pressing and releasing the Shift key and then pressing the desired character To activate a menu item designated by an alpha character rather than a number display the menu item using the up and down arrows press and release Shift and then press the letter The active item flashes Press Enter to select the item Quick During most operations the Quick key return
6. Rx J Rx LEP Rx Ez Figure 11 1 Normal Operation Before Initiating Loopback Test CAUT All diagnostic tests disrupt data flow 61200270L1 20 DSU ARdc User Manual 11 1 Chapter 11 Testing and Troubleshooting Initiating a Test Initiate tests using the following procedure 1 Select TEST from the MAIN menu by pressing 2 and then pressing Enter See Figure 11 2 2 Specify LOCAL or REMOTE by selecting the corresponding number fol lowed by Enter 3 Use the up and down arrows to view test options Select a test from the available options by pressing the corresponding number followed by Enter 5 The example in Figure 11 2 shows the menu path for initiating a local DTE and loop test 1 DTE amp LOOP LL 2 LOOP ONLY RT 3 DTE ONLY 4 DTE WITH TP 5 TEST PATTERN 6 SELF TEST 2 TEST 2 REMOTE UNIT 1zLOCAL UNIT Figure 11 2 Initiating a Test Once a test is initiated Please Wait is displayed briefly followed by the status screen Test Status Display The Test Status display appears automatically during a test The Test Sta tus display is similar to the status screen described in Status Selection on page 12 1 with additional prompts for the type of test and the number of errors for tests with a test pattern 11 2 DSU ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubl
7. 1 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 Equivalence Number REN for this equipment If requested provide this information to the tele phone company If this equipment causes harm to the telephone network the tele phone company may temporarily discontinue service If possible advance notification is given otherwise notification is given as soon as possible The telephone company will advise the custom er of the right to file a complaint with the FCC The telephone company may make changes in its facilities equip ment operations or procedures that could affect the proper oper ation of this equipment advance notification and the opportunity to maintain uninterrupted service is given If experiencing difficulty with this equipment please contact ADTRAN for repair and warranty information The telephone company may require this equipment to be disconnected from the network until the problem is corrected or it is certain the equip ment is not malfunctioning This unit contains no user serviceable parts An FCC compliant telephone cord with a modular plug is provid ed with this equipment This equipment is designed to be connect ed to the telephone network or premises wiring using an FCC compatible modular jack which is Part 68 compliant The following information may be required when applying to the local tele
8. 6 RC RD e gt TD CHU lt lt RD For Multi drop requirement DCD RTS RTS DCD Figure C 1 DSU to Modem Interconnect 61200270L1 20 DSU ARdc User Manual C 1 Appendix C DSU to Modem Interconnect C 2 DSU III ARdc User Manual 61200270L1 20 Appendix D EIA 232 Connector 56 AND 64 KBPS APPLICATION The 232 connector shown in Figure D 1 may be used for 56 and 64 kbps applications Using the external clock option and this cable should eliminate data errors caused by excessive delays in the DTE transmit clock receiver and transmit data driver When creating this cable at the DTE in terface EIA 232 connector tie transmit clock lead TC to external transmit ETC as shown DTE No connection 61200270L1 20 DSU 1 ARdc Pin 15 TC Pin 24 ETC EIA 232 CONNECTOR Figure D 1 EIA 232 Connector DSU III ARdc User Manual D 1 Appendix D EIA 232 Connector D 2 DSU III ARdc User Manual 61200270L1 20 AppedxE Specifications Summary SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incorporat ed in the DSU III ARdc Operating Modes Dedicated DDS point to point multipoint Switched 56 4 wire Data Rates Dedicated mode service rate 2 4 4 8 9 6 19 2 38 4 56 and 64 kbps Switched mode service rate 56 kbps DTE Rates DTE rate
9. 7 AN TI STREAM 8 CD OPTIONS 9 TR OPTIONS SR OPTIONS 3 TEST O PTION S 5 MANUALCOMMAND Figure 6 5 Selecting DTE Command Option When the unit is in CMD OPTION mode idle SW56 mode forced with TR option or from escape sequence in AT mode with AT COMMAND SET or V 25 SYNC selected the DTE Win format is independent of the DATA FORMAT option However if V 25 BSC ASYNC is selected the unit will use V 25 BISYNC BSC commands for synchronous data format or V 25 ASYNC commands for asynchronous data format 6 6 DSU III ARdc User Manual 61200270L1 20 Chapter 6 Configuring DTE Options Transmit Clock The TRANSMIT CLOCK option is used to select the source of the clock used to transfer data from the DTE to the DSU III ARdc Figure 6 6 shows the menu path used to set the TRANSMIT CLOCK option 1 N ETW ORK OPT 3 DATA FORMAT 4 CMD OPTION 1 NORMAL 2 EXTERN AL 2 DTE OPTIONS 5 TRANSMIT CLOCK 6 5 OPTIONS TI STREA M 8 CD OPTIONS TR OPTIONS SR O PTION S T Figure 6 6 Transmit Clock Options Table 6 4 shows the AT commands used to set the TRANSMIT CLOCK option Table 6 4 Transmit Clock AT Commands Front AT Description Panel Command 1 NORMAL 0 TX clock from DSU selected 2 EXTERNAL amp X1 ETC clock from DTE selected The EXTERNAL clock option is normally used in modem tail circuit appli cati
10. C 1 Appendix D EIA 232 D 1 Appendix E Specifications E 1 Appendix F 1 61200270L1 20 DSU III ARdc User Manual Table of Contents xvi DSU ARdc User Manual 61200270L1 20 List of Figures Figure 1 1 Figure 3 1 Figure 3 2 Figure 3 3 Figure 4 1 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Figure 6 9 Figure 6 10 Figure 6 11 Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 Figure 8 1 Figure 8 2 Figure 9 1 Figure 10 1 Figure 10 2 Figure 11 1 Figure 11 2 61200270L1 20 Sample Point to Point Application for DSU III ARdc 1 2 Example of Basic Menu Travel 3 4 050 ARdc Front 3 4 DSU III ARdc Rear 3 7 Complete Configuration 4 3 Setting Loop Rate Options 5 2 Setting the Network 5 3 Enabling Disabling Remote Configuration 5 4 Setting Network Type 5 5 Setting the Clock 5 6 DTE Rates for 56 or 64 kbps Loop Rate 6 1 DTE Rates for Loop Rates of
11. Table 5 5 shows the equiv alent AT commands for setting the clock source Select MASTER timing only if the circuit has no timing source CAUT for example two DSUs and a crossover cable Table 5 5 Clock Source Commands Front AT Description Panel Command 1 MASTER _X0 DSU is the master timing source 2 FROM NETWORK _ 1 Network Rx signal is timing source 5 6 DSU III ARdc User Manual 61200270L1 20 Chapere Configuring DTE Options DTE OPTIONS The DTE OPTIONS menu is used to select the configuration parameters that control the operation of the DSU ARdc s DTE interface DTE Rate The selectable DTE rates over a 56 or 64 kbps loop are shown in Figure 6 1 Ifa slower loop rate is selected then the DTE rate will either match the loop rate or it can be set to 1 2K see Figure 6 2 on page 6 3 The factory default setting is SAME As Loop 1 NETWORK OPT i2 CONNECTOR TYPE 2 DTE OPTIONS 1zLOCAL 3 CONFIG I2ZREMOTE JENTER ADDRESS 3 TEST OPTIONS 4 DIAL OPTIONS 5 OPTIONS Figure 6 1 DTE Rates for 56 or 64 kbps Loop Rate The equivalent AT commands for setting the DTE rate for a 56 kbps loop rate are shown in Table 6 1 on page 6 2 61200270L1 20 DSU III ARdc User Manual 6 1 Chapter 6 Configuring DTE Options Table 6 1 DTE Rate AT Commands Front AT Description Panel Command 1 DTE 2 4K rate 2 4K sy
12. be set independently of the DTE rate Eight loop rate selections are avail able shown in Figure 5 1 on page 5 2 61200270L1 20 DSU 1 ARdc User Manual 5 1 Chapter 5 Configuring Network Options 1 LOOP RATE 1 NETWORK OPT 2 N ETW O RK ADDR 1 LOCAL 2 DTE OPTIONS 2 REMOTE ENTER ADDRESSJ TEST O PTIO N S Figure 5 1 Setting Loop Rate Options The default factory setting is AUTO When configured to AUTO the DSU will automatically attempt to adapt to the loop rate If the loop rate is known select the rate from the menu The various loop rates and format selections are listed in Table 5 1 with the equivalent AT commands that perform the same configuration functions Table 5 1 Loop Rate Commands Front Panel AT Command 1 AUTO 0 2 2 4 1 3 4 8K B2 4 9 6K B3 5 19 2K B4 6 38 4K B5 7 56K 6 8 64K clear channel 7 5 2 DSU ARdc User Manual 61200270L1 20 Chapter 5 Configuring Network Options Network Address A two digit decimal address can be assigned to each DSU III ARdc This addressing capability makes it possible to perform remote configuration and testing in point to point and multi drop networks Figure 5 2 shows the menu path used to change the network address The factory default setting is 0 1 LO RATE ENTER NETWORK 3 REMOTE CONFIG 4 ETW RK TYPE 5 CLOCK SOURCE 1 LOCAL 2 REMOTE JENTER ADDRESS 2 DTE OPTION S
13. mulated by the test pattern detector If errors occur during this test the test error count can be reset to zero by pressing 1 To verify proper operation of this test single bit errors can be injected into the transmitted test pattern by pressing 2 These errors ap pear on the TEST ERR display Test Pattern The TEST PATTERN option converts the local DSU III ARdc into a BERT tester for the purpose of testing the DDS circuit When this test is used the remote DSU CSU must be in loopback or transmitting a test pattern Fig ure 11 13 on page 11 17 illustrates the data paths for this mode 11 16 DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting LOCAL REMOTE DSU CSU DSU CSU Error Test Pattern Inject Generator uan Test Pattern Generator Error Test Pattern Clear Detector Figure 11 13 Test Pattern Only Test Purpose Testing using a test pattern does the following Transmits user selected test pattern using an internal test pattern gen erator and compares the received data using internal test pattern de tector to detect if there are any errors on the DDS circuit e Injects errors and verifies the unit transmits data across the communi cation circuit to the remote unit e Helps determine from which direction the circuit is receiving errors Initiating Follow the menu path outlined in Figure 11 14 on page 11 18 to initiate a test using a test pattern 61200270L
14. 11 Testing and Troubleshooting After selecting REMOTE UNIT from the menu the following prompt is dis played for entering the address for the remote unit Enter Test Unit Address XX Use the number keys to type the address of the remote DSU then press En ter The test pattern selections are displayed After a test pattern is select ed the system briefly displays Please Wait Test Results If the test is successful the status menu is displayed If not Unable to Execute Test is displayed Interpreting Test Results If the unit is functioning properly the display should show TST ERR 00 61200270L1 20 DSU III ARdc User Manual 11 21 Chapter 11 Testing and Troubleshooting 11 22 DSU III ARdc User Manual 61200270L1 20 Chapter 12 Status Selection STATUS DISPLAY The STATUS selection displays two lines at a time of the current operation al status of the network and the DTE interfaces After 30 seconds of no front panel operation the DSU III ARdc automati cally reverts to the status display Examples of possible status displays are shown in Figure 12 1 Screen 1 DATA MODE DSU Operational Status LOOP IS NORMAL DDS Network Status Screen 2 LOOP 56K Network Rate DTE 56K SYNC DTE Rate Mode TR SR LLB lt Control Leads Suena ON ON OFF OFF 4 Control Lead Status Figure 12 1 Examples of Status Displays 61200270L1 20 DSU ARdc User Manual 12 1 Chapter 12 Status Selectio
15. 2 4 9 6 19 2 and 38 4 kbps 6 3 Selecting the Connector 6 4 Selecting Data 6 5 Selecting DTE Command Option 6 6 Transmit Clock Options 6 7 Selecting CS 6 8 Anti Stream 6 11 Selecting CD Options 6 12 Selecting TR 6 13 Setting SR 6 14 Setting Test Timeout Option 7 1 Remote Digital 7 2 EIA Local Loopback 7 3 EIA Remote Loopback 7 4 Editing Stored Phone 8 1 Enabling Disabling the Auto Answer Function 8 2 1 9 2 Dial Options Menu 10 1 Path to Storing Numbers 10 2 Normal Operation Before Initiating Loopback Test 11 1 Initiating Testi ccd eese 4 ee 11 2 DSU ARdc User Manual xvii List of Figures Figure 11 3 Figure 11 4 Figure 11 5 Figure 11 6 Figure 11 7 Figure 11 8 Figure 11 9 Figure 11 10 Figure 11 11 Figure 11 12 Figure 11 13 Figure 11 14 Figure 11 15 Figure 11 16 F
16. 2 on page 10 2 shows the menu path used to store phone numbers 61200270L1 20 DSU ARdc User Manual 10 1 Chapter 10 Dial Selection 1 N ETW O RK 2 OPTIONS 3 TEST OPTION S STO RED N UM BER 1 LOCAL 3 CONFIG 2 REMOTE ENTER ADDRESS Figure 10 2 Path to Storing Numbers Option 1 PHONE NUMBERS ae 1 10 JNNNNNNN 4 DIAL OPTIONS 2 AUTO AN SW ER 5 MANUALCOMMAND See Configuring Dial Options on page 8 1 for more information Enter Dial This option allows you to enter a phone number of up to 36 digits for the DSU III ARdc to dial Redial Last Selecting this option redials the last phone number entered 10 2 DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting TEST OVERVIEW The DSU III ARdc performs a variety of diagnostic functions that isolate portions of the circuit to identify the problem source Tests may be initiat ed and terminated from the front panel or the DTE interface In asynchro nous mode AT commands can control the testing from the DTE interface For synchronous operation V 25 bis commands can provide test control The unit also responds to standard DDS network tests initiated from telco test centers In addition it can run several tests such as local and remote loopbacks to aid in problem isolation See Figure 11 1 for an example il lustration of normal operation LOCAL REMOTE DTE DSU CSU DSU CSU DTE T i Tx 1 TD RD Rx
