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DSU III AR User Manual

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1. 5 CLOCK SOURCE 3 TEST OPTIONS 5 MANUAL COMMAND Figure 5 4 Setting Network Type Options Table 5 D shows the equivalent AT commands that perform the same configuration functions Table 5 D Network Type Commands Front AT Description Panel Command Scrip 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 When AT amp T MCI SW56 or US SPRINT SW56 is selected the Main Y iy menu displays the DIAL selection CAUTION 36 DSU Ill AR User Manual 61202 011L1 1 Chapter 5 Configuring N etwork O ptions Clock Source The CLOCK SOURCE options specify the timing source for the DSU III AR s internal circuitry The factory default setting is FROM NETWORK see Figure 5 5 5 CLOCK SOURCE 1 MASTER 2 FROM NETWORK 2 DTE OPTIONS 3 TEST OPTIONS 2 REMOTEJENTER ADDRESS 4 DIAL OPTIONS 5 MANUAL COMMAND 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 AR must be set for MASTER and the other set for FROM NETWORK Table 5 E shows the equivalent AT commands for setting the clock source Select Master timing only if the circuit has no timing source for Lc example two DSUs and a crossover cable CAUTION Table 5 E Clock Source Commands Front AT 1 MASTER DSU is the
2. sr de etui ne 25 Chapter 4 Configuration Overview Local and Remote Configuration sense ESHTE ent IRE idonee 27 Chapter 5 Configuring Network Options Network ODtEODS 2 sn terrere pet Here dete odore rap eese 31 WOOP RATS ca eto atero nedum aime and eit Nene ccena 31 Network Address 34 Remote Com sara Te eee dritto meer ect pe te bere EHE T eee 35 Network Type e AQ 36 Clock SOUTC ss enti 37 Chapter 6 Configuring DTE Options DTE Options sn Heer n eremo be be dots demie eee 39 DTE RATS ore reer ee mener en eee etienne 39 Connector Ty S 43 Data Format ARR ot nea e a ion it e eo one merite 44 DTE Command Opbonstetassccaacscteasscrsecticsssacuers coat optet eere tet nare rael 45 ii DSU Ill AR User Manual 61202 011L1 1 Table of Contents Transmit Clock erae e itm decree ra nee ras ee hist 46 6 TT sequis arare ne EEEE 48 P Waco AMD M 50 CID OP POMS e 51 je E 52 SR OPHONS 54 Secondary Rate EEE Rene inerte t a rene terne 55 Chapter 7 Configuring Test Options TRS OPON S nn nn men annee nee ist 57 Test MEOT eanga rr e ebore ain ost ud ip mini met atteintes 57 Remote Digital Loopback eter ertt er ete eniin en 58 ELA Local Loopback edere mnt n SOR EE Res 59 BIA Remote Loopback ocn tee EEEE annees 60 Chapter 8 Configuring Dial Options Dial OP ORNS ES ed ra eee eta nee tar encarta net ire 61 Ph
3. 31 Remote Loopback RL 25 Testindicator m DSU III AR User Manual 61202 011L1 1 61202 011L1 1 Chapter 2 Installation Table 2 C Pin Assignments for Primary V 35 Connector Pin cam Description B8 102 Signal Ground 6 D 106 jClartoSend CS O ived Line Signal Detector CD R 104 Received Data DA 104 Received Data RD B 115 Receiver Signal Element Timing SC R B P 103 Transmitted Data SDA NN Jresthdicatr M DSU III AR User Manual 9 Chapter 2 Installation SECONDARY CHANNEL CONNECTION If used the secondary DTE should be connected to the auxiliary EIA 232 connector The pinout for the connector is shown in Table 2 D Table 2 D Pin Assignments for Auxiliary ELA 232 Connector Pin cer Description Protective Ground PG Transmit Data TD Receive Data RD 4 CA Requestto Send RS CC 5 CB Clear to Send CS 6 CC Data Set Ready SR On all the time Signal G round SG 8 CF Received Line Signal Detector CD On all the time CONFIGURATION 10 The DSU III AR contains four different user profiles sets of configurations options that are stored in read only memory These profiles are listed in the appendix Default Configuration Profiles The unit is shipped from the factory with profile 1 default configuration loaded into the nonvolatile configuration memory If profile 1
4. 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 Verify integrity of the DTE interface and cable Provide a loopback for network tests 61202 011L1 1 DSU III AR User Manual 79 Chapter 11 Testing Initiating Follow the menu path outlined in Figure 11 6 to initiate a DTE amp Loop Test 1 DTE amp LOOP LL 2 LO 0 P ONLY RT 3 DTE ONLY 4 DTE WITH TP 5 TEST PATTERN 6 SELF TEST 1 LOCAL UNIT 2 REMO TE UNIT Figure 11 6 Initiating a DTE amp Loop Test Interpreting Test Results A BERT tester must be used to interpret the test results of a DTE amp Loop test 80 DSU Ill AR User Manual 61202 011L1 1 Chapter 11 Testing 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 AR 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 Interface 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 to initiate a Loop Only test 61202 011L1 1 DSU III AR User Manual 81 Chapter 11 Testing 1 DTE amp LOO P LL 2 LOOP ONLY RT 3 DTE ONL
5. 2 AT COMMAND SET 2 DTE OPTIONS 3 V 25 SYNC 4 V 25 BSC ASYNC 1 LOCAL 5 TRAN SMIT CLOCK 3 CONFIG 6 CS OPTIONS 2 REMOTEJENTER ADDRESS 7 AN TI STREAM 8 CD OPTIONS 9 TR OPTIONS 3 TEST OPTIONS A SR OPTIONS 4 DIAL OPTION S B SECO N DARY RATE 5 MANUAL COMMAND Figure 6 5 Selecting DI E Command Option When the unit is in DTE CMD OPTION mode idle in SW56 mode forced with TR option or from escape sequence in AT mode with AT COMMAND SET or V 25 SYNC selected the DTE format is indepen dent of the DATA FORMAT option However if V 25 BSC ASYNC is selected the unit will use V 25 BISYNC BSC commands for synchro nous data format or V 25 ASYNC commands for asynchronous data format NOTE 61202 011L1 1 DSU III AR User Manual 45 Chapter 6 Configuring DTE O ptions Transmit Clock The TRANSMIT CLOCK option is used to select the source of the clock used to transfer data from the DTE into the DSU III AR Figure 6 6 shows the menu path used to set the TRANSMIT CLOCK option 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 4 DTE CMD OPTION 1 NORMAL 5 TRANSMIT CLOCK 2 EXTERN AL 2 DTE OPTIONS 6 CS OPTIONS 7 ANTI STREAM 8 CD OPTIONS 1 LOCAL 2 REMOTE JEN TER ADDRESS 3 TEST OPTIONS A SR OPTIONS B SECON DARY RATE 5 MANUAL COMMAND Figure 6 6 Transmit Clock Options Table 6 D shows the AT commands used to set the Transmit Clock option Tabl