17. 3 TEST OPTIONS 4 DIALO PTION S 5 MANUALCOMMAND 3 CONFIG Figure 5 2 Setting the Network Address Table 5 2 shows the AT command used to set the network address Table 5 2 Network Address Command Front AT Description Panel Command XX Decimal Assigns a two digit network address Remote Configuration This option sets up the DSU III ARdc to accept or reject remote configura tion commands Figure 5 3 on page 5 4 shows the menu path for enabling disabling remote configuration The factory default setting is ENABLED 61200270L1 20 DSU III ARdc User Manual 5 3 Chapter 5 Configuring Network Options 1 DISABLED 3 REMOTE CONFIG 2 ENABLED 5 CLO CK SOURCE 2 DTE OPTIONS 2 REMOTE ENTER ADDRESS 3 TEST N S 5 MANUALCOMMAND Figure 5 3 Enabling Disabling Remote Configuration Table 5 3 shows the equivalent AT commands used to enable or disable re mote configuration Table 5 3 Remote Configuration Commands Front AT Description Panel Command 1 DISABLE amp P4 Disable remote configuration 2 ENABLE amp P5 Enable remote configuration Network Type This option configures the DSU III ARdc for the specific type of network being used The factory default setting is DEDICATED see Figure 5 4 on page 5 5 5 4 DSU III ARdc User Manual 61200270L1 20 Chapter 5 Configuring Network Options 1 LO RATE 2 N ET
18. FCC Rules and regulations intended to provide protection of the tele phone network from harm caused by connection of equipment to the network full duplex A circuit designed to transmit and receive data simultaneously F 4 DSU III ARdc User Manual 61200270L1 20 Appendix F Glossary half duplex A circuit designed to both transmit and receive data but not at the same time in band Signaling dialing diagnostics management configuration etc over the same channel used for data ISDN Integrated Services Digital Network A network architecture that enables end to end digital connections The network supports diverse services through integrated access arrangements and defines a limited set of standard multipurpose interfaces for equipment ven dors network providers and customers Interworking with a public switched telephone network is retained LATA Local Access and Transport Area One of 161 local geographical areas in the US within which a local telephone company may offer telecom munications services local or long distance local DTE and loop test A test initiated by the user that loops the DSU to the central office and back This is used to test the local DSU s DTE and local loop multi point A communications arrangement in which multiple devices share a common transmission channel although only one may transmit at a time Also referred to as multi drop nonvolatile memory Memory that is not lost when the powe
19. Front AT Description Panel Command 1 DISABLED _JO Auto Answer disabled 2 ENABLED Ji Auto Answer enabled 8 2 DSU III ARdc User Manual 61200270L1 20 Chapterg9 Manual Command MANUAL COMMAND The MANUAL COMMAND option is a shortcut method for entering configu ration and control commands for the DSU III ARdc Figure 9 1 on page 9 2 shows the menu path for MANUAL COMMAND The available manual commands are listed in Table 9 1 on page 9 2 When us ing the front panel perform the following steps to enter a manual com mand 1 Select 3 CONFIG from the Main menu 2 Select 1 LOCAL 3 Select 5 MANUAL COMMAND 4 The first display prompts for command number entry COMMAND 00 5 Use the up arrow key to delete the current entry then use the number keys to enter the new value Press Shift to activate letters A F 6 Press Enter to complete the command entry Once the command number is entered the display shows both the command number and the present value or setting for the command The command value can be edited or reissued with the existing value COMMAND XX VALUE 00 8 Use the number keys to enter the hexadecimal value Press Enter to complete The system briefly displays Command Accepted if the entry is valid and returns to the active menu 61200270L1 20 DSU 1 ARdc User Manual 9 1 Chapter 9 Manual Command 9 2 2 REMOTE ADDRESS 1 ETW ORK 3 TEST OPTIONS DIALO P
20. OTHER WARRANTIES INCLUDING WITHOUT LIMITATION ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES SO THIS EXCLUSION MAY NOT APPLY TO CUSTOMER In no event will ADTRAN or its suppliers be liable to Customer for any incidental special punitive exemplary or consequential dam ages experienced by either Customer or a third party including but not limited to loss of data or information loss of profits or loss of use ADTRAN is not liable for damages for any cause whatsoever whether based in contract tort or otherwise in excess of the amount paid for the item Some states do not allow the limitation or exclu sion of liability for incidental or consequential damages so the above limitation or exclusion may not apply to Customer Table of Contents Chapter 1 Introduction Product Overview 1 1 1 DDS Ovyvetview 2c ev dee Be ua um ule e ue ute 1 2 4 Wire Switched 56 Overview 1 2 Chapter2 Installation Unpack Inspect Power 2 1 Receipt Inspection s lees ex OP cease Ra E tees 2 1 Equipment Provided 2 1 Power Up edere eer Eel SUE TAM debe wes 2 1 Network Interface 2 2 DTE Data Connection Primary
21. With Test Pattern The DTE wrrH TP test pattern test is similar to the DTE ONLY test de scribed previously except the test pattern is generated using the DSU CSU internal test pattern generator This test can be used to detect defi ciencies within the internal drivers and receivers of the DSU III ARdc Fig ure 11 11 illustrates the loopback point and the data paths for this test LOCAL DSU CSU Error Test Pattern Inject Generator Figure 11 11 DTE with Test Pattern Test Purpose A DTE test using a test pattern is used for the following purposes e Verify integrity of the DTE interface e Verify integrity of connection between DTE and DSU III ARdc Initiating Follow the menu path outlined in Figure 11 12 on page 11 16 to initiate a DTE TEST USING A TEST PATTERN 61200270L1 20 DSU ARdc User Manual 11 15 Chapter 11 Testing and Troubleshooting 1 DTE amp LOOP LL 1 2047 PATTERN 2 LOOP ONLY RT 2 511 PATTERN 3 DTE ONLY 3 STRESS PTRN 1 4 DTE WITH TP 4 STRESS PTRN 2 1 LOCAL UNIT 5 TEST PATTERN 5 STRESS PTRN 3 2 TEST 6 SELF TEST 6 STRESS PTRN 4 2 REMOTE UNIT Figure 11 12 Initiating a DTE Test with Test Pattern Interpreting Test Results If the unit is functioning properly the DSU III ARdc displays DTE WITH TP TST ERR XX The first line of the display indicates the type of test being performed while the second line of the display indicates the number of errors accu
22. equals 30 seconds Timeout equals 60 seconds 61200270L1 20 DSU III ARdc User Manual 6 11 Chapter 6 Configuring DTE Options CD Options The CD OPTIONS menu is used to select one of three different control modes for the receive line signal detector CD lead The default factory setting is NORMAL see Figure 6 9 1 N ETW ORK 1 DTE RATE 2 DTE OPTIONS 5 TRAN SM IT CLOCK 1 LOCAL 2 REMOTE JENTER ADDRESS AN TI STREAM 1 FORCED ON TR OPTIONS A SR OPTIONS 3 0 FF WITH LOCD 3 TEST O PTION S 4 DIALO PTIO N S 5 MANUALCOMMAND Figure 6 9 Selecting CD Options Table 6 8 shows the equivalent AT commands for setting CD OPTIONS Table 6 8 CD Options AT Commands Front AT Description Panel Command 1 FORCED ON amp CO On all the time 2 NORMAL amp 1 On only when data present on loop 3 OFF WITH LOCD amp C2 On except after disconnect in Switched 56 application 6 12 DSU III ARdc User Manual 61200270L1 20 Chapter 6 Configuring DTE Options TR Options The TR OPTIONS menu is used to select the DSU ARdc response to the data terminal ready TR lead The factory default setting is IGNORED see Figure 6 10 1 N ETW O RK 2 DTE OPTIONS 1 IGNORED 2 IDLE WHEN OFF 4 0 FF gt ON DIAL 2 W TEST OPTION S 4 DIAL O PTIO N S 5 MANUALCOMMAND Figure 6 10 Selecting TR Options Table 6 9
23. is used for the purpose of looping the DDS circuit back to the telco No test results are available from the local DSU III ARdc DTE Only The DTE ONLY test provides a method for testing both the DTE interface drivers and receivers of the local DSU ARdc plus its loop transmitter and receiver For this test the loop transmit data is connected to the loop receive data at a point close to the physical network interface This test can be used to verify proper operation between the local DTE and the local DSU III ARdc OOF message from the network and enters an alarm state When this test is implemented the far unit recetves 5 61200270L1 20 DSU III ARdc User Manual 11 13 Chapter 11 Testing and Troubleshooting LOCAL DTE DSU CSU Figure 11 9 DTE Only Test Diagram Test Purpose The DTE ONLY test is used for the following purposes e Verify integrity of the DTE interface e Verify integrity of connection between DTE and DSU III ARdc Initiating Follow the menu path outlined in Figure 11 10 to initiate a DTE ONLY test 1 DTE amp LOOP LL 2 LOOP ONLY RT 3 DTE ONLY 4 DTE WITH TP 1 LOCAL UNIT 5 TEST PATTERN 2 TEST 6 SELF TEST 2 REMOTE Figure 11 10 Initiating a DTE Only Test 11 14 DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting Interpreting Test Results A BERT tester must be used to interpret the test results of a DTE ONLY test DTE
24. or analog that provides an access line to a digital or analog network UL Underwriters Laboratories A laboratory established by the National Board of Fire Underwriters that tests equipment materials and sys tems that may affect insurance risks with special reference to fire dangers and other hazards to life V 25 bis Automatic calling and answering command set including the ability to work with async bisync and HDLC devices Provides a small subset of the functions of the Hayes Standard AT Command Set 61200270L1 20 DSU ARdc User Manual F 7 Appendix F Glossary V 35 CCITT standard for trunk interface between a network access device and a packet network that defines signaling for data rates greater than 19 2 kbps VT 100 A non intelligent terminal or terminal emulation mode used for asyn chronous communications Used to configure the ADTRAN SMART 16 Shelf F 8 DSU III ARdc User Manual 61200270L1 20 Index A alarm indication 3 6 answer call 12 2 answering call 12 3 anti stream 6 10 AT command 6 11 factory default 6 11 AT commands 2 6 11 1 11 9 anti stream 6 11 clear to send CS 6 9 data format 6 5 data set ready SR 6 15 data terminal ready TR 6 13 DTE rate 6 1 EIA local loopback LLB 7 3 EIA remote loopback RLB 7 4 phone number 8 2 scrambler on off 6 2 test timeout 7 2 transmit clock 6 7 call disconnect 12 4 cancel 3 3 3 6 carrier detect CD 3 6 6 12 check telco line 12 3 clear t
25. shows the equivalent AT commands for setting TR OPTIONS Table 6 9 TR Options AT Commands Front AT Description Panel Command 1 IGNORED amp DO Ignore the TR input 2 IDLE WHEN OFF amp D2 See the following Note 3 OFF gt ON DIAL 1 amp D3 Dial Stored 1 TR goes off to on SW56 only 4 OFF gt ON DIAL 2 amp D4 Dial Stored 2 TR goes off to on SW56 only 61200270L1 20 DSU III ARdc User Manual 6 13 Chapter 6 Configuring DTE Options For IDLE WHEN OFF option In SW56 mode TR off causes the DSU to go On Hook Idle The unit also does not dial out if TR is off In dedicated mode the DSU goes into DTE command mode Won when TR goes off When TR goes on if the DSU does not receive a command in the number of seconds set in 540 the DSU goes into data mode SR Options The SR OPTIONS menu is used to select the operating mode for the data set ready SR lead Press Shift A to activate the SR OPTIONS sub menu The factory default setting is OFF TEST ONLY shown in Figure 6 11 1 N ETW ORK DTE RATE 2 DTE OPTIONS 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 1 LOCAL 1 FORCED ON 2 0 FFOOS ONLY 3 0 FF LOCD ONLY 4 OFF TEST ONLY 5 0 FF TEST 4005 FF TEST CD 2 REMOTE ENTER ADDRESS ROPTIONS A SR OPTIONS 3 TEST O PTION S 4 DIALO PTION S 5zMANUAL Figure 6 11 Setting SR Options 6 14 DSU III ARdc User Manual 61200270L1
26. the EIA LLB option 1 N ETW RK TYPE 2 DTE OPTIONS 1 5 TIM EO UT 1 DISABLED Figure 7 3 EIA Local Loopback Options Table 7 3 shows the equivalent AT commands for setting the EIA LLB op tions Table 7 3 EIA Local Loopback AT Commands Front AT Description Panel Command 1 DISABLED _AO EIA LLB disabled 2 ENABLED _ 1 EIA LLB enabled EIA Remote Loopback The EIA RLB Electronics Industries Association Remote Loopback op tion specifies whether or not the DSU III ARdc responds to the RLB input from the DTE The factory default setting is DISABLED Figure 7 4 on page 7 4 shows the menu path for the EIA RLB options 61200270L1 20 DSU III ARdc User Manual 7 3 Chapter 7 Configuring Test Options 1 ETW RK TYPE 2 DTE OPTIONS 1 TEST TIM EO UT 4 EIA RLB EN DIS 1 DISABLED Figure 7 4 EIA Remote Loopback Options Table 7 4 shows the equivalent AT commands for setting the EIA RLB op tions Table 7 4 EIA Remote Loopback AT Commands Front AT Description Panel Command 1 DISABLED _RO EIA RLB disabled 2 ENABLED _ 1 EIA RLB enabled 7 4 DSU III ARdc User Manual 61200270L1 20 Chaper amp Configuring Dial Options DIAL OPTIONS The DIAL OPTIONS menu stores up to ten phone numbers and defines the AUTO ANSWER operation of the DSU III ARdc when it is configured for Switched 56 operation Phone Number The DSU ARdc stores up to 1