6. A The unit is shipped from the factory with profile 1 loaded into the nonvolatile configuration memory See the chapters Installation and Manual Command for more information Profile 1 Profile 1 is configured for a 56 kbps synchronous point to point or dial up operation with a V 35 connector Profile 2 Use profile 2 for a 56 kbps synchronous point to point or dial up operation with an ELA 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 61202 011L1 1 DSU III AR User Manual 99 Appendix B Default Configuration Profiles Table B A Default Configuration Profiles Profile Numbers Escape Character 43 2BH 43 2BH 43 2BH 43 2BH R Character 13 0DH 13 0DH 13 0DH 13 0DH LF Character 10 0AH 10 0AH 10 0AH 10 0AH a 5 JB S 3 3 y S o S Character o d 1 8 W 56 Abort Call Timer 50 32H 50 32H scape Guard Timer 50 32H 50 32H ommand Echo Enable Enable Enable Enable Long Long DTR Command Timeout x1 se 8 J 8 8 8 Network Options Network Address o 0 o o0 Network Type Dedicated Dedicated AT amp T MCI SW 56 AT amp T MCI SW 56 DTE Options Remote DSU Address o J 0 o 0o 100 DSU III AR User Manual 61202 011L1 1 Appendix B Default Configuration Profiles Table B A Cont d Default Configuration Profiles 00 1 022 23 04 Tes
7. Customer Transmit Data RD Customer Receive Data TX N etwork Transmit Data RX N etwork Receive Data The test patterns shown in Table 11 D are available for the DTE with Test Pattern and Test Pattern tests DSU III AR User Manual 77 Chapter 11 Testing Table 11 D DTE With Test Pattern Commands Front AT inti 1 2047 PATTERN TO amp T8 Standard 2047 random data pattern 2 511 PATTERN _T1 amp T8 Standard 511 random data pattern Stress pattern with alternating high r and low ones densities Repeated Fr RIRES FIRM SL TEST pattern of 100 octets 1111 1111 followed by 100 octets 0000 0000 Stress pattern with alternating medium and low ones densities 4 STRESS PTRN 2 T3 amp T8 Repeated pattern of 100 octets 0111 1110 followed by 100 octets 0000 0000 Stress pattern with medium ones 5 STRESS PTRN 3 T4 amp T8 density Continuous series of octets 0011 0010 Stress pattern with low ones density 6 STRESS PTRN 4 T5 amp T8 Continuous series of octets 0100 0000 78 DSU III AR User Manual 61202 011L1 1 Chapter 11 Testing DTE amp Loop LL Test Description The DTE amp Loop test splits the DSU III AR 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 bidirectional loopback at the DSU CSU Figure 11 5 illustrates the loopback points and the signal paths for this test
8. ED Carrier Detect ALM Alarm Indication TST Test Mode Manual DSU III AR User Manual 61202 011L1 1 Chapter 3 Operation REAR PANEL The rear panel contains three DTE connectors which provide primary channel V 35 or EIA 232 and a secondary channel EIA 232 port auxiliary EIA 232 An 8 pin telco jack a captive power cord and a power switch are also located on the rear panel Pin assignments for the DTE and network connections are listed in the chapter Installation The DSU III AR rear panel is shown in Figure 3 3 AUXILIARY EIA 232 0000000000000 000000000000 PRIMARY V 35 PRIMARY EIA 232 000000000 00000000 e000000000000 6 Ocoo0000000 000000000000 O 00000000 Q 115 VAC 60HZ 15A Identification of Numbers Item Function 1 Auxiliary EIA 232 Secondary channel services 2 Power Switch Used to turn power on or off 3 Telco Connection Connection to the dedicated circuit 4 Primary EIA 232 DTE interface 5 Primary V 35 High speed DTE interface 6 115 VAC Connection Power cord connection Figure 3 3 DSU III AR Rear View 61202 011L1 1 DSU III AR User Manual 25 Chapter 3 Operation 26 DSU Ill AR User Manual 61202 011L1 1 Chapter 4 Configuration Overview LOCAL AND REMOTE CONFIGURATION 61202 011L1 1 The DSU III AR can be configured locally using the front panel or remotely by establishing communications with another DSU The front panel of the local DSU can then be used to configure th
9. n niii ien inei inner 13 Syntax and Possible Responses sise 14 CIC Connect Incoming Call erret eerte 14 ENL Configuration Local teh tm enfer fenes 14 CNR Configuration Remote ssh r E ninss E r NEE NNE S 15 Switched 56 Operation casiscerecsssessssrecssascesescenensassacoodstapsesesenses orepaasessnnencesestaresiertess 15 CRN Call Request withiNumiber aicceen n treten ertet 15 CRS Call Request Using Stored Number sssssssssss 16 DIC Disregard Incoming Call siennes 16 61202 01111 1 DSU III AR User Manual i Table of Contents PRN Program Number nr ethernet tertie 16 RLN Request List of Numbers esee eee nen 17 Chapter 3 Operation Meni STUCI nica an redde terunt ten an anre desees oun a n dis ge 19 LCD Display of the Main Menu 19 IA TSR IDE naa 20 SI r 20 I M 20 Configuration CONFIG suisses 20 ET D 20 Basic Menu Travel tette e Em e ree e UU derriere denses 21 Pront Pahel 2 unten ten a needed 23 ECD Witt OW uc denied 23 END GE sistori tii dte Godin ates cas pedi ee etai tetes d idet 23 Numerie Keypad is oeste aporte fiers dti 23 elm E m eeeusvea E A 24 OUICK e M 24 rule m 24 Upand Down S accettare titine 24 LED Description iie tenemos en E oed ecen e ite ta 24 Reat Panel
10. 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 a Switched 56 network type For more information see the chapter Dial Selection DSU III AR User Manual 19 Chapter 3 Operation Main Menu 20 The following paragraphs briefly describe the main menu s four branches More detailed information is provided in the indi vidual chapters for each branch 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 TR SR LL and RL DTE interface lead status The display returns to the status menu when the front panel is not accessed Refer to the chapter Status Selection for more detailed information Test Test is used to control local and remote testing Select local or remote testing and select the type of test and test pattern when required For more information see the chapter Test Selection Configuration CONFIG Configuration is used to select network and DTE operating parameters 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 Configuring DTE Options Configuring Test Options Configuring Dial Options and Manu
11. synchronous data link control SDLC A bit oriented synchronous communications protocol developed 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 carrier administration or private operating agency using voice data and or video 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 start bit In asynchronous data communications characters are sent at arbitrary 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 116 DSU Ill AR User Manual 61202 011L1 1 Glossary computer that the next bit is part of a transmitted character and not just part of the inter character 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 establishing and releasing connections on a per call basis between two or more circuits services or commun
12. 4 DIAL OPTIONS 5 MANUAL COMMAND Figure 6 10 Selecting TR Options 52 DSU III AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions NOTE 61202 011L1 1 Table 6 I shows the equivalent AT commands for setting TR OPTIONS Table 6 1 TR Options AT Commands Front AT G N O RE amp DO Ignore the TR input IDLE WHEN OFF See the following N ote SW 56 only preme Au SW 56 aa For IDLE WHEN OFF option In SW56 mode TR off will cause the DSU to go On Hook Idle The unit also will not dial out if TR is off In dedicated mode the DSU will go into DTE command mode when TR goes off When TR goes on if the DSU does not receive a command in the number of seconds set in 40 the DSU will go into data mode DSU III AR User Manual 53 Chapter 6 Configuring DTE O ptions SR Options 1 LOCAL 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 OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 2 DTE OPTIONS 4 DTE CMD OPTION 5 TRAN SM IT CLOCK 6 CS OPTIONS T ANTI STREAM 3 CONFIG 8 CD OPTIONS 1 FO RC ED ON 2 REMOTEJENTER ADDRESS 9 TR OPTIONS 2 0 FF OOS ONLY 54 A SR OPTIONS 3 OFF LOCD ONLY 4 OFF TEST ONLY B SECO NDARY RATE 5 0 FF TEST 005 3 TEST OPTIONS 6 0 FF TEST HO CD 4 DIAL OPTIONS 5 M AN UAL Figure 6 11 Setting SR
13. 59 Table 7 D ETA Remote Loopback AT Commands ssssseesseeee 60 Table 8 A AT Command for Storing Phone Numbers 62 Table 8 B AT Commands for Auto Answer cervessa ei 62 Jable9 A Manual Commands eiit pe annee 65 Table 11 A Messages from the DSU CSU ss rne rne 74 Table 11 B Troubleshooting New Installs 75 Table 11 C Test AV Commands seare heeren te riter eterne etaed 77 Table 11 D DTE with Test Pattern Commands sse 78 Table 11 E Remote Tests and AT Commands ssis eE 90 Table A A AT Commands eerte gm enceinte 97 Table B A Default Configuration Profiles sssssssssssseeeeeeenenen 100 List of Figures Figure 1 1 Sample Point to Point Application for DSU III AR 2 Figure3 1 Example of Basic Menu Travel 22 Figure3 2 DSU IILAR Front Viewers immenses 23 Pigure9 3 DSU TILAR Reat View sorserien tenuere e bees 25 Figure 4 1 Complete Configuration Men s serens rip idii ee 29 Figure5 1 Setting Loop Rate Options ss 32 vi DSU III AR User Manual 61202 011L1 1 Table of Contents Figure 5 2 Setting the Network Address esses 34 Figure 5 3 Enabling Disabling Remote Configuration 35 Figure 5 4 Setting Network Type Options ss 36 Figure 5 5 Setting the Clock Source ss 37 Figure 6 1 DTE Rates for 56 or 64 kbps Loop Rate with No Secondary Channel 40 Figure 6 2 DTE Rates for 56 kbps Secondary Channel and 6
14. Appendix E Specifications Summary SPECIFICATIONS AND FEATURES 61202 011L1 1 This section describes the standard specifications and features incorporated in the DSU III AR Operating Modes Dedicated DDS point to point multipoint DDSII DDS with secondary channel 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 rates match service rates DTE to loop rate matching in both dedicated and switched modes Synchronous rates 2 4 4 8 9 6 19 2 38 4 56 and 64 kbps Asynchronous rates 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 DSU III AR User Manual 107 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
15. Chapter 1 Introduction Product Overview En ann ee midi Re ad ilo a es 1 DES OVvVetvieWadlscettt r e nn ne iA bere On ie died 3 4 Wire Switched 56 Overview eese eene nne thats test testante nis 3 Warranty and Customer Service ss cssscssssscesssereseessssarssceseassnsasessssentasnsseresesvescaseatssnssenossooenenss 4 Chapter 2 Installation Unpack Inspect Power U ient dite ee e ES ERE ESERE EN Pe ENE 5 Receipt INSPecti One M M 5 Equipment Provided caetera tede en te beni ERE oe bei rta 5 POWER UP EEE 6 Network Interface Connection ssh 7 DITE Data Connection Primary DIE scsi entre tremere 8 Secondary Channel Connections 10 Ge abu 10 Configuration Methods ennt i oe RETE EE oat huis 11 AT COMMANQS 5h A cisesrscbeusensesencs puted vassusuessieseegiessbsvicpebcendiis 11 V 25 bis Commands e e tres e ete tipi rere ne ner 12 SDLE OPHON T 12 Character Format aine nease utet tee i EuETeg 12 Command 5tr cture tt t ttti etn re estsennte 12 Bi Sync OPHON acne ciem tienden Febre en EA retenir 13 Character POrmal epe leer Intt aie e nn 13 Command 5tru cture oen ibi th du ERE re ERR 13 Asynchronous Option sccsascerssscsessessedesnssesnsassnsascaesosasenseseseasesesssssssebsavescoseseopersestess 13 Character Format eere t eee i entier deerit 13 Commahd5tr ucture seert entente pibe Coa ti pad ined iretur trees 13 Command D scriptions
16. DTE amp LOOP LL 2 LO OP ONLY RT 3 DTE ONLY 1 LOCAL UNIT 5 TEST PATTERN 6 SELF TEST 2 REMOTE UNIT EN TER TEST UN IT ADDRESS 0 Figure 11 2 Initiating a Test Once a test is initiated Please Wait is displayed briefly followed by the status screen DSU III AR User Manual 61202 011L1 1 Chapter 11 Testing Test Status Display The Test Status display appears automatically during a test The Test Status display is similar to the status screen described in the chapter Status Selection with additional prompts for the type of test and the number of errors for tests with a test pattern 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 Use the Up and Down arrows DTE 56K SYNC to display other status screens TR SR LLB RLB OFF OFF OFF OFF UNIT IN TEST LOOPISNORMAL 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 Status 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 Reenters test display 61202 011L1 1 DSU III AR User Manual 71 Chapter 11 Testing 1 DTE