27. 0 numbers of 36 digits each Edit a phone number by re entering the entire number This process overwrites the pre viously stored number Figure 8 1 shows the menu path used to access the PHONE NUMBER option 1 LOCAL 3 CONFIG 2 REMOTE JENTER ADDRESS 1 N ETW O RK TYPE 2 DTE OPTIONS 3 TEST OPTIONS ISTO RED N UM BER TO 1 PHONE NUMBERS a 1 10 NNNNNNN 4 DIAL OPTIONS 2 AUTO AN SW ER 5 MAN UAL Figure 8 1 Editing Stored Phone Numbers Table 8 1 on page 8 2 shows the AT Command for storing phone numbers 61200270L1 20 DSU III ARdc User Manual 8 1 Chapter 8 Configuring Dial Options Table 8 1 AT Command for Storing Phone Numbers AT Description Command amp zn Store Phone Number Auto Answer The AUTO ANSWER option is used to specify how incoming calls are to be answered If ENABLED incoming calls are automatically answered by the DSU III ARdc If DISABLED an incoming call can be answered manually by an AT or V 25 command from the DTE or by raising TR from the DTE Figure 8 2 shows the menu path used to enable or disable this option 1 ETW O RK TYPE 1 LOCAL 3 TEST OPTIONS 2 REMOTE JENTER ADDRESS 4 DIAL OPTIONS Figure 8 2 Enabling Disabling the Auto Answer Function 3 CONFIG 1 NUM BER 2 AUTO ANSWER 1 5 Table 8 2 shows the AT Commands available for the AUTO ANSWER option Table 8 2 AT Commands for Auto Answer
28. 1 20 DSU III ARdc User Manual 11 17 Chapter 11 Testing and Troubleshooting 1 DTE amp LOOP LL 1 2047 PATTERN 2 LOOP ONLY RT 2 511 PATTERN 3 DTE ONLY 3 STRESS PTRN 1 4 DTE WITH TP 4 STRESS PTRN 2 1 LOCAL UNIT 5 PATTERN 5 STRESS PTRN 3 2 TEST 6 SELF TEST 6 STRESS PTRN 4 2 REMOTE UNIT Figure 11 14 Initiating a Test Using a Test Pattern Interpreting Test Results If the unit is functioning properly the display should show the following TST ERR 00 Self Test The SELF TEST verifies current operation of the DSU III ARdc It can be performed at any time and is recommended if there is any question about the DSU s health Test Purpose To determine whether the DSU is functioning properly Initiating Follow the menu path outlined in Figure 11 15 on page 11 19 to initiate a test using a test pattern 11 18 DSU ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting 1 DTE amp LOOP LL 2 LOOP ONLY RT 3 DTE ONLY 4 DTE WITH TP 1 LOCAL UNIT 5 TEST PATTERN 2 TEST 6 SELF TEST 2 REMOTE UNIT Figure 11 15 Initiating a Self Test Interpreting Test Results Once SELF TEST is activated the LEDs cycle on and off as the system runs the self test A pass or fail status will be displayed on the LCD along with a checksum indicating the current firmware revision REMOTE UNIT DIAGNOSTICS A remote DSU III ARdc can perform seven different test
29. 1200270L1 20 Chapter 6 Configuring DTE Options Table 6 5 CS Options AT Commands Front AT Description Panel Command 1 FORCED ON amp RO CS always on 2 FOLLOWS RS amp R1 CS on with RS after delay off when RS or if DSU cannot pass data 3 FOLLOWS CD amp R2 CS off when CD goes off or if DSU cannot pass data 4 FOLLOWS amp R3 CS follows RS after delay and also RS CD off if CD off If CD goes off after RS is on DSU III will turn off CS but continue to pass data until RS goes off CS also off if DSU cannot pass data 5 OFF WITH LOCD amp R4 Off 5 sec after LOCD Valid only in SW56 mode CS is forced on but will turn off for 5 seconds after a call is disconnected For RS options select the RS to CS delay length 1 CS DELAY SHORT 2 CS DELAY LONG DO _01 Short delay from RS to CS selected Long delay from RS to CS selected Specified times for the short and long delays at the different operating speeds are shown in Table 6 6 on page 6 10 61200270L1 20 DSU III ARdc User Manual 6 9 Chapter 6 Configuring DTE Options Table 6 6 Short and Long Delays at Different Operating Speeds Rate Short Long Tolerance Option Option 64K 1 1ms 16 1ms 4ms 56K 1 1ms 16 1ms 4ms 38 4K 1 5ms 16 5ms 4ms 19 2K 1 5ms 16 5ms 4ms 9 6K 1 5ms 16 5ms 4ms 4 8K 1 9ms 16 9ms 7ms 2 4K 3 8ms 18 8ms 1 3ms Anti Stream The ANTI STRE
30. 20 Chapter 6 Configuring DTE Options Table 6 10 shows the AT commands for setting SR OPTIONS Table 6 10 SR Options AT Commands Front AT Description Panel Command 1 FORCED ON amp 50 Always 2 OFF OOS ONLY amp S1 Off when network Out Of Service OOS 3 OFF LOCD ONLY amp S3 Off 5 seconds after disconnect SW56 only 4 OFF TEST ONLY amp SO_CO Off when unit is in test 5 OFF TEST OOS amp S1 CO Off in test or OOS 6 OFF TEST LOCD amp S5 Off 5 seconds after disconnect or test 61200270L1 20 DSU III ARdc User Manual 6 15 Chapter 6 Configuring DTE Options 6 16 DSU III ARdc User Manual 61200270L1 20 Chapter7 Configuring Test Options TEST OPTIONS The TEST OPTIONS menu enables or disables different test modes and spec ifies the maximum test time allowed Test Timeout The TEST TIMEOUT option sets the length of time a DSU III ARdc remains in a test mode before automatically returning to the data mode Enter the timeout from 0 to 255 seconds The factory default setting is off 0 Figure 7 1 shows the menu path used to access TEST TIMEOUT 1 N ETW O RK OPT 2 DTE O PTION S 1 LOCAL 2 REMOTE ENTER ADDRESS 1 TEST TIMEOUT 2 RDL EN DIS 3 EIA EN DIS 4 EIA RLB EN DIS ENTER TIMEOUT O OFF 00 SEC 3 TEST OPTIONS DIALO PTION S 5 MANUALCOMMAND Figure 7 1 Setting Test Timeout Option Table 7 1 on page 7 2 shows the eq
31. 3 Chapter 12 Status Selection In SW56 mode the following messages are possible ANSWERING CALL The DSU III ARdc is answering an incoming call NO WINK FROM CO The DSU III ARdc did not see a proper signal from the network during di aling CALL DISCONNECT The SW56 connection was terminated Network Rate The message displayed on this line of the Status display screen indicates the rate of the service configured for the network DTE Rate Mode The message displayed on this line of the Status display screen indicates the DTE data rate and format DTE Control Leads and Status Four additional DTE interface leads are displayed with their current status on or off displayed below them The leads are identified as follows TR Data terminal ready SR Data set ready LLB Local loopback RLB Remote loopback 12 4 DSU ARdc User Manual 61200270L1 20 Appendix A AT Commands Table A 1 shows the AT commands available for the DSU III ARdc Table A 1 AT Commands Command Title Default A Re execute Command none ATA Answer none ATDn Dial Number none ATE Echo Command 1 ATH Hang Up Call none ATO Go Online none ATQn Result Code Display 0 ATSn Read S Register none ATSn x Write to S Register none ATVn Result Code From 1 ATZ Reset none AT amp Cn DCD Option 0 AT amp Dn DTR Option 0 AT amp Fn Restore Factory Options none AT amp Kn Flow Control none AT
32. 56 mode the DSU III ARdc supports DTE rates of 1 2 2 4 4 8 9 6 192 38 4 async or sync and 56 kbps sync An additional DTE rate of 57 6 kbps is available in async modes 1 2 DSU III ARdc User Manual 61200270L1 20 Chapter2 Installation UNPACK INSPECT POWER UP Receipt Inspection Carefully inspect the DSU III ARdc for any shipping damage If damage is suspected file a claim immediately with the carrier and contact ADTRAN Customer Service If possible keep the original shipping con tainer for use in shipping the DSU III ARdc for repair or for verification of damage during shipment Equipment Provided The following items are included in ADTRAN shipments of the DSU III ARdc 9 DSU III ARdc unit e An8 position modular to 8 position modular cable e The user manual The customer must provide an EIA 232 interface cable with standard 25 pin male D type connectors Cannon or Cinch DB 19604 432 or a V 35 cable Power Up Each DSU unit is provided with a three position terminal block which ac comodates 12 to 26 AWG wire The positive and negative terminals connect to a 24 to 48 VDC 0 4A power source 61200270L1 20 DSU ARdc User Manual 2 1 Chapter 2 Installation dim The chassis should be connected to earth ground The following UL requirements must be met during installation 1 The unit must be connected to a reliably grounded 24 or 48 VDC source which is electrically isolated from the AC sourc
33. 6 shelf used to connect a VT 100 terminal or DATAMATE for configuring SMART 16 DSU CSU products F 2 DSU ARdc User Manual 61200270L1 20 Appendix F Glossary customer premise equipment CPE All telecommunications terminal equipment located on the cus tomer premises including telephone sets private branch exchanges PBXs data terminals and customer owned coin operated tele phones clear to send CTS also called CS A signal on the DTE interface indicating that the DCE is clear to send data DATAMATE An ADTRAN designed and manufactured device that provides a hand held means of configuring the SMART 16 shelf The DATA MATE plugs into the front of the controller card and provides a 2x16 LCD display and full numeric keypad data service unit DSU A device designed to transmit and receive digital data on digi tal transmission facilities digital data service DDS also called Digital Data System A private line digital service for transmitting data end to end at speeds of 2 4 4 8 9 6 and 56 kbps and in some cases 19 2 38 4 or 64 kbps The systems can use central hub offices for obtaining test access bridging legs of multipoint cir cuits and cross connecting equipment DDS is offered on an inter LATA basis by AT amp T and on an intra LATA basis by the Bell operat ing companies data set ready SR A signal on the EIA 232 interface that indicates if the communi cation is connected and ready to start handshaking co
34. AM option is used to select the anti stream timeout Figure 6 8 on page 6 11 shows the menu path used to access the ANTI STREAM op tions menu The anti stream timeout is the maximum time the DSU III ARdc transmits data to the network from the DTE This feature prevents one DTE device on a multi drop network from continuously tying up the transmit circuit back to the master DSU The anti stream timer is reset to zero when RS changes to the active state and is updated every second while RS is active When the anti stream tim eout expires the DSU III ARdc stops transmitting DTE data into the net work but continues to accept data from it This condition exists until the DTE deactivates the RS input 6 10 DSU III ARdc User Manual 61200270L1 20 1 N ETW O RK OPT 2 DTE OPTIONS Chapter 6 Configuring DTE Options DTE RATE RAN SMIT CLOCK 6 CS OPTIONS 7 ANTI STREAM 1 TIMER OFF 2 TIME 10 SEC 3 TIM E 30 SEC 8 CD OPTIONS TIM E 60 SEC ROPTIONS 2 REMOTE JENTER ADDRESS 3 TEST OPTIONS 4 DIALO PTIO N S 5 MANUALCOMMAND Figure 6 8 Anti Stream Options The factory default setting is TIMER OFF Table 6 7 shows the available op tions and their AT commands Table 6 7 Anti Stream AT Commands Front AT Description Panel Command 1 TIMER OFF 0 Anti stream timer disabled 2 TIME 10 SEC 1 3 TIME 30 SEC 2 4 60 SEC 9eT3 Timeout equals 10 seconds Timeout
35. B V 115 Receiver Signal Element Timing SCR A X 115 Receiver Signal Element Timing SCR B P 103 Transmitted Data SD A S 103 Transmitted Data SD B Y 114 Transmitter Signal Element Timing SCT A AA 114 Transmitter Signal Element Timing SCT B U 113 External TX Signal Element SCX A W 113 External TX Signal Element SCX B NN Test Indicator CONFIGURATION The DSU III ARdc contains four different user profiles sets of configura tions options that are stored in read only memory These profiles are list ed in Default Configuration Profiles on page B 1 The unit is shipped from the factory with profile 1 default configuration loaded into the nonvola tile configuration memory If profile 1 matches the desired system re 61200270L1 20 DSU 1 ARdc User Manual 2 5 Chapter 2 Installation quirements then no additional configuration is required to put the unit into service If profile 1 does not match the desired system requirements modify the default configuration or select another profile more closely matching the desired configuration and modify When anew profile is loaded or the existing profile is modified it is stored in the nonvolatile configuration memory The DSU III ARdc is then con figured with that profile every time power is turned on or reset See Manual Command on page 9 1 for information on loading default con figuration profiles Configuration Methods The DSU III ARdc provides methods fo
36. DSU ARdc Data Service Unit Part Number 1200270L1 Document Number 61200270L1 20A January 2000 Trademarks Hayes is a registered trademark of Hayes Microcomputer Products Inc ADRAN 901 Explorer Boulevard P O Box 140000 Huntsville AL 35814 4000 256 963 8000 2000 ADTRAN Inc All Rights Reserved Printed in U S A Win Notes provide additional useful information Cautions signify information that could prevent service CAUT interruption Warnings provide information that could prevent dam X N ARNING age to the equipment or endangerment to human life IMPORTANT SAFETY INSTRUCTIONS Save These Instructions When using your telephone equipment please follow these basic safe ty precautions to reduce the risk of fire electrical shock or personal in jury 1 Do not use this product near water such as near a bath tub wash bow kitchen sink laundry tub in a wet basement or near a swimming pool 2 Avoid using a telephone other than a cordless type during an electrical storm There is a remote risk of shock from lightning 3 Do not use the telephone to report a gas leak in the vicinity of the leak 4 Useonly the power cord power supply and or batteries indicat ed in the manual Do not dispose of batteries in a fire They may explode Check local codes for any special disposal instructions FCC regulations require that the following information be pro vided in this manual