17. EET 7 Table 2 B Pin Assignments for Primary EIA 232 Connector 8 Table 2 C Pin Assignments for Primary V 35 Connector sess 9 Table 2 D Pin Assignments for Auxiliary ELA 232 Connector sees eee eee ee 10 61202 01111 1 DSU III AR User Manual v Table of Contents Table 2 E Configuration Methods ss 11 Table 5 A Loop Rate Commands ss 33 Table 5 B Network Address Command HT 34 Table 5 C Remote Configuration Commands sse 35 Table5 D Network Type Commands ss 36 Jable5 E Clock Source Commands ss etr trei per eet eee 37 Table 6 A DTE Rate AT Commands ss 40 Table 6 B Scrambler On Off AT Commands nter eeennnnennnnn 41 Table 6 C Data Format Commands sse ees 44 Table 6 D Transmit Clock AT Commands ss 46 Table 6 E CS Options AT Commands ss 49 Table 6 F Short and Long Delays at Different Operating Speeds 49 Table 6 G Anti Stream AT Commands sss ee 51 Table 6 H CD Options AT Commands ss 52 Table6 I TR Options AT Commands s 53 Table 6 SR Options AT Commands ss 54 Table 6 K Secondary Rate AT Commands sse 56 Table 6 L DSU TI AR Network Throughput ss 56 Table 7 A Test Timeout AT Commands ssssssesesseeenneerree ene 58 Table 7 B Remote Digital Loopback AT Commands sss 58 Table 7 C EIA Local Loopback AT Commands sse
18. Options Table 6 J shows the AT commands for setting SR OPTIONS Table 6 SR Options AT Commands Front AT c 1 FO RCED ON amp S0 O ff when network O ut Of 2 0 FF OOS ONLY amp S1 Service 00S O ff 5 seconds after disconnect 3 0 FF LOCD ONLY amp S3 SW 56 only 4 0 FF TEST ONLY amp S0 CO 5 0 FF TEST 005 amp S1 CO Off in testor OO S O ff 5 seconds after disconnect 620 FF TEST 10 CD amp S5 or test DSU III AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions Secondary Rate 1 LOCAL The SECONDARY RATE option is used to select the operating speed for the secondary channel if the secondary channel option was selected during setup of the Network Options see Figure 6 12 Press Shift B to activate the SECONDARY RATE sub menu The factory default is OFF The secondary channel has an internal 256 byte buffer If the secondary channel speed is higher than the throughput in the network CTS flow control is acti vated If the secondary DTE does not respond to CTS flow control care should be taken to prevent the secondary channel internal buffer from overflowing Network throughput is shown in Table 6 L 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 2 DTE OPTIONS 4 DTE CMD OPTION 5 TRAN SM T CLOCK 6 CS OPTIONS 1 OFF T ANTI STREAM 2 75 3 CONFIG 8 CD OPTIONS 3 150 2 REMOTE ENTER ADDRESS 9 TR OPTIONS 4 300 61202 011L1 1 A SR OPTIONS 5 600 B SECONDARY RATE 6 1 2K 7 2 4K
19. Options NETWORK OPT 5 To select NETWORK OPT press 1 then press Enter 6 To select LOOP RATE options press 1 then press Enter 7 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 then press Enter 61202 011L1 1 DSU III AR User Manual 21 Chapter 3 Operation 1 LOOP RATE 2 N ETW ORK ADDR 3 REMOTE CONFIG 1 LOCAL 2 REM OTE 1 NETWORK OPT 2 DTE OPTIONS 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND 3 CONFIG 5 CLOCK SOURCE Figure 3 1 Example of Basic Menu Travel DSU III AR User Manual 61202 011L1 1 Chapter 3 Operation FRONT PANEL The DSU III AR faceplate is shown in Figure 3 2 A B C DSU III AR rm ee ee E D F CS TD RD CD ALM TST owe e Co s Figure 3 2 DSU III AR Front View The following function descriptions apply to the stand alone DSU IIT AR 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 A sub menu item is invoked or a configura tion parameter is set The display of COMMAND ACCEPTED indicates a valid operation Numeric Keypad The numeric keypad contains the numbers 0 through 9 and alpha characters A thro
20. amp LO O P LL 2 10 OP ONLY RT 3 DTE ONLY 4 DTE WITH TP 5 TEST PATTERN 1 LO CAL UNIT 6 SELF TEST EN TER TEST UN IT ADDRESS 0 2 TEST 2 REMOTE UNIT 72 DSU III AR User Manual STATUS DISPLAY 1 EXIT TEST 2 DISPLAY STATUS 1 EXIT TEST 2 DISPLAY STATUS STATUS DISPLAY 1 EXIT TEST 2 DISPLAY STATUS STATUS DISPLAY m U N e B M mcm gt m zm 2 N I Ln 1 PATTERN RESS PTRN 1 RESS PTRN 2 RESS PTRN 3 RESS PTRN 4 1 EXIT TEST STATUS DISPLAY 2 DISPLAY STATUS w IL wn 4 o o gt IL IL Il eu co 1H 4 4 4 N e noi Cn ro e B M v gt m zm 2 1 PATTERN RESS PTRN 1 RESS PTRN 2 RESS PTRN 3 RESS PTRN 4 w IL wn 4 1 EXIT TEST STATUS DISPLAY 2 DISPLAY STATUS D IL wn 4 Un IL wn 4 a IL wn 1 STATUS DISPLAY nc U N e B M m gt m zm 2 1 EXIT TEST STATUS DISPLAY 2 DISPLAY STATUS w N L ju un on ae D lG rm WwW in Qo d iim 2 gt Z an B I wn z m un un v 4 zm z N a ju f un co a zz rn m un cn un co TU T EN D a AI c m E m D o c ef m Figure 11 4 Complete Test Menu 61202 011L1 1 Chapter 11 Testing TROUBLESHOOTING This section is intended to provide a quick and easy means of diagnosing suspected problems associated with local or remotely attached ADTRAN DSU CSUs Two separate troubleshooting sections are pro
21. amp T7 DDS Stress Pattern 1 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 LOCAL DSU CSU REMOTE DTE DSU CSU e pe p aoe 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 90 DSU Ill AR User Manual 61202 011L1 1 Chapter 11 Testing Initiating Follow the menu path outlined in Figure 11 17 to place a remote DSUIILAR into loopback 172047 PATTERN 22511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 7 DATA FROM DTE 1 LO CAL UNIT E EN TER TEST UN IT Figure 11 17 Initiating a Remote Test After selecting Remote Unit from the menu the following prompt is displayed 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 Enter The test pattern selections are displayed After a test pattern is selected 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 61202 01111 1 DSU III AR User Manual 91 Chapter 11 Testing 92 DSU Ill AR User Manual 61202 011L1 1 Cha