37. EST HO CD 11 DISABLED 5 SOURCE 1 4 DTE CMD OPTION 2 AT COMMAND SET 2 FROM NETWORK 25 SYNC 4 25 BSC ASYNC EN TER TIMEOUT 5 TRAN SMIT CLOCK 1 NORMAL 1 FORCED 1 TIMEOUT O O FF 00 SEC 2 AL 2 5 Rs 6 5 OPTIONS B ouows CD 2 RDLEN DIS I RDLIGNO RED 2 RDLACCEPTED 7 AN TISTREAM 1 OFF J4 FO LOWS RS4CD 2 nME 10 SEC 3 ElA UB EN DIS 1 DISABLED SEC 5 WITH LOCD 2 EN ABLED 4 60 SEC B CD OPTIONS 1 FORCED ON 4 EN DIS pm 2 NORMAL lo TR OPTIONS 3 CONFIG STORED NUMBER 1 NUMBERS ro EDIT 1 10 2 AUTO ANSWER 1 DISABLED 2 ENABLED S MANUALCOMMAND coMMAND o0 COMMAND HH Figure 4 1 Complete Configuration Menu 61200270L1 1 DSU ARdc User Manual 4 3 102200219 enuen 49S Ill NSA v v UOHeINGYUOD Jeydeuo Chapter5 Configuring Network Options NETWORK OPTIONS The NETWORK OPTIONS configuration parameters control the loop opera tion of the DSU III ARdc Once a parameter is set Command Accepted is displayed briefly before returning to the active menu Loop Rate The Loop RATE option sets the loop operating speed The unit should be set to the rate required by the DDS service The DSU III ARdc also sup ports subrate DTE data over a 56 kbps or 64 kbps loop The loop rate must
38. Interpreting Test Results 11 13 n oe bita cono nM A 11 13 Test Purposes i eres a e oet ELO e S ST d 11 14 Initiatinie e e Pg pet Rue qua 11 14 Interpreting Test Results 11 15 DTE With Test Pattern 11 15 Test P tpOoseso2u ee I ebore 11 15 ieu three be PE e IU gue 11 15 Interpreting Test Results 11 16 T st Patterm e e tes LL ELA UP cae 11 16 Test Purposes ey EO S ana 11 17 sete err UE coat eter pcs dures qa 11 17 Interpreting Test Results 11 18 thee d ir a sa 11 18 Test Purpos 36 402 uU Oed 11 18 ev pee gebe 11 18 Interpreting Test Results 11 19 Remote Unit Diagnostics 11 19 Test P rpose Seta tok Ponta Tee na ae 11 20 Initiating oodd sp erp ker etna eee 11 20 Test ER ES dle T ok ana setas 11 21 Interpreting Test Results 11 21 Chapter 12 Status Selection STATUS display eb iri ERIT E SR
39. N 3 6 STRESS PTRN 4 6 SELFT TEST STATUS DISPLAY 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 1 EXIT TEST ADDRESS 0 4 STRESS PTRN 2 STATUS DISPLAY 2 DISPLAY STATUS 5 STRESS PTRN 3 6 STRESS PTRN 4 7 DATA FROM DTE Figure 11 4 Complete Test Menu DSU III ARdc User Manual 61200270L1 20 TROUBLESHOOTING Chapter 11 Testing and Troubleshooting This section provides a quick and easy means of diagnosing suspected problems associated with local or remotely attached ADTRAN DSU CSUs Two separate troubleshooting sections are provided one focuses on new installs the other on existing circuits Messages from the DSU CSU The DSU III ARdc displays messages on the LCD display and LEDs con cerning the status of the unit and the local loop If the Alarm LED is on one or more of the messages shown in Table 11 1 are displayed on the LCD The STATUS menu must be selected in order for the unit to b display status messages Pressing Quick returns to the MAIN menu where STATUS can be selected Table 11 1 Messages from the DSU CSU sealing current but no data signal from telco Message Meaning Probable Cause Action LOOP IS Good local loop Indicates good No action required unit NORMAL signal being local loop properly connected to received from the telco circuit telco OPEN LOOP Unit not receiving Bad telco cable Replace telco cable signal from t
40. NECTOR TYPE 1 NETWORK OPT 1 LOCAL 3 DATA FORMAT 3 CONFIG 2 DTE OPTIONS 4 DTE CMD OPTION 2 REMOTE ENTER ADDRESS 5 TRANSMIT CLOCK 6 CS OPTIONS 7 ANTI STREAM 8 CD OPTIONS 9 TR OPTIONS 3 TEST OPTIONS A SR OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND Figure 6 2 DTE Rates for Loop Rates of 2 4 9 6 19 2 and 38 4 kbps The 1 2K setting is for data mode only The unit will not respond to any in band command modes such as AT commands or V 25 Win bis If any command modes are set they will be disabled when the 1 2K setting is selected 61200270L1 20 DSU III ARdc User Manual 6 3 Chapter 6 Configuring DTE Options Connector Type The CONNECTOR TYPE option is used to specify which of the primary chan nel connectors is used to connect to the DTE Figure 6 3 shows the menu path used to set the connector type The factory default setting is V 35 There are no AT commands available to set the connector type 1 N ETW O RK 1 DTE RATE 1 ElA232 CONNECTOR TYPE 2 V 35 DATA FO RMAT 2 DTE OPTIONS 2 REMOTE ADDRESS R OPTIONS 5 OPTIONS 3 TEST OPTIONS 4 DIALO PTIO N S 5 MANUALCOMMAND Figure 6 3 Selecting the Connector Type 6 4 DSU III ARdc User Manual 61200270L1 20 Chapter 6 Configuring DTE Options Data Format The DATA FORMAT option is used to select either the SYNCHRONOUS or ASYNCHRONOUS mode of operation for th
41. T 8 2 Chapter 9 Manual Command Manual 9 1 Chapter 10 Dial Selection DialOptionsi ento I tM e 10 1 Dial Stored o ei EE Rota 10 1 Enter Dials aS Rechner E orti eG 10 2 Redial ese bed repas 10 2 Chapter 11 Testing and Troubleshooting TEST OVERVIEW dete tate Doreen etd 11 1 Initiating a Festius rei wit Sed ne ey ie eie eie Erde 11 2 Test Status Display 11 2 Exiting a Test 2i ES ee Sua Sac ian e a eee den 11 3 Troubleshooting d eir Rep nu e ap ett Restrepo eh 11 5 Messages from the DSU CSU 11 5 Troubleshooting New Installs 11 7 Troubleshooting New Installs or Existing Circuits 11 8 Local Unit 11 9 DIE amp Loop ete ee cee Salons ER hee ires 11 10 61200270L1 20 DSU III ARdc User Manual xiii Table of Contents Test DescriptiOR scsi pen eee ea 11 10 Test PUrpOS ans us vex e ert et res e ee Es 11 11 ete recede deter eu rd muda us 11 11 Interpreting Test Results 11 12 Loop Only RD een cake etl wee eae 11 12 Test Purpose eb Edu ea vl ee PSE ex de 11 12 ee te ete eH ete rum 11 12
42. TIO N S 5 MANUAL COMMAND COMMAND 00 COMMAND 00 IVALUE 00 Figure 9 1 Manual Commands Table 9 1 Manual Commands Command Description Command Value AT Command Echo Disable 82 00 Enable 82 01 AT Result code Enable 85 00 Disable 85 01 AT Long or Short code Short form 86 00 to FF Long form 86 00 to FF AT Escape Character 2 00 to FF AT CR Character 3 00 to FF AT LF Character 4 00 to FF AT BS Character 5 00 to FF AT Escape Char Timer 0 00 to FF Abort Call Timer 7 00 to FF DTR Recognize Delay x 2 5ms 19 00 to FF DTR Initiated Command Timeout 28 00 to FF seconds Load Factory Opt Option Set 1 8A 00 Option Set 2 8A 01 Option Set 3 8A 02 Option Set 4 8A 03 Network Address Lock Network Addr Unlock C3 00 Network Addr Lock C3 01 DSU III ARdc User Manual 61200270L1 20 Chapter 10 Dial Selection DIAL OPTIONS The DIAL selection available in the MAIN menu 4 Dial includes options for manual dialing redialing and dialing stored numbers The DIAL selec tion is available for use only if AT amp T MCI SW56 or US SPRINT SW56 is the selected NETWORK TYPE Figure 10 1 shows the menu path used to ac cess these options 12DIAL STO RED Select Stored N umber 1 A Figure 10 1 Dial Options Menu Dial Stored This option allows a stored number to be dialed The numbers are stored within the CONFIG selection Figure 10
43. TS 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 vi 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 by an authorized Ca nadian maintenance facility designated by the supplier Any
44. W O RK ADDR 3 REMOTE CONFIG 1 NETWORK OPT 4 NETWORK TYPE 1 DEDICATED 2 AT amp T MCI SW 56 3 US SPRINT SW 56 5 CLO CK SOURCE 3 TEST OPTIONS DIALO PTION S 5 MANUALCOMMAND Figure 5 4 Setting Network Type Options Table 5 4 shows the equivalent AT commands that perform the same con figuration functions Table 5 4 Network Type Commands Front AT Description Panel Command 1 DEDICATED amp LO Any 4 wire DDS network 2 AT amp T MCI amp L1 AT amp T MCI Switched 56 service 3 US SPRINT amp L2 US SPRINT Switched 56 service MAIN menu displays the DIAL selection dim When AT amp T MCI SW56 or US SPRINT SW56 is selected the CAUT Clock Source The CLOCK SOURCE options specify the timing source for the DSU III ARdc s internal circuitry The factory default setting is FROM NETWORK see Figure 5 5 on page 5 6 61200270L1 20 DSU III ARdc User Manual 5 5 Chapter 5 Configuring Network Options 1 LO RATE 2 N ETW O RK ADDR 3 REMOTE CONFIG N ETW RK TYPE 5 CLOCK SOURCE 1 MASTER 2 FROM NETWORK 1 NETWORK OPT 1 LOCAL 3 CONFIG 4 DIAL N S 2 REMOTE ENTER ADDRESS 5 MANUALCOMMAND Figure 5 5 Setting the Clock Source When operating on a DDS network the timing should be FROM NETWORK On a point to point private network one DSU III ARdc must be set for MASTER and the other set for FROM NETWORK
45. alid V 25 command processed INV Invalid command received CFI Call failed INC Incoming call CNX Call connected 61200270L1 20 DSU III ARdc User Manual 2 9 Chapter 2 Installation Syntax and Possible Responses CIC Connect Incoming Call This command causes the DSU to go on line For dial backup units this command hangs up the dial backup line and initiates an attempt to re es tablish the main DDS line There are no parameters associated with this command Possible indications include VAL CNX and CFIxx CNL Configuration Local This command is used to pass AT commands to the local modem via the V 25 bis command processor This allows the DSU III ARdc to be config ured with AT commands via a synchronous interface The command has the following format CNL LOCAL PASSWORD AT ONE OR MORE AT COMMANDS A local password may not be required depending on the present configu ration of the unit Responses to CNL commands are returned in the data format currently configured Possible responses include VAL and INVn CNR Configuration Remote This command is used to pass AT commands over the network to the re mote DSU via the V 25 bis command processor This allows a remote DSU III ARdc to be configured from a synchronous interface The command s format is as follows CNR REMOTE PASSWORD AT ONE OR MORE AT COMMANDS The remote password may or may not be required depending on the present configura
46. amp Ln Network Type 0 AT amp Qn DTE Data Format 0 AT amp Rn CS Options 0 AT amp Sn SR Options 0 AT amp Tn Test Commands 0 AT amp V View Current Configuration none AT amp Xn Transmit Clock 0 AT amp Yn Power Up User Profile 0 61200270L1 20 DSU ARdc User Manual Appendix A AT Commands A 2 AT amp Znzx Store Phone Number none AT Bn Loop Rate Select 0 AT Kn DTE Rate Select AT P Password Control 0 AT P x Password Entry 0 T P gt x Password Verify 0 AT R Initiate Remote Config Anti Stream Option 0 AT_An LLB Control 0 AT_Cn SR Control During Test 0 AT_Dn RTS CTS Delay 0 AT_Fn Scrambler Control 0 AT_Jn Auto Answer Enable Disable 0 AT_N xx Set Network Address none AT_Pn Front Panel Enable Disable 0 AT_Rn LB Enable Disable 0 5 Set Serial Number none AT_Tn Select Test Pattern 0 AT_Xn Clock Source Select 0 DSU III ARdc User Manual 61200270L1 20 Appendix8 Default Configuration Profiles DEFAULT CONFIGURATION PROFILES The DSU III ARdc contains four different user profiles sets of configura tions options stored in read only memory see Table B 1 on page B 2 The unit is shipped from the factory with profile 1 loaded into the nonvol atile configuration memory See Installation on page 2 1 and Manual Com mand on page 9 1 for more information Profile 1 Profile 1 is configured for a 56 kbps synchronous point to point or dial up ope
47. ands is used the individual commands may be separated with spaces for readability The maximum length for a command line is 40 characters Each command line is executed by the DSU III ARdc 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 53 Before the terminating character is transmitted the command line can be edited by using the backspace character ASCII 008 to erase errors so the proper commands can be entered Valid AT commands for the DSU III ARdc are listed in AT Commands on page A 1 V 25 bis Commands When configured for the V 25 bis option the DSU III ARdc accepts in band dialing and configuration commands from both synchronous and asynchronous DTE ports The V 25 bis option supports the following protocols e SDLC synchronous data link control e e Asynchronous SDLC Option Character Format Data bits 8 61200270L1 20 DSU ARdc User Manual 2 7 Chapter 2 Installation e Parity bit Ignored Command Structure F A C V 25 bis COMMAND FCS F The address field A is FFH The control field C is set to 13H except for cases of multi frame responses For this case the control field is set to 08H in all but the last frame The 03H in the control field indicates that other frames are to follow while the 13H in the control field indicates the final frame Bi Sy
48. cal Loopback AT 7 3 EIA Remote Loopback AT 8 7 4 AT Command for Storing Phone Numbers 8 2 AT Commands for Auto 8 2 Manual 9 2 Messages from the 5 5 11 5 Troubleshooting New Installs 11 7 Test AT 11 9 DTE With Test Pattern Commands 11 10 Remote Tests Commands 11 19 AT Commands 5 Le pepe RS A 1 61200270L1 20 DSU III ARdc User Manual xix List of Tables Table B 1 Default Configuration Profiles B 2 XX DSU III ARdc User Manual 61200270L1 20 Chapter1 Introduction PRODUCT OVERVIEW The ADTRAN DSU III ARdc provides a reliable high speed data connec tion for customer data terminal equipment DTE through digital data ser vice DDS lines or 4 wire Switched 56 SW56 network lines The DSU III ARdc supports both synchronous and asynchronous data communication over the DDS or 4 wire Switched 56 networks This unit is an all rate DSU CSU supporting services from 2 4 to 64 kbps including 19 2 and 38 4 kbps services The DSU III ARdc may be used in either point to point or multi point circuits The DSU III ARdc provides both V 35 and EIA 232 electrical and physical DTE interfaces to accommodate a variet
49. call pending This allows local commands to be issued and incoming calls to be ignored There are no parameters asso ciated with this command The DSU responds with VAL PRN Program Number This command stores the supplied number into the specified register The command has the following format PRN REGISTER NUMBER NUMBER TO BE STORED 61200270L1 20 DSU III ARdc User Manual 2 11 Chapter 2 Installation If this command is entered with no parameters the INVPS response is re turned Ifno register number is included in the command or if it is invalid the INVPV response is returned This response is also returned if the num ber to be stored contains invalid characters The characters 1 2 3 4 5 6 7 8 9 0 P T and amp are valid dial characters If no digits are issued with this command the specified register is cleared The DSU responds with VAL RLN Request List of Numbers This command causes the DSU III ARdc to return the number stored in the specified register The format of this command follows RLN REGISTER NUMBER If the register number is invalid the INVPV response is returned When correct register number is entered the following response is returned LSN REGISTER NUMBER NUMBER STORED VAL If no register number is present in the command the DSU III ARdc re sponds with a list of all the registers and the stored numbers This li
50. e 2 The branch circuit overcurrent protection should be a fuse or circuit breaker rated 48 V 15 A 3 Theunit should be installed in accordance with the requirements of NEC NFPA 70 4 Areadily accessible disconnect device that is suitably approved and rated should be incorporated in the fixed wiring NETWORK INTERFACE CONNECTION The DSUIII ARdc s eight position modular jack labeled TELCO connects to the network when the unit is configured for either dedicated or switched operation See Table 2 1 for the connector pin assignments Table 2 1 Pin Assignments for Telco Connector Pin Name Description 1 R1 Transmit Data from DSU to Network Ring 1 2 T1 Transmit Data from DSU to Network Tip 1 3 6 Not Used 7 T Receive Data from Network to DSU Tip 8 R Receive Data from Network to DSU Ring 2 2 DSU III ARdc User Manual 61200270L1 20 Chapter 2 Installation DTE DATA CONNECTION PRIMARY DTE The primary DTE should be connected to either the EIA 232 DTE connec tor or the CCITT V 35 DTE connector The maximum cable lengths recom mended are 50 feet for the EIA 232 and 100 feet for the CCITT V 35 The pin assignments for the connectors are listed in Table 2 2 on page 2 4 and Table 2 3 on page 2 5 The V 35 connector is recommended for use with data rates above 19 2 kbps The EIA 232 connector works up to 56 kbps with a low capaci tance cable or with the external transmit clock option selected Th
51. e DTE rate is configured from the front panel The DTE can operate in asynchro nous or synchronous modes To prevent possible radio frequency interference emissions a CAUT shielded cable is required 61200270L1 20 DSU III ARdc User Manual 2 3 Chapter 2 Installation 2 4 Table 2 2 Pin Assignments for Primary EIA 232 Connector Pin EIA Description 1 AA Protective Ground PG 2 BA Transmit Data TD 3 BB Receive Data RD 4 CA Request to Send RS 5 CB Clear to Send CS 6 CC Data Set Ready SR 7 AB Signal Ground SG 8 CF Received Line Signal Detector CD 9 12 Test Point 10 12 Test Point 15 DB Transmit Clock TC 17 DD Receive Clock RC 18 Local Loopback LL 20 CD Data Terminal Ready TR 21 Remote Loopback RL 22 CE Ring Indicator 24 DA External TX Clock ETC 25 Test Indicator 1 DSU III ARdc User Manual 61200270L1 20 Chapter 2 Installation Table 2 3 Pin Assignments for Primary V 35 Connector Pin CCITT Description A 101 Protective Ground PG B 102 Signal Ground SG 105 Request to Send RS D 106 Clear to Send CS E 107 Data Set Ready SR F 109 Received Line Signal Detector CD H Data Terminal Ready TR J Ring Indicator RI L Local Loopback LL N Remote Loopback RL R 104 Received Data RD A T 104 Received Data RD
52. e DTE interface The factory de fault setting is SYNCHRONOUS see Figure 6 4 If ASYNCHRONOUS is cho sen the length of the data bytes must be selected 1 DTE RATE 2 CO N N ECTOR TYPE Ent 9 BITS 3 DATA FORMAT 1 ASYNCHRONOUS 2 10 BITS 3 5 11 BITS 2 SYNCHRONOUS 4 DTE CMD OPTION 5 TRAN SMIT CLOCK CS OPTIONS AN TI STREAM CD OPTIONS roy SR OPTIONS Figure 6 4 Selecting Data Format Table 6 3 shows the AT commands that can be used to set the DATA FOR MAT Table 6 3 Data Format Commands Front AT Description Panel Command 1 ASYNCHRONOUS 00 Always asynchronous 2 SYNCHRONOUS amp Q2 Always synchronous For asynchronous options select the length of the data bytes 1 ASYNC 9 BITS N A 9 bits including start stop parity 2 ASYNC 10 BITS N A 10 bits including start stop parity 3 ASYNC 11 BITS N A 11 bits including start stop parity 61200270L1 20 DSU III ARdc User Manual 6 5 Chapter 6 Configuring DTE Options DTE Command Option The DTE COMMAND option is used to enable AT commands from the DTE enable V 25 bis SDLC synchronous data link control commands enable V 25 bisync and async or disable all DTE command modes see Figure 6 5 1 N ETW ORK 1 DISABLED 2 AT COMMAND SET 4 DTE CMD OPTION 2 DTE OPTIONS 4 25 BSC ASYNC 1 LOCAL 2 REMOTE JENTER ADDRESS 5 TRAN SMIT CLO CK
53. e 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 Notes
54. ensions 2 25 H 8 75 W 10 25 D Weight 3 lbs Power 24 to 48 VDC 8 W MTBF 334 561 hours 61200270L1 20 DSU ARdc User Manual E 3 Appendix E Specifications Summary E 4 DSU III ARdc User Manual 61200270L1 20 Appendix F Glossary 2047 A pseudorandom test pattern that is repeated every 2047 bits used to test DSU CSUs 511 A pseudorandom test pattern that is repeated every 511 bits used to test DSU CSUs 4 wire switched 56 An AT amp T proprietary 56 64 kbps switched digital data service offered by telco service providers and delivered to users over 4 cop per wires Compatible with the ADTRAN DSU III S4W and with the DSU III TDM 4 wire Switched 56 TDM option asynchronous A method of data transmission which allows characters to be sent at irregular intervals by preceding each character with a start bit fol lowed by a stop bit AT commands Also known as the Hayes Standard AT Command Set A language that enables PC communications software to control asynchronous and Hayes compatible modems AT is short for attention AWG American Wire Gauge Standard measuring gauge for nonferrous conductors i e non iron and non steel The higher the AWG num ber the thinner the wire 61200270L1 20 DSU III ARdc User Manual F 1 Appendix F Glossary BERT Bit error rate test A known pattern of bits is transmitted and the errors received are counted to figure the bit error rate The idea is to measure the quality o
55. enter 3 3 3 4 exit test 11 3 external clock 6 7 D 1 F function keys 3 3 Index 2 DSU III ARdc User Manual incoming call 12 2 installation 2 1 INV 2 9 INVBL 2 9 INVBM 2 9 INVCU 2 9 INVPS 2 9 INVPV 2 9 L LCD window 3 4 LED description 3 6 local configuration 4 1 local loopback 11 1 12 4 local unit test 11 9 loop only RT 11 12 loop rate 3 3 5 1 M main menu 3 1 3 5 11 3 manual command 4 1 9 1 menu structure 3 1 modem tail circuit application C 1 modem tail circuit application 6 7 C 1 network interface connection 2 2 interface parameters 4 1 network address 5 3 network options 3 3 4 1 5 1 network rate 12 4 no frame sync 12 3 no Rx signal 12 3 61202013L1 20 no wink from CO 12 4 numeric keypad 3 4 OOS OOF from net 12 3 open loop 12 3 operation 3 1 11 1 phone number 8 1 AT commands 8 2 pin assignments line 1 connector 2 2 primary EIA 232 connector 2 4 primary V 35 connector 2 4 2 5 point to point operation B 1 power connection 3 7 power switch 3 7 power up 2 1 primary V 35 3 7 Q quick 3 5 R rate adapting 12 3 rear panel 3 6 receipt inspection 2 1 receive data 3 6 remote command 2 11 remote configuration AT commands 5 4 5 5 enable disable 5 3 remote loopback 11 1 12 4 request to send 3 6 return material RMA viii authorization 61202013L1 20 DSU III ARdc User Manual Index S scrambler on off 6 2 AT commands 6 2 factory default 6 2 self te
56. eshooting Figure 11 3 shows an example of a Test Status Display for a test with a test pattern While this menu is on the display Press 1 to clear errors Press 2 to inject an error TEST PATTERN TST ERR 00 LOOP 56K Us te Urd Domos DTE 56K SYNC to dBoter tussreen TR SR LLB OFF OFF OFF OFF UNIT IN TEST LO OP ISNORMAL Figure 11 3 Sample Test Status Displays Exiting a Test During a test press Quick to access the ExiT TEST DISPLAY STATUS menu or press Cancel to return to the MAIN menu The Exit TEsT DisPLAY STA TUS menu provides the following options which are available only after a test has been initiated Exit Test Exits the current test and returns to the Main menu Display Status Re enters test display 61200270L1 20 DSU III ARdc User Manual 11 3 Chapter 11 Testing and Troubleshooting 2 REMOTE UNIT ENTER TEST UNIT 1 LOCAL UNIT 1 DTE amp LOOP LL STATUS DISPLAY 1 TEST 2 DISPLAY STATUS 1 EXIT TEST 2 LOOP ONLY RT STATUS DISPLAY 2 DISPLAY STATUS 1 EXIT TEST 3 DTE ONLY STATUS DISPLAY 2 DISPLAY STATUS 122047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 DTE WITH TP 4 STRESS PTRN 2 TEST STATUS DISPLAY 2 DISPLAY STATUS 5 STRESS PTRN 3 6 STRESS PTRN 4 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 5 TEST PATTERN 4 STRESS PTRN 2 STATUS DISPLAY 1 EXIT TEST 2 DISPLAY STATUS 5 STRESS PTR
57. est pattern when required For more information see Testing and Troubleshooting on page 11 1 Configuration CONFIG CONFIGURATION is used to select network and DTE operating parameters to configure testing and dialing options and to enter a manual command This menu branch is divided into several chapters for easier reference The division includes a brief overview chapter followed by a separate chapter for each of the five sub menus of the CONFIG branch Configuring Network Options on page 5 1 Configuring DTE Options on page 6 1 Configuring Test Options on page 7 1 Configuring Dial Options on page 8 1 and Manual Com mand on page 9 1 Dial DIAL provides manual dialing functions Key in a number to dial select one of the ten stored numbers or redial the last dialed number This menu is available for use only when AT amp T MCI SW56 or US SPRINT SW56 is the selected network type See Dial Selection on page 10 1 for more infor mation 3 2 DSU III ARdc User Manual 61200270L1 20 Chapter 3 Operation Basic Menu Travel Four function keys on the left side of the DSU III ARdc keypad allow the various menu branches to be entered exited and scrolled through The four function keys are defined below Enter Selects a displayed item Up Arrow Scrolls up the sub menu items Down Arrow Scrolls down the sub menu items Cancel Exits back one level from the current branch of the menu To choose a menu item press the corresponding
58. f data transmission The bit error rate is the ratio of received bits that are in error relative to the number of bits received usually expressed in a power of 10 bisync Bisynchronous transmission A half duplex character oriented syn chronous data communications transmission method originated by IBM in 1964 carrier detect CD A signal generated by a DCE a modem or DSU CSU CD informs the DTE device if the DCE is receiving a carrier signal from the line If the CD light is on the device is speaking to another device channel service unit CSU A DCE device used to connect a digital phone line T1 or Switched 56 line coming in from the phone company to either a mul tiplexer channel bank or directly to another device producing a digi tal signal for example a digital PBX a PC or data communications device A CSU performs certain line conditioning and equalization functions and responds to loopback commands sent from the central office A CSU regenerates digital signals monitors them for prob lems and provides a way of testing the digital circuit clocking An oscillator generated signal that provides a timing reference for transmission link A clock provides signals used in a transmission system to control the timing of certain functions The clock has two functions 1 to generate periodic signals for synchronization and 2 to provide a time base controller card The card installed in slot 1 of an ADTRAN SMART 1