22. connected to Teo fare M ee DSU C SU and wall jack Power the unit N A Verify the unit passes self test during power Off and then On up displayed on the LCD 61202 011L1 1 DSU III AR User Manual 75 Chapter 11 Testing Test Sequence for Troubleshooting New Installs or Existing Circuits If your DSU Do this is suspected of having Perform a Self Test to deter mine problems the unit is in good health is receiving excessive errors Perform a DTE with Test Pattern requiring retransmission to determine if the unit s internal of data transmitter and receiver is operating error free is receiving excessive Perform a Remote Test to errors requiring verify the connection between the retransmission of data local and remote unit is error free Run the test using all available test patterns If an external BERT tester is available these additional tests may be NOTE performed DTE amp Loop Test DTE Only Test Loop Only Test If the unit fails any of these tests or the problem has not been determined contact ADTRAN Technical Support see inside back cover 76 DSU III AR User Manual 61202 011L1 1 Chapter 11 Testing LOCAL UNIT DIAGNOSTICS 61202 011L1 1 The local DSU III AR can perform six different tests see Table 11 C Table 11 C Test AT Commands Front AT EN Loop Only RT STI amp T8 619 Self Test Check Internal Components Resets Unit Exit Test Stops test returns to data mode TD
23. defined in AT amp T PUB 62310 Dedicated DDS AT amp T PUB 41468 Switched 56 SPRINT TS 0046 Switched 56 Line Interface RJ 485 4 wire full duplex Receiver Sensitivity 45 dB at all rates 108 DSU Ill AR User Manual 61202 011L1 1 61202 011L1 1 Appendix E Specifications Summary Environment Operating Temperature 0 C to 50 C 32 F to 1229F Storage Temperature 20 C to 70 C 4 F to 158 F Relative Humidity Up to 95 non condensing Dimensions 2 25 H 8 75 W 10 25 D Weight 3 lbs Power 115 VAC 60 Hz 8 W MTBF 439754 hours CLEI DDSUJ602AA DSU III AR User Manual 109 Appendix E Specifications Summary 110 DSU Ill AR User Manual 61202 011L1 1 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 copper 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 followed by a stop bit AT commands Also known as the Hayes Standard AT Command Set A language that enables PC communications software to control asynchronou
24. ignored and only the dialable digits are dialed Possible responses include VAL CNX and CFIxx CRS Call Request Using Stored Number The CRS command causes the DSU III AR to dial the number DSU III AR User Manual 15 Chapter 2 Installation 16 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 param eter the INVPS Invalid Parameter Syntax response is issued If this command is issued and the register parameter is not in the valid range for dialing registers the INVPV Invalid Parameter Value response is returned Other responses include VAL CNX and CFIxx DIC Disregard Incoming Call This command causes the V 25 bis processor to return to com mand mode even if there is an incoming call pending This allows local commands to be issued and incoming calls to be ignored There are no parameters associated with this com mand 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 If this command is entered with no parameters the INVPS response is returned If no register number is included in the command or if it is invalid the INVPV response is returned This response is also returned if the number to be stored
25. matches the desired system requirements then no additional configuration is required to put the unit into service If profile 1 does not match the desired system require ments modify the default configuration or select another profile more closely matching the desired configuration and modify When a new profile is loaded or the existing profile is modified it is stored in the nonvolatile configuration memory The DSU IIL AR is then configured with that profile every time power is turned on or reset See the chapter Manual Command for information on loading default configuration profiles DSU III AR User Manual 61202 011L1 1 Chapter 2 Installation Configuration Methods AT Commands 61202 011L1 1 The DSU III AR provides methods for both local and remote configuration These methods are shown in Table 2 E Table 2 E Configuration Methods p Stand Alone Method Local Remote AT Commands Yes DATAMATE No yes IVT100 Noes The DSU III AR can be configured and controlled with in band AT commands from an asynchronous DTE port just as modems are To exit the data mode and enter the command mode the asyn chronous DTE device must transmit a proper escape sequence or three pluses to the DSU III AR 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 defa
26. numbers DSU III AR User Manual 13 Chapter 2 Installation The following list contains possible responses to V 25 bis com mands 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 Valid V 25 command processed INV Invalid command received CFI Call failed INC Incoming call CNX Call connected 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 reestablish 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 AR to be configured 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 depe
27. of a DTE Only test DSU III AR User Manual 61202 011L1 1 Chapter 11 Testing DTE With Test Pattern The DTE with TP test pattern test is similar to the DTE Only test described previously except the test pattern is generated using the DSU CSU internal test pattern generator This test can be used to detect deficiencies within the internal drivers and receivers of the DSU IILAR Figure 11 11 illustrates the loopback point and the data paths for this test LOCAL DSU CSU DT E 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 pur poses Verify integrity of the DTE interface Verify integrity of connection between DTE and DSU III AR Initiating Follow the menu path outlined in Figure 11 12 to initiate a DTE Test using a Test Pattern 61202 01111 1 DSU III AR User Manual 85 Chapter 11 Testing 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 1 DTE amp LOO P LL 2 LO OP ONLY RT A4zDTR WITH TP 5 TEST PATTERN 2 REM OTE UNIT Figure 11 12 Initiating a DTE Test with Test Pattern Interpreting Test Results If the unit is functioning properly the DSU III AR 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