59. he fromthe DSU to from DSU to wall jack If telco telco jack or bad a problem persists circuit to telco contact telco provider NO RX Unit detects Bad conductor in Replace telco cable SIGNAL telco cable from from DSU to wall jack If DSU to telco jack or bad circuit to telco a problem persists contact telco provider 61200270L1 20 DSU ARdc User Manual 11 5 Chapter 11 Testing and Troubleshooting Message Meaning Probable Cause Action OOS OOF Unit detects an Telco is having Check remote unit FROM NET Out of Service or problems with Contact telco service Out of Frame DDS circuit or provider condition from the remote unit is telco turned off disconnected CHECK Transmit receive Telco wall jack Switch wire pairs in wall TELCO LINE pair reversal wired incorrectly jack or contact telco detected service provider TEST FROM Telco activated a_ Telco is testing Wait until test is TELCO loopback to test circuit complete or contact the DDS circuit telco service provider DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting Troubleshooting New Installs Before initiating diagnostics on a newly installed unit and or DDS circuit and before contacting ADTRAN Technical Support please check the items in Table 11 2 to ensure the unit is configured properly Table 11 2 Troubleshooting New Installs Configuratio
60. igure 11 17 Figure 12 1 Figure C 1 Figure D 1 xviii Sample Test Status 11 3 Complete Test 11 4 DTE amp Loop Test ks sia ice ier ie Shee se Ne 11 11 Initiating DTE amp Loop 11 11 Loop Only Test 11 12 Initiating a Loop Only 11 13 DTE Only Test 11 14 Initiating a DTE Only 11 14 DTE with Test Pattern 11 15 Initiating a DTE Test with Test Pattern 11 16 Test Pattern 11 17 Initiating a Test Using a Test Pattern 11 18 Initiating Self Test 11 19 54 RDL with Test 11 20 Initiating a Remote 11 20 Examples of Status 1 12 1 DSU to Modem Interconnect C 1 EIA 232 Connector D 1 DSU III ARdc User Manual 61200270L1 20 List of Tables Table 2 1 Table 2 2 Table 2 3 Table 2 4 Table 3 1 Table 5 1 Table 5 2 Table 5 3 Table 5 4 Table 5 5 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Table 6 7 Table 6 8 Table 6 9 Table 6 10 Table 7 1 Tab
61. ircuit 2 EIA 232 DTE interface 3 V 35 High speed DTE interface 4 24 to 48 VDC Power connection Connection 5 Power Switch Used to turn power on or off 61200270L1 20 DSU III ARdc User Manual 3 7 Chapter 3 Operation 3 8 DSU III ARdc User Manual 61200270L1 20 Chapter4 Configuration Overview LOCAL AND REMOTE CONFIGURATION The DSU III ARdc can be configured locally using the front panel or re motely by establishing communications with another DSU The front pan el of the local DSU can then be used to configure the remote DSU During remote configuration the DSU III ARdc prompts for the remote address before continuing to the CONFIGURATION CONFIC menus The CONFIGURATION menu consists of a group of five sub menus relating to a specific interface or function of the DSU III ARdc that requires setup 1 Network Opt Network Interface Parameters 2 DTE Options DTE Interface Parameters 3 Test Options Unit Test Options 4 Dial Options Unit Dialing Options 5 Manual Command ADTRAN Specific Commands The DSU III ARdc contains four different user profiles sets of configura tions options that are stored in read only memory see Default Configura tion Profiles on page B 1 The unitis shipped from the factory with profile number 1 default configuration loaded into the current nonvolatile con figuration memory If profile 1 matches requirements for the system then no additional configuration is required to put the unit into se
62. le 7 2 Table 7 3 Table 7 4 Table 8 1 Table 8 2 Table 9 1 Table 11 1 Table 11 2 Table 11 3 Table 11 4 Table 11 5 Table A 1 Pin Assignments for Telco 2 2 Pin Assignments for Primary EIA 232 Connector 2 4 Pin Assignments for Primary V 35 Connector 2 5 Configuration 2 6 Identification of 3 7 Loop Rate 5 2 Network Address 5 3 Remote Configuration Commands 5 4 Network Type 5 5 Clock Source Commands 5 6 DTE Rate AT Commands 6 2 Scrambler On Off AT Commands 6 2 Data Format 6 5 Transmit Clock AT 6 7 CS Options AT 6 9 Short and Long Delays at Different Operating Speeds 6 10 Anti Stream AT 6 11 CD Options AT 6 12 TR Options AT Commands 6 13 SR Options AT 6 15 Test Timeout AT 7 2 Remote Digital Loopback AT Commands 7 2 EIA Lo
63. m a Remote Test to verify an requiring retransmission of data error free connection between the local and remote unit Run the test using all available test patterns If an external BERT tester is available these additional tests may be per formed DTE amp Loop Test DTE Only Test e Loop Only Test If the unit fails any of these tests or the problem has not been determined contact ADTRAN Technical Support see the back of this manual 11 8 DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting LOCAL UNIT DIAGNOSTICS The local DSU ARdc can perform six different tests see Table 11 3 Table 11 3 Test AT Commands Front AT Description Panel Display Command DTE amp Loop LL amp T10 TD RD and RX TX Loopbacks Loop Only RT amp T11 RX TX Loopback at DTE Interface DTE Only amp T1 TX RX Loopback at Network Interface DTE with TP amp T8 RX RX Loopback with Test Pattern Test Pattern amp T9 Transmit Receive Test Pattern Self Test Z Check Internal Components Resets Unit Exit Test amp TO Stops test returns to data mode TD Customer Transmit Data RD Customer Receive Data TX Network Transmit Data RX Network Receive Data The test patterns shown in Table 11 4 on page 11 10 are available for the DTE WITH TP and TEST PATTERN tests 61200270L1 20 DSU ARdc User Manual 11 9 Chapter 11 Testing and Troubleshooting
64. n DSU Operational Status Possible messages include DATA MODE The unit is ready to pass data if network status is normal UNIT IN TEST The unit is in test Scroll to next status menu for test type DTE COMMAND MODE The unit is in command mode from the DTE AT or V 25 bis In SW56 mode the following messages are possible IDLE The unit is idle waiting for a call or a dial command INCOMING CALL The unit has detected an incoming call DIALING The unit is dialing a number 12 2 DSU III ARdc User Manual 61200270L1 20 Chapter 12 Status Selection DDS Network Status This line of the display shows the current status of the dedicated network interface Possible messages include LOOP IS NORMAL The DSU is connected to the dedicated line No line irregularity detected OPEN LOOP The DDS physical connection has been broken NO RX SIGNAL The DSU III ARdc detects sealing current but no receive signal CHECK TELCO LINE The DSU III ARdc detects a possible reversal in the Rx and Tx pairs OOS OOF FROM NET The DSU III ARdc detects an abnormal condition code from the network NO FRAME SYNC The DSU III ARdc cannot sync on the signal from the telco 64k mode only TEST FROM TELCO The DSU III ARdc is in a test initiated from the telco Scroll to next status menu for test type RATE ADAPTING The DSU III ARdc is attempting to determine the loop rate provided from the telco 61200270L1 20 DSU ARdc User Manual 12
65. n Option Selection Action Item to Check DTE Type EIA 232 or V 35 From the CONFIG menu select the type of DTE interface option to connect to the DSU CSU Loop Rate Auto 2 4 to 64 kbps From the CONFIG menu select the DDS loop rate of the DDS circuit Data Format Async or Sync From the CONFIG menu select the type of data to be used DTE Cable N A Verify DTE cable connection to the proper DTE connector on the DSU CSU Telco Cable N A Verify the telco cable is securely connected to the DSU CSU and wall jack Power the unit Off N A Verify the unit passes self test and then On during power up displayed on the LCD After verifying the items listed in Table 11 2 the unit should operate prop erly and display the following DATA MODE LOOP IS NORMAL If a status message other than DATA MODE LOOP IS NORMAL is shown begin performing diagnostics described in the following section 61200270L1 20 DSU ARdc User Manual 11 7 Chapter 11 Testing and Troubleshooting Troubleshooting New Installs or Existing Circuits If your DSU then is suspected of having problems perform a Self Test to determine whether the unit is in good health is receiving excessive errors requiring perform a DTE with Test Pattern Test retransmission of data to determine if the unit s internal transmitter and receiver is operating error free continues to receive excessive errors perfor
66. nc Option Character Format Data bits 7 e Parity bit Odd Command Structure SYN SYN STX V 25 bis COMMAND ETX Asynchronous Option Character Format e Start bit 1 e Data bits 7 e Parity bit Even e Stop bit 1 Command Structure V 25 bis COMMAND CR LF Command Descriptions The ADTRAN V 25 bis command setis a subset of the CCITT V 25 bis com mand set In addition to the CCITT commands supported ADTRAN has added configuration commands for both local and remote DSUs The ADTRAN V 25 bis command set follows 2 8 DSU III ARdc User Manual 61200270L1 20 Chapter 2 Installation CIC Connect incoming call CNL Configuration local CNR Configuration remote CRN Call request with number CRS Call request using stored number DIC Disregard incoming call PRN Program number RLN Request list of numbers The following list contains possible responses to V 25 bis commands VAL Valid V 25 command processed CFIET Call failed on switched network busy detected CFIDE Call failed on switched network no wink detected CFINS Call failed no dial string in specified register INVCU Unknown command detected INVPS Invalid parameter syntax INVPV Invalid parameter value INVBL Invalid local password INVBM Invalid remote password INC Incoming call CNX Call connected If verbose wordy responses are disabled ATVO the following list of three character responses are the only ones returned VAL V
67. nc and async 2 DTE 4 8K 4 rate 4 8K sync and async 3 DTE 9 6K 5 rate 9 6K sync and async 4 DTE 19 2K 6 rate 19 2K sync and async 5 DTE 38 4K K7 DTE rate 38 4K sync and async 6 DTE 56K 57 6K 8 rate 56K sync or 57 6K async 7 SAME AS LOOP 9 rate same as loop speed If the DSU III ARdc is set for a loop rate of 64 kbps and SAME As Loop is selected then SCRAMBLER ON OFF options are available as shown in Fig ure 6 1 on page 6 1 The factory default setting is SCRAMBLER OFF Table 6 2 shows the equivalent AT commands for setting SCRAMBLER ON OFF for 64 kbps loop rates Table 6 2 Scrambler On Off AT Commands Front AT Description Panel Command 1 SCRAMBLER OFF _FO DTE data scrambler disabled 2 SCRAMBLER ON _ 1 data scrambler enabled 3 SUPPRESS LBE _F2 LBE codes from DTE suppressed 64 kbps only For 64 kbps clear channel operation there is a possibility that the DTE data sequences might mimic network loop maintenance functions and erroneously cause other network elements to CAUT activate loopbacks To prevent this the SCRAMBLER ON or SUPPRESS LBE option should be selected for both the local and remote DSU III ARdc For loop rates of 2 4 9 6 19 2 and 38 4 kbps the DTE rates shown in Figure 6 2 on page 6 3 are available 6 2 DSU III ARdc User Manual 61200270L1 20 Chapter 6 Configuring DTE Options 1 DTE RATE 1 SAME AS LOOP 2 1 2K 2 CON
68. ntrol signals so communication can begin data terminal equipment DTE In the EIA 232C standard specification the 232 is con nected between the DCE and a DTE The main difference between the DCE and the DTE is that pins two and three are reversed 61200270L1 20 DSU ARdc User Manual F 3 Appendix F Glossary dB Decibel A unit of measure of signal strength usually the relation between a transmitted signal and a standard signal source DTE to loop rate matching A feature designed into ADTRAN DSU CSU products that allows slower DTE devices to communicate over 56 64 kbps digital circuits DTR Data terminal ready A control signal sent from the DTE to the DCE that indicates the DTE is powered on and ready to communicate EIA 232 A set of standards specifying various electrical and mechanical char acteristics for interfaces between computers terminals and modems Defines the mechanical and electrical characteristics for connecting DTE and DCE data communications devices It defines what the interface does circuit functions and their corresponding connector pin assignments The standard applies to both synchronous and asynchronous binary data transmission EIA 366 An EIA interface standard for autodialing FCC part 15 of class A Radiated and conducted emissions standards set for commercial and industrial use FCC part 15 of class B Radiated and conducted emissions standards set for residential use FCC part 68
69. number or alpha charac ter on the keypad press Shift to activate alpha characters The item flash es to show it is the currently selected active choice Pressing either the up or down arrow scrolls through the available menu items Pressing En ter selects the flashing item The following example and Figure 3 1 on page 3 4 illustrate how to select the DSU III ARdc Loop Rate option 1 Select CONFIGURATION CONFIG by pressing 3 and then pressing Enter 2 Select LOCAL or REMOTE test by pressing the corresponding number and then pressing Enter 3 Use the up and down arrows to view sub menu items Choose an item on the sub menu such as NETWORK OPTIONS NET WORK OPT 5 select NETWORK OPT press 1 and then press Enter 6 select Loop RATE options press 1 and then press Enter The current network loop rate is flashing Scroll up or down to view possible options To select a new loop rate press the corresponding number and then press Enter 61200270L1 20 DSU ARdc User Manual 3 3 Chapter 3 Operation 1 LOOP RATE 2 N ETW ORK ADDR 3 REMOTE CONFIG 4 N ETW ORK TYPE 5 CLOCK SOURCE 1 LOCAL J1 NETWORK OPT 2 REM OTE 3 TEST O PTION S 4 DIAL O PTIO 5 5 MANUALCOMMAND Figure 3 1 Example of Basic Menu Travel FRONT PANEL Figure 3 2 shows the DSU III ARdc faceplate Descriptions of each part of the front panel follow the illustration DSU ARdc