28. of errors accumulated 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 appear on the TEST ERR display 86 DSU Ill AR User Manual 61202 011L1 1 Test Pattern Chapter 11 Testing The Test Pattern option converts the local DSU III AR 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 Figure 11 13 illustrates the data paths for this mode LOCAL REMOTE DSU CSU DSU CSU Error Test Pattern Inject Generator Test Purpose Initiating 61202 011L1 1 Figure 11 13 Test Pattern Only Testing using a test pattern is used for the following purposes Transmits user selected test pattern using an internal test pattern generator and compares the received data using internal test pattern detector to detect if there are any errors on the DDS circuit e Injects errors and verifies the unit transmits data across the communication circuit to the remote unit Helps determine from which direction the circuit is receiving errors Follow the menu path outlined in Figure 11 14 to initiate a test using a test pattern DSU III AR User Manual 87 Chapter 11 Testing 1 DTE amp LOO P LL 2 LO OP ONLY RT 3 DT
29. option 1 N ETW ORK TYPE 2 DTE OPTIONS 1 LOCAL 3 TEST OPTIONS 2 REMOTE ENTER ADDRESS 4 DIAL OPTIONS STO RED N UM BER TO 1 PHONE NUMBER EDIT 1 10 3 CONFIG 2 AUTO ANSWER Figure 8 1 Editing Stored Phone Numbers 61202 011L1 1 DSU III AR User Manual 61 Chapter 8 Configuring Dial O ptions Table 8 A shows the AT Command for storing phone numbers Table 8 A AT Command for Storing Phone Numbers AT Store Phone N umber 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 AR 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 N ETW O RK TYPE 2 DTE OPTIONS 1 LOCAL 3 TEST OPTIONS 2 REMOTE ENTER ADDRESS 4 DIAL OPTIONS Figure 8 2 Enabling Disabling the Auto Answer Function 1 PHO NE NUM BER 2 AUTO ANSWER 1 DISABLED 2 EN ABLED Table 8 B show the AT Commands available for the AUTO ANSWER option Table 8 B AT Commands for Auto Answer Front AT 1 DISABLED JO Auto Answer disabled 2 EN ABLED Ji Auto Answer enabled 62 DSU III AR User Manual 61202 011L1 1 Chapter 9 Manual Command MANUAL COMMAND The MANUAL COMMAND option is a shortcut method for entering configuration and control command
30. provides a way of testing the digital circuit clocking An oscillator generated signal that provides a timing reference for a 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 16 shelf used to connect a VT 100 terminal or DATAMATE for configuring SMART 16 DSU CSU products 112 DSU Ill AR User Manual 61202 011L1 1 Glossary customer premise equipment CPE All telecommunications terminal equipment located on the customer premises including telephone sets private branch exchanges PBXs data terminals and customer owned coin operated telephones 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 DATAMATE 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 digital transmission facilities dataphone digital 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
31. rem Ee T en ad 94 iv DSU III AR User Manual 61202 011L1 1 Table of Contents Open LOOP errereen nine 94 No eT nn dete m rh EE REA bibere ed 94 Check Telco Lane iani et nece m eire 95 OOS OOE from INE nitet rrt t er lente rette eese a 95 No Frame SYNC ones ittm Gen en m ien an AOI ERR EEE 95 Test from Teleo ice reiner er ti eene 95 late Adapting sn nn ien d tenu ean peret pie iade 95 Answering Galles ns ennemies 95 No Wink from CO iensciaiece aset metra nani inae eene iecur 95 Call Discorineet ecrire enar et erret tege pereas 95 Network Rates i rece i d dirti ens itas 96 DTE Rate Mode tet irte rte teer e ene oe rac b ees ee oar n 96 DTE Control Leads and Status teer orientieren 96 Appendix A AT Commands msn 97 Appendix B Default Configuration Profiles Default Configuration Probes eite retreat retener n KEN EEn 99 Profile Levinas emen E eir entend 99 Profile 2 saian a 99 Profile G caeremoniis emena nee vei iE a PrE rE KARETA aE 99 ns 99 Appendix C DSU to Modem Interconnect Modem Tail Circuit Application eene terrre TR Hte dee 103 Appendix D EIA 232 Connector 56 and 64 kbps Applicat OM aces ete tete etienne tenter nee 105 Appendix E Specifications Specifications and Features ss 107 GIOSSATY P 111 TIN L i nn nre RAN RES ISER TETUR DE HUMEUR EP lines AE vesnneosssSssedseansessssnnssoussdonse 119 List of Tables Table 2 A Pin Assignments for Telco Connector neit
32. 2 38 4 or 64 kbps The systems can use central hub offices for obtaining test access bridging legs of multipoint circuits 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 operating companies data set ready SR A signal on the EJA 232 interface that indicates if the communications is connected and ready to start handshaking control signals so communications can begin data terminal equipment DTE In the EIA 232C standard specification the ELA 232C is connected between the DCE and a DTE The main difference between the DCE and the DTE is that pins two and three are reversed 61202 011L1 1 DSU III AR User Manual 113 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 characteristics 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 correspondi
33. 202 011L1 1 DSU III AR User Manual 41 Chapter 6 Configuring DTE O ptions 42 vil A CAUTION For point to point operation at 56 kbps with secondary channel the network requires that the primary and secondary channel data not be all zeros simultaneously For HDLC protocol applications this constraint can be eliminated by selecting either the DATA INVERT option or the SCRAMBLER ON option 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 activate loopbacks To prevent this the SCRAMBLER ON or SUPPRESS LBE option should be selected for both the local and remote DSU III AR DSU III AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions Connector Type The CONNECTOR TYPE option is used to specify which of the primary channel 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 O PT 1 DTE RATE 2 DTE OPTIONS 1 LOCAL 2 REMOTEJENTER ADDRESS 5 MANUAL COMMAND Figure 6 3 Selecting the Connector Type 61202 011L1 1 DSU III AR User Manual 43 Chapter 6 Configuring DTE O ptions Data Format The DATA FORMAT option is used to select either the SYN CHRONOUS or ASYNCHRONOUS mode of operation for the DTE i