70. o send CS 3 6 6 8 AT commands 6 9 clock source 5 5 configuration 2 5 dial backup 8 1 61202013L1 20 DSU ARdc User Manual DTE options 6 1 local 4 1 network options 5 1 test options 7 1 configuration CONFIG 3 2 configuration local CNL 2 10 configuration remote CNR 2 10 connector EIA 232 D 1 connector type 6 4 factory default 6 4 customer service 2 1 D data buffering E 2 data format 6 5 AT commands 6 5 factory default 6 5 data mode 12 2 data set ready SR 12 4 AT commands 6 15 factory default 6 14 data terminal ready 12 4 data terminal ready TR AT commands 6 13 factory default 6 13 DDS network status 12 2 Diagnostics E 2 dial 3 2 dial backup configuration 8 1 dial options 4 1 10 1 dial up operation B 1 Index 1 Index dialing 12 2 digital data service DDS 1 1 5 6 down arrow 3 3 3 5 DSU operational status 12 2 DSU to modem interconnect C 1 DTE amp loop LL 11 10 DTE command mode 12 2 DTE command option 6 6 DTE connectors 3 6 DTE data connection 2 3 DTE interface 3 7 11 1 DTE interface parameters 4 1 DTE only 11 13 DTE options 4 1 DTE rate 6 1 12 4 AT Commands 6 1 factory default 6 1 DTE rate same as the network 6 1 DTE rates for 56 kbps loop rate 6 1 for loop rates of 2 4 38 4 kbps 6 3 for Loop Rates of 2 4 9 6 19 2 and 38 4 kbps 6 3 E EIA local loopback LLB 7 3 AT commands 7 3 EIA remote loopback RLB 7 3 AT commands 7 4 EIA 232 connector D 1
71. of the DTE interface and cable e Provide a loopback for network tests Initiating Follow the menu path outlined in Figure 11 6 to initiate a DTE amp LooP TEST 1 DTE amp LOOP LL 2 LOOP ONLY RT 3 DTE ONLY 4 DTE WITH TP 1 LOCAL UNIT 5 PATTERN 6 SELF TEST 2 TEST 2 REMOTE UNIT Figure 11 6 Initiating a DTE amp Loop Test 61200270L1 20 DSU III ARdc User Manual 11 11 Chapter 11 Testing and Troubleshooting Interpreting Test Results A BERT tester must be used to interpret the test results of a DTE amp Loop test Loop Only RT The LooP ONLY RT test allows the loop interface and a major portion of the DTE interface for the local DSU III ARdc to be tested from the remote site over the actual communication circuit Figure 11 7 illustrates the loopback point and the signal paths for this test LOCAL DSU CSU Local 4 wire Loopback Figure 11 7 Loop Only Test Test Purpose The LooP ONLY test is used to provide a loopback for network tests Initiating Follow the menu path outlined in Figure 11 8 on page 11 13 to initiate a ONLY test 11 12 DSU III ARdc User Manual 61200270L1 20 Chapter 11 Testing and Troubleshooting 1 DTE amp LOOP LL 2 LOOP ONLY RT 3 DTE ONLY 4 DTE WITH TP 1 LOCAL UNIT 5 TEST PATTERN 2 TEST 6 SELF TEST 2 REMOTE UNIT Figure 11 8 Initiating a Loop Only Test Interpreting Test Results The Loop ONLY test
72. one of the numbers listed in the back of this manual viii LIMITED PRODUCT WARRANTY ADTRAN warrants that for ten 10 years from the date of shipment to Customer all products manufactured by ADTRAN will be free from defects in materials and workmanship ADTRAN also warrants that products will conform to the applicable specifications and drawings for such products as contained in the Product Manual or in ADTRAN s internal specifications and drawings for such products which may or may not be reflected in the Product Manual This warranty only applies if Customer gives ADTRAN written notice of defects during the warranty period Upon such notice ADTRAN will at its option either repair or replace the defective item If ADTRAN is unable in a reasonable time to repair or replace any equipment to a condition as warranted Customer is entitled to a full refund of the purchase price upon return of the equipment to ADTRAN This warranty applies only to the original purchaser and is not transferable without ADTRAN s express written permission This warranty becomes null and void if Customer modifies or alters the equipment in any way other than as specifically authorized by ADTRAN EXCEPT FOR THE LIMITED WARRANTY DESCRIBED ABOVE THE FOREGOING CONSTITUTES THE SOLE AND EXCLUSIVE REMEDY OF THE CUSTOMER AND THE EXCLUSIVE LIABILITY OF ADTRAN ANDIS IN LIEU OF ANY AND ALL OTHER WAR RANTIES EXPRESSED OR IMPLIED ADTRAN SPECIFICALLY DISCLAIMS ALL
73. ons Remote DSU Address 0 0 0 0 B 2 DSU III ARdc User Manual 61200270L1 20 Appendix B Default Configuration Profiles Table B 1 Default Configuration Profiles Continued Profile Numbers 00 1 01 2 02 3 03 4 DTE Rate 56 64k loop Same as Same as Same as Same as Loop Loop Loop Loop Scrambler Mode OFF OFF OFF OFF Connector Type V 35 EIA232 EIA232 V 35 DTE Data Format SYNC SYNC ASYNC SYNC DTE Command Options DIS DIS DIS DIS Transmit Clock Normal Normal Normal Normal CS Options Follow RS Follow RS Forced On Follow RS Anti stream Timer Timer Off Timer Off Timer Off Timer Off CD Options Normal Normal Forced On Normal TR Options Ignored Ignored Ignored Idle When Off SR Options Off Off Off Off Test OOS Test OOS Test OOS Test OOS Test Options Test Timeout Off Off Off Off RDL En Dis RDL RDL RDL RDL Accepted Accepted Accepted Accepted EIA Controlled LLB Disable Disable Disable Disable EIA Controlled RLB Disable Disable Disable Disable Dial Options Auto Answer Enable Enable Enable Enable 61200270L1 20 DSU III ARdc User Manual B 3 Appendix B Default Configuration Profiles B 4 DSU III ARdc User Manual 61200270L1 20 Appendxc DSU to Modem Interconnect MODEM TAIL CIRCUIT APPLICATION A DSU to modem interconnect diagram for a modem tail circuit applica tion is shown in Figure C 1 6 EIC
74. ons See the appendix DSU to Modem Interconnect on page C 1 for a DSU to modem interconnect diagram for this application The EXTERNAL clock option is also recommended when the EIA 232 con nector is used for 56 kbps and 64 kbps applications A special DSU cable diagram for this application is shown in Appendix D EIA 232 Connector Using this option and special cable eliminates data errors caused by exces sive delays in the DTE transmit clock receiver and transmit data driver 61200270L1 20 DSU 1 ARdc User Manual 6 7 Chapter 6 Configuring DTE Options CS Options The CS clear to send OPTIONS menu is used to select one of five different control modes for the CS lead Figure 6 7 shows the menu path used to access the CS OPTIONS menu The default factory setting is FOLLow RS with CS DELAY SHORT 1 N ETW O RK OPT 1 DTE RATE 2 CON N ECTO TYPE 3 DATA 4 DTE CMD OPTION 5 TRAN SMIT CLO CK 1 FORCED ON 1 CS DELAY SHORT 2 CS DELAY LONG 2 DTE OPTIONS 6 CS OPTIONS 3 FOLLOWS CD AN TI STREAM M FOLOWS RS4CD 5 DELAY SHORT j8 CD OPTIONS b OFFWITHIOCD 2 CS DELAY LONG 9 TR O PTION S 5 OPTIONS 3 TEST OPTION S 4 DIAL O PTION S D MANUALCOMMAND Figure 6 7 Selecting CS Options If one of the options chosen involves request to send RS then the delay from RS to CS must be selected Table 6 5 on page 6 9 shows the AT Com mands used to set the CS OPTIONS 6 8 DSU III ARdc User Manual 6
75. phone company for leased line facilities Service Type Digital Facility Service Order Network Interface Code Code Jacks 2 4 kbps Digital Interface 04DU5 24 6 0F RJ 48S 4 8 kbps Digital Interface 04DU5 48 6 0F RJ 48S 9 6 kbps Digital Interface 04DU5 96 6 0F RJ 48S 19 2 kbps Digital Interface 04DU5 19 6 0F RJ 48S 38 4 kbps Digital Interface 04DU5 38 6 0F RJ 48S 56 kbps Digital Interface 04DU5 56 6 0F RJ 48S 64 kbps Digital Interface 04DU5 64 6 0F RJ 48S PSDS Type 1 04DU5 56B 6 0F RJ 48S FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY 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 in a residential environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interfer ence to radio frequencies Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Shielded cables must be used with this unit to ensure compliance with Class B FCC limits Changes or modifications to this unit not expressly ap CAUT proved by ADTRAN will void the user s authority to operate the equipment CANADIAN EMISSIONS REQUIREMEN
76. r both local and remote configura tion These methods are shown in Table 2 4 Table 2 4 Configuration Methods Method Local Remote Commands Yes Ye V 25 Commands Yes Yes Front Panel Yes Yes No Ys AT Commands The DSU III ARdc can be configured and controlled with in band AT com mands from an asynchronous DTE port just as modems are To exit the data mode and enter the command mode the asynchronous DTE device must transmit a proper escape sequence or three pluses to the DSU III ARdc A specified time delay must occur between the last data character and the first escape 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 se 2 6 DSU III ARdc User Manual 61200270L1 20 Chapter 2 Installation quence 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 Once the command mode is entered AT commands can be transmitted to the DSU IIT ARdc to configure most of the options or initiate tests to check both the DSU III ARdc and the network connections All command lines must begin with the AT character et in either capital or lower case letters The command line may contain a single command or a series of com mands after the AT attention code When a series of comm
77. r is shut off out of band Signaling that is separated from the channel carrying information voice data video etc Typically the separation is accomplished by a filter The signaling includes dialing and other supervisory signals 61200270L1 20 DSU ARdc User Manual F 5 Appendix F Glossary parity bit A binary bit appended to an array of bits to make the sum of all the bits always odd or always even point to point A private circuit conversation or teleconference in which there is one person at each end usually connected by some dedicated trans mission modem read only memory ROM A memory device which is programmed at the factory and whose contents thereafter cannot be altered remote configuration A feature designed into ADTRAN DSU CSU products that allows a remote DSU CSU to be configured from a local DSU CSU or VT 100 compatible terminal scrambler A device that transposes or inverts signals or otherwise encodes a message at the transmitter to make it unintelligible at a receiver not equipped with an appropriately set descrambling device synchronous data link control SDLC A bit oriented synchronous communications protocol devel oped by IBM where the message may contain any collection or sequence of bits without being mistaken for a control character service The provision of telecommunications to customers by a common car rier administration or private operating agency using voice data and or video
78. ration with a V 35 connector Profile 2 Use profile 2 for a 56 kbps synchronous point to point or dial up opera tion with an EIA 232 connector Profile 3 Use profile 3 for a SW56 asynchronous operation with CS and CD forced on Profile 4 Use profile 4 for a SW56 operation with DTR idle when off 61200270L1 20 DSU III ARdc User Manual B 1 Appendix B Default Configuration Profiles Table B 1 Default Configuration Profiles Profile Numbers 00 1 01 2 02 3 03 4 Manual Command Escape Character 43 2BH 43 2BH 43 2BH 43 2BH CR Character 13 0DH 13 0DH 13 0DH 13 0DH LF Character 10 0AH 10 0AH 10 0AH 10 0AH BS Character 8 8 8 8 SW56 Abort Call Timer 50 32H 50 32H 50 32H 50 32H Escape Guard Timer 50 32H 50 32H 50 32H 50 32H Command Echo Enable Enable Enable Enable Result Code Enable Enable Enable Enable Long or Short Code Long Long Long Long Test Pattern Type 2047 2047 2047 2047 CS Delay Short Short Short Short DTR Recog Delay 3 3 3 3 x2 5ms DTR Command Timeout 8 8 8 8 x1 sec Front Panel En Dis Enable Enable Enable Enable AT Password Control Disable Disable Disable Disable Network Options Loop Rate AUTO AUTO 56k AUTO Network Address 0 0 0 0 Remote Conf En Dis Enable Enable Enable Enable Network Type Dedicated Dedicated AT amp T MCI AT amp T MCI SW56 SW56 Clock Source From From From From Network Network Network Network DTE Opti
79. 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 Users should not attempt to make such connections CAUT themselves but should contact the appropriate electric inspection authority or an electrician as appropriate 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 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 vii WARRANTY AND CUSTOMER SERVICE ADTRAN will replace or repair this product within five years from the date of shipment if it does not meet its published specifications or fails while in service For detailed warranty repair and return information refer to the ADTRAN Equipment Warranty and Repair and Return Policy Procedure Return Material Authorization RMA is required prior to returning equipment to ADTRAN For service RMA requests or further information contact
80. rvice If profile 1 does not match system requirements it can be modified or one of the other profiles that more closely matches the system requirements can be loaded into current memory When a different profile is loaded or the existing profile is modified it is stored in the current nonvolatile config uration memory The DSU III ARdc is then configured with that profile every time power is turned on or until the unit is reset 61200270L1 20 DSU ARdc User Manual 4 1 Chapter 4 Configuration Overview For detailed information on configuration see Configuring Network Options on page 5 1 Configuring DTE Options on page 6 1 Configuring Test Options on page 7 1 Configuring Dial Options on page 8 1 and Manual Command on page 9 1 A complete Configuration menu is shown in Figure 4 1 4 2 DSU III ARdc User Manual 61200270L1 20 Chapter 4 Configuration Overview 2 N ETW ORK ADDR Options vary according 3 REMOTE CONFIG i DisaBuED 2 EN ABLED 4 ORK TYPE 1 DEDICATED 3 DATA FORMAT l1 ASYNCHRO NOUS 1 5 9 BITS 2 AT amp T MCI SW56 2 05 2 ASYNC 10 BITS 3 US SPRINT SW56 3CASYNC 11 BITS 2 EN ABLED 1 46 NORED WITH 2 DLE WHEN OFF 3 OFF ON DIAL 1 a OFF ON DIAL 2 JA SR OPTIONS 1 FORCED ON OOS ONLY 3 O FF LOCD ONLY 4 0 FF TEST ONLY 5 TEST 005 6 T