34. 3 TEST OPTIONS 4 DIAL OPTIONS 5 M AN UAL Figure 6 12 Setting the Secondary Rate DSU III AR User Manual 55 Chapter 6 Configuring DTE O ptions Table 6 K shows the equivalent AT commands for setting the secondary rate option Table 6 K Secondary Rate AT Commands Front AT Ew 1 0FF No secondary channel selected Secondary chanel rate 75 bps Table 6 L DSU III AR Network Throughput Loop Rate Secondary Channel Throughput 56 DSU III AR User Manual 61202 011L1 1 Chapter Configuring Test Options TEST OPTIONS The TEST OPTIONS menu enables or disables different test modes and specifies the maximum test time allowed Test Timeout The TEST TIMEOUT option sets the length of time a DSU III AR 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 ORK OPT 2 DTE OPTIONS 1 LOCAL 2 REMOTEJENTER ADDRESS 1 TEST TIMEOUT JENTER TIMEOUT 2 RDL EN DIS O OFF 00 SEC 3 TEST OPTIONS 4 EIA RLB EN DIS 4 DIAL OPTIONS 5 MANUAL COMMAND Figure 7 1 Setting Test Timeout Option 61202 011L1 1 DSU III AR User Manual 57 Chapter 7 Configuring Test O ptions Table 7 A shows the equivalent AT commands for setting the TEST TIMEOUT Table 7 A Test Timeout AT Commands Front AT m Panel Description ENTER TI
35. 4 kbps Loop Rates 41 Figure 6 3 Selecting the Connector Type ss 43 Figure 6 4 Selecting Asynchronous or Synchronous Data Format 44 Figure 6 5 Selecting DTE Command Option ss 45 Figure 6 6 Transmit Clock Options ss 46 Figure 6 7 Selecting CS OPHONS cci eite ime et mits estimer 48 Figure 6 8 Anti Stream Options sen 50 Figure6 9 Selecting CID Options isnt antenne eine HH Ip rire 51 Figure 6 10 Selecting TIS Options oeste eire perenne erp ic penitentie een 52 Figure 6 11 Setting SR Options sens 54 Figure 6 12 Setting the Secondary Rate ssssssssssssssseeeeneeeeenenens 55 Figure7 1 Setting Test Timeout Option ss 57 Figure 7 2 Remote Digital Loopback sis 58 Figure7 3 ETA Local Loopback Options ss 59 Figure 7 4 EIA Remote Loopback Options ss 60 Figure8 1 Editing Stored Phone Numbers sss 61 Figure 8 2 Enabling Disabling the Auto Answer Function sees eee ereer 62 Figure9 1 Manual Command sn 63 Figure 10 1 Dial Options Menu tin 67 Figure 10 2 Path to Storing Numbers Option ss 68 Figure 11 1 Normal Operation Before Initiating Loopback Test 69 Figure 11 2 Initiating a Testare se eaa iea E r EE EE enne 70 Figure 11 3 Sample Test Status Displays esses 7 Figure 11 4 Complete Test Menu erem tpe e ree eene is 72 Figure 11 5 DTE amp Loop Test ss 79 Figure 11 6 Initiating a DTE amp Loop Test esses 80 Figure E eS T tete tn rre titer reete t
36. 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 Secondary channel operation is supported at all service rates up to 56 kbps providing terminal rates of 75 150 300 600 1200 and 2400 bps The secondary rates available depend on the service rate configured 4 Wire Switched 56 Overview 61202 011L1 1 This switched 4 wire Digital Data Service allows customers to pay for data connection only for the time the unit is active The regional operating companies provide the 4 wire local loop service to SW56 customers In SW56 mode the DSU III AR supports DTE rates of 2 4 4 8 9 6 19 2 38 4 asynchronous or synchronous and 56 kbps synchronous An additional DTE rate of 57 6 kbps is available in async modes DSU III AR User Manual 3 Chapter 1 Introduction 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 one of the numbers listed on the inside back cover of this manual 4 DSU III AR
37. ADRAN DSU Ill AR Data Service Unit USER MANUAL 61202 011L1 1B July 1995 Trademark Hayes is a registered trademark of Hayes Microcomputer Products Inc ADRAN 901 Explorer Boulevard P O Box 140000 Huntsville AL 35814 4000 Phone 205 963 8000 1997 ADTRAN Inc All rights reserved Printed in USA FCC regulations require that the following information be provided in this manual 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 telephone company If this equipment causes harm to the telephone network the telephone 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 customer of the right to file a complaint with the FCC The telephone company may make changes in its facilities equipment operations or procedures that could affect the proper operation of this equipment advance notification and the opportunity to maintain uninterrupted service is given If experiencing difficulty with this equipment please 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
38. AND Figure 6 1 DTE Rates for 56 or 64 kbps Loop Rate with No Secondary Channel The equivalent AT commands for setting the DTE rate for a 56 kbps loop rate with no secondary channel are shown in Table 6 A Table 6 A DTE Rate AT Commands Panel Command If the DSU III AR is set for a loop rate of 56 kbps with secondary channel then SCRAMBLER ON OFF options are available as shown in Figure 6 2 The factory default setting is SCRAMBLER OFF 40 DSU III AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions For 56 kbps Secondary Channel Loop Rates 1 SCRAMBLER OFF 2 SCRAMBLER ON 3 DATA IN VERT 1 N ETW ORK OPT 2 DTE OPTIONS 2 CONNECTOR TYPE 3 DATA FORMAT 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 6 CS OPTIONS 7 ANTI STREAM 8 CD OPTIONS 9 TR OPTIONS A SR OPTIONS B SECO N DARY RATE 3 CONFIG 2 REMOTE ENTER ADDRESS 3 TEST OPTIONS 4 DIAL OPTIONS Figure 6 2 DTE Rates for 56 kbps Secondary Channel and 64 kbps Loop Rates Table 6 B shows the equivalent AT commands for setting SCRAMBLER ON OFF for loop rates of 56 kbps with secondary channel and 64 kbps Table 6 B Scrambler On Off AT Commands Front AT Description Panel Command P 1 SCRAM BLER OFF DTE data scrambler disabled 2 SCRAM BLER ON DTE data scrambler enabled DTE data invert enabled 56 kbps 3 DATA INVERT secondary channel Loop Rate only ni LBE codes from DTE suppressed 64 kbps only 61
39. E ONLY 4 DTE WITH TP 6 SELF TEST 2 REMOTE UNIT 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 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 88 DSU III AR User Manual 61202 011L1 1 Self Test Test Purpose Initiating Chapter 11 Testing The Self Test verifies current operation of the DSU II AR It can be performed at any time and is recommended if there is any question about the DSU s health To determine if the DSU is functioning properly Follow the menu path outlined in Figure 11 15 to initiate a test using a test pattern 1 DTE amp LOO P LL 2 10 OP ONLY RT 2 REMO TE UNIT Figure 11 15 Initiating a Self Test Interpreting Test Results 61202 011L1 1 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 DSU III AR User Manual 89 Chapter 11 Testing REMOTE UNIT DIAGNOSTICS A remote DSU III AR can perform seven different tests see Table 11 E Table 11 E Remote Tests and AT Commands Front AT Tm 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
40. LAY LONG 6 CS OPTIONS T ANTISTREAM 8 CD OPTIONS 9 TR OPTIONS JA SR OPTIONS B SECO N DARY RATE 1 CS DELAY SHORT 2 CS DELAY LONG 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 E shows the AT Commands used to set the CS OPTIONS 48 DSU III AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions Table 6 E CS Options AT Commands Front AT a 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 R2 CS off when CD goes off or if DSU 3 FOLLOWS CD cannot pass data amp 4 FO LLO W S RS CD amp R3 CS follows RS after delay and also off if CD off If CD goes off after RS is on DSU III AR will turn off CS but continue to pass data until RS goes off CS also off if DSU cannot pass data 5 0 FF WITH LO CD Off 5 sec after LOCD Valid only in SW 56 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 12CS DELAY SHORT Short Delay from RS to CS selected 2 CS DELAY LONG _D1 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 F Table 6 F Short and Long Delays at Different Operating Speeds Add to Maximum R Short Long Tolerance Time f
41. MEOUT S18 x Specify 0 255 seconds test timeout Remote Digital Loopback The RDL Remote Digital Loopback option specifies whether or not the DSU III AR 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 IGN O RED 2 RDL ACCEPTED 1 LOCAL 2 REMOTE ENTER ADDRESS 4 DIAL OPTIONS 4 EIA RLB EN DIS Figure 7 2 Remote Digital Loopback Table 7 B shows the equivalent AT commands for setting the RDL option Table 7 B Remote Digital Loopback AT Commands Front AT 1 RDL IG N O RED amp T5 RDL request from remote DSU ignored 2 RDL ACCEPTED amp T4 RDL request accepted 58 DSU III AR User Manual 61202 011L1 1 Chapter 7 Configuring Test O ptions EIA Local Loopback The EIA LLB Electronics Industries Association Local Loopback option specifies whether or not the DSU III AR responds to the LLB input from the DTE The factory default setting is DIS ABLED Figure 7 3 shows the menu path used to access the EIA LLB option 1 N ETW O RK TYPE 1 LOCAL 2 REMOTE JENTER ADDRESS 1 TEST TIM EO UT 3 TEST OPTIONS 2 RDL EN DIS 3 EIA LLB EN DIS 4 EIA RLB EN DIS 1 DISABLED 2 EN ABLED 4 DIAL OPTIONS Figure 7 3 EIA Local Loopback Options Table 7 C shows the
42. OPTIONS 2 REMOTEJENTER ADDRESS 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND 3 CONFIG 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 Since 64k and 56k secondary channel look identical on the network the DSU III will adapt to 56k secondary channel for either 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 A with the equivalent AT commands that perform the same configuration functions 32 DSU Ill AR User Manual 61202 011L1 1 Chapter 5 Configuring N etwork O ptions Table 5 A Loop Rate Commands Front Panel AT Command 38 4K with no secondary channel 61202 011L1 1 DSU III AR User Manual 33 Chapter 5 Configuring N etwork O ptions Network Address A two digit decimal address can be assigned to each DSU IIT AR 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 O P RATE 1 NETWORK OPT ENTER NETWORK 2 NETWORK ADDR JADDRESS 0 3 REMOTE CONFIG 4 N ETW O RK TYPE 5 CLOCK SOURCE 1 LOCAL 2 REMOTE JENTER ADDRESS 2 DTE OPTIONS 3 TEST OPTIONS 4 DIAL O PTION S 5 MANUAL COMMAND 3 CONFIG Figur
43. User Manual 61202 011L1 1 Chapter 2 Installation UN PACK INSPECT POWER UP Receipt Inspection Carefully inspect the DSU III AR for any shipping damages If damage is suspected file a claim immediately with the carrier and contact ADTRAN Customer Service If possible keep the original shipping container for use in shipping the DSU III AR for repair or for verification of damage during shipment Equipment Provided 61202 011L1 1 The following items are included in ADTRAN shipments of the DSU III AR e DSU III AR unit An 8 position modular to 8 position modular cable 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 V 35 cable DSU III AR User Manual 5 Chapter 2 Installation Power Up CAUTION Each DSU unit is provided with a captive eight foot power cord terminated by a three prong plug which connects to a grounded 115 VAC power receptacle A telco connector is also provided for interface to the network Power to the DSU must be provided from a grounded 115 VAC 60 Hz receptacle DSU III AR User Manual 61202 011L1 1 Chapter 2 Installation NETWORK INTERFACE CONNECTION 61202 011L1 1 The DSU III AR has an eight position modular jack labeled TELCO The connector is used for connecting to the network when the unit is configured for either dedicated or switched operation The pin assignments for t
44. Y 1 LOCAL UNIT 5 TEST PATTERN 6 SELF TEST Figure 11 8 Initiating a Loop Only Test Interpreting Test Results The Loop Only test is used for the purpose of looping the DDS circuit back to the telco No test results are available from the local DSU III AR 82 DSU Ill AR User Manual 61202 011L1 1 Chapter 11 Testing DTE Only The DTE Only test provides a method for testing both the DTE interface drivers and receivers of the local DSU III AR 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 AR When this test is implemented the far unit receives an OOS OOF message from the network and enters an alarm state NOTE LOCAL DTE DSU CSU Figure 11 9 DTE Only Test Diagram Test Purpose The DTE Only test is used for the following purposes Verify integrity of the DTE interface Verify integrity of connection between DTE and DSU III AR 61202 011L1 1 DSU III AR User Manual 83 Chapter 11 Testing Initiating Follow the menu path outlined in Figure 11 10 to initiate a DTE Only test 1 DTE amp LOO P LL 2 10 OP ONLY RT 2 REMOTE UNIT Figure 11 10 Initiating a DTE Only Test Interpreting Test Results 84 A BERT tester must be used to interpret the test results
45. al 61202 011L1 1 Chapter 11 Testing and Troubleshooting TEST OVERVIEW vy LJ CAUTION 61202 011L1 1 The DSU III AR performs a variety of diagnostic functions that isolate portions of the circuit to identify the problem source Tests may be initiated and terminated from the front panel or the DTE interface In asynchronous 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 LOCAL REMOTE DSU CSU DSU CSU DTE Tx Tx Tx HI Tx TD