81. s see Table 11 5 Table 11 5 Remote Tests and AT Commands Front AT Description Panel Command 122047 PATTERN TO amp T7 Standard 2047 random data pattern 2 511 PATTERN _T1 amp T7 Standard 511 random data pattern 3 STRESS PTRN 1 _T2 amp T7 DDS Stress Pattern 1 4 STRESS PTRN 2 _T3 amp T7 DDS Stress Pattern 2 5 STRESS PTRN 3 _T4 amp T7 DDS Stress Pattern 3 6 STRESS PTRN 4 _T5 amp T7 DDS Stress Pattern 4 7 DATA FROM DTE amp T6 Data from DTE The REMOTE UNIT submenu allows a remotely installed DSU to be placed into loopback There are six test patterns to choose from or Data from the DTE may be selected 61200270L1 20 DSU III ARdc User Manual 11 19 Chapter 11 Testing and Troubleshooting LOCAL DSU CSU REMOTE DTE DSU CSU Tx 4 Tx gt Tx 1 Rx EE Rx Error Test Pattern Clear Detector Local Unit Initiates Test Figure 11 16 V 54 RDL with Test Pattern Test Purpose Test the local DSU the DDS circuit and remote DSU Initiating Follow the menu path outlined in Figure 11 17 to place a remote DSU III ARdc into loopback 122047 PATTERN 1 LOCAL UNIT 2 511 PATTERN 2 TEST ENTER TEST UNIT 3 STRESS PTRN 1 2 REMOTE UNIT ADDRESS 0 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 7 DATA FROM DTE Figure 11 17 Initiating a Remote Test 11 20 DSU ARdc User Manual 61200270L1 20 Chapter
82. s match service rates DTE to loop rate matching in both dedicated and switched modes Synchronous rates 1 2 2 4 4 8 9 6 19 2 38 4 56 and 64 kbps Asynchronous rates 1 2 2 4 4 8 9 6 19 2 38 4 and 57 6 kbps FCC Approval FCC part 15 class A and part 68 DTE Interfaces Both EIA 232 and V 35 electrical and physical DTE interfaces 61200270L1 20 DSU III ARdc User Manual E 1 Appendix E Specifications Summary Data Buffering Internal slack buffer Clocking Normal DDS or private network tributary slaved to network receive clock Private network master internal clock Normal DDS with tail circuit Private network master slaved to external clock Switched Mode Dialing Options Stored number Front panel keypad DTR dialing of stored number In band AT commands V 25 bis in band dialing Diagnostics Network CSU and DSU loopbacks User Local DTE and loop remote V 54 Test Patterns 2047 511 DDS stress patterns 1 to 4 Line Requirements Loop transmission parameters as defined in AT amp T PUB 62310 Dedicated DDS AT amp T PUB 41468 Switched 56 SPRINT TS 0046 Switched 56 E 2 DSU III ARdc User Manual 61200270L1 20 Appendix E Specifications Summary Line Interface 485 4 wire full duplex Receiver Sensitivity 45 dB at all rates Environment Operating Temperature 0 to 50 C 32 to 122 F Storage Temperature 20 to 70 C 4 to 158 F Relative Humidity Up to 95 noncondensing Dim
83. s the display to the MAIN menu During a test the Quick key returns to the top of the TEST menu In SW56 operation if the unit is not in test the Quick key returns to the DIAL menu 61200270L1 20 DSU ARdc User Manual 3 5 Chapter 3 Operation LED Description The DSU III ARdc has seven LED indicators RS CS TD RD CD ALM and TST These LEDs are identified as follows RS Request to Send CS Clear to Send TD Transmit Data RD Receive Data CD Carrier Detect ALM Alarm Indication TST Test Mode Manual REAR PANEL The rear panel contains two DTE connectors which provide a V 35 or EIA 232 connection An 8 pin telco jack a DC power connector and a power switch are also located on the rear panel Pin assignments for the DTE and network connections are listed in Installation on page 2 1 The DSU III ARdc rear panel is shown in Figure 3 3 on page 3 7 Table 3 1 on page 3 7 defines the numbers used in Figure 3 3 3 6 DSU III ARdc User Manual 61200270L1 20 Chapter 3 Operation EIA 232 0000000000000 3 V 35 ooooooooo 20000000 oooooooo 24 48VDC 0 4A 3 Figure 3 3 DSU III ARdc Rear View Table 3 1 Identification of Numbers Number Item Function 1 Telco Connection Connection to the dedicated c
84. st 11 18 shift 3 5 status 3 2 synchronous operation 11 1 T telco jack 3 6 test 3 2 DTE only 11 13 self 11 18 test pattern 11 16 test commands 11 9 test from telco 12 3 12 4 test mode manual 3 6 test options 4 1 configuration 7 1 test pattern 11 16 test timeout 7 1 AT commands 7 2 transmit clock 6 7 D 1 AT command 6 7 transmit data 3 6 troubleshooting new installs 11 7 U unit dialing options 4 1 unit test options 4 1 up arrow 3 3 3 6 user profiles 4 1 V V 25 bis commands 2 7 11 1 asynchronous option 2 8 bi sync option 2 8 SDLC option 2 7 Index 3 Index V 35 connector 2 3 W VALA 2 9 warranty 1 2 Index 4 DSU ARdc User Manual 61202013L1 20 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 the Customer and Product Service CaPS department to issue an RMA number For information regarding equipment currently in house or possible fees associated with repair contact CaPS directly at th
85. st is followed by the VAL response 2 12 DSU 1 ARdc User Manual 61200270L1 20 Chapter3 Operation MENU STRUCTURE The DSU III ARdc uses a multilevel menu approach to access its many fea tures All menu operations are displayed in the LCD window The opening menu is the access point for all other operations There are four MAIN menu branches STATUS TEST CONFIGURATION and DIAL Each MAIN menu item has several functions and sub menus to identify and access specific parameters LCD Display of the Main Menu 1 STATUS 2 TEST 3 CONFIG 4 DIAL The DIAL option is only available when the unit is configured for Win a Switched 56 network type For more information see Dial Selection on page 10 1 Main Menu The following paragraphs briefly describe the MAIN menu s four branches More detailed information is provided in the individual chapters for each branch 61200270L1 20 DSU 1 ARdc User Manual 3 1 Chapter 3 Operation Status STATUS is used to display all relevant information for the network and DTE interfaces It displays the current operating mode loop status rate of service from the network DTE data rate and format and DTE interface lead status The display returns to the status menu when the front panel is not accessed Refer to Status Selection on page 12 1 for more detailed in formation Test TEST is used to control local and remote testing Select LOCAL or REMOTE testing and select the type of test and t
86. technologies simple network management protocol SNMP A control and reporting scheme widely used to manage devices from different vendors SNMP operates on top of the Internet protocol F 6 DSU III ARdc User Manual 61200270L1 20 Appendix F Glossary start bit In asynchronous data communications characters are sent at arbi trary intervals In order for the computer to make sense of what is coming in each character starts its transmission with a start bit This way if the first bit of the character to be transmitted is a 0 the fact of receiving a start bit always a 1 tips off the computer that the next bit is part of a transmitted character and not just part of the inter charac ter gap See stop bit stop bit The stop bit is an interval at the end of each asynchronous character that allows the receiving computer to pause before the start of the next character The stop bit is always a 0 See start bit switched In regard to DSU CSUs the ability to perform the functions of estab lishing and releasing connections on a per call basis between two or more circuits services or communications systems The DSU III S2W and DSU III S4W are examples of Switched 56 DSU CSUs synchronous Communications in which the timing is achieved by sharing a single clock Each end of the transmission synchronizes itself with the use of clocks and information sent along with the transmitted data tail circuit A feeder circuit which may be digital
87. tion of the remote unit Responses to the CNR com mands are returned in the data format currently configured Possible re sponses include VAL and INVn 2 10 DSU III ARdc User Manual 61200270L1 20 Chapter 2 Installation Switched 56 Operation CRN Call Request with Number When the DSU III ARdc is configured for SW56 operation the CRN com mand causes the DSU to dial the supplied number The command s for mat follows CRN NUMBER TO BE DIALED If no number is included in the command the number stored in dial reg ister number 1 is dialed If no number is provided and no number is stored in dial register number 1 the DSU III ARdc responds with the call failure indication CFINS Call Failure Indication Not Stored CRS Call Request Using Stored Number The CRS command causes the DSU III ARdc to dial the number stored in the specified register The format of this command is as follows CRS OPTIONAL SPACE REGISTER NUMBER 1 10 If this command is issued without the register number parameter the IN VPS Invalid Parameter Syntax response is issued If this command is is sued and the register parameter is not in the valid range for dialing registers the INVPV Invalid Parameter Value response is returned Oth er responses include VAL CNX and CFIxx DIC Disregard Incoming Call This command causes the V 25 bis processor to return to command mode even if there is an incoming
88. uivalent AT commands for setting the TEST TIMEOUT 61200270L1 20 DSU ARdc User Manual 7 1 Chapter 7 Configuring Test Options Table 7 1 Test Timeout AT Commands Front AT Description Panel Command ENTER TIMEOUT 18 x Specify 0 255 seconds test timeout Remote Digital Loopback The RDL Remote Digital Loopback option specifies whether or not the DSU III ARdc responds to an RDL request from the far end of the circuit The factory default setting is RDL ACCEPTED Figure 7 2 shows the menu path used to access this option 1 N ETW O RK TYPE 2 DTE OPTIONS 1 TEST TIM EO UT 3 TEST OPTIONS 2 RDL EN DIS 1 RDL IG N O RED 2 RDL ACCEPTED 1 LOCAL 2 REMOTE JENTER ADDRESS 4 OPTIONS 5 M AN UAL 4 EIA RLB EN DIS Figure 7 2 Remote Digital Loopback Table 7 2 shows the equivalent AT commands for setting the RDL option Table 7 2 Remote Digital Loopback AT Commands Front AT Description Panel Command 1 RDL IGNORED amp T5 RDL requests from remote DSU ignored 2 RDL ACCEPTED amp T4 RDL requests accepted 7 2 DSU III User Manual 61200270L1 20 Chapter 7 Configuring Test Options EIA Local Loopback The EIA LLB Electronics Industries Association Local Loopback option specifies whether or not the DSU ARdc responds to the LLB input from the DTE The factory default setting is DISABLED Figure 7 3 shows the menu path used to access
89. umber 2 11 RLN Request List of Numbers 2 12 Chapter 3 Operation Menit Structure eS Oe 3 1 LCD Display of the Main Menu 3 1 Mam Ment a s hereto oet te Pared 3 1 do Eno odo Bat Aue Me ELM Tube ORTA o Sec D e A s 3 2 ode eese ate Ead Ns 3 2 Configuration CONFIG 3 2 Rte e 3 2 Basic Menu Travel 1 3 3 Front ENGL VS DM A DEM 3 4 WiIndOW a uni au oma IRL ex ES 3 4 ETET Levi aee us e Ep E M E en quet dert duas 3 4 Up and Down Arrows 3 5 Cancel 5 eee CIS eric aa A Eee eco PA as 3 5 Numeric Keypad riarena hart aeae gia Stra Satie ee Ae Ret 3 5 SE ou erre td Mee e 3 5 Quick Lert Oe oo e maed iA MA oerte a ser Lato tee eA 3 5 Description p vega eger ete te aestu 3 6 Rear Panel 0 22232 poe cet wath tony da ve e e ten antes 3 6 Chapter4 Configuration Overview Local and Remote Configuration 4 1 Chapter5 Configuring Network Options Network Optiotis cuocere eR ERN Eds 5 1 Rate as iter tasked pre itr eek ES Here reda 5 1 Network Address ep uere Rau eiu Cuni hae gue 5 3 Remote Configuration
90. y of applications To insure a reli able connection the unit features an extended receiver capability which permits operation over long loops 3 4 miles or 5 5 km of 26 AWG at 56 kbps The unit supports Switched 56 4 wire service with dialing accomplished from the front panel This model is compatible with AT amp T Accunet and Sprint SW56 type services Figure 1 1 on page 1 2 shows a sample point to point application for the DSU III ARdc 61200270L1 20 DSU ARdc User Manual 1 1 Chapter 1 Introduction DSU ARdc Router Figure 1 1 Sample Point to Point Application for DSU III ARdc DDS Overview DDS is a nationwide service that allows interconnection and transport of data at speeds up to 64 kbps The local exchange carriers provide the local loop service to DDS customers and may provide data for routing Inter LATA to an interexchange carrier In DDS mode the DSU III ARdc sup ports all DDS service rates yielding DTE rates of 1 2 2 4 4 8 9 6 19 2 38 4 sync or async 56 and 64 kbps An additional rate of 57 6 kbps is available in async mode At the service rates of 56 kbps and 64 kbps the unit can be configured to run slower DTE rates async or sync 4 Wire Switched 56 Overview This switched 4 wire DDS allows customers to pay for data connection only for the time the unit is active The regional operating companies pro vide the 4 wire local loop service to SW56 customers In SW

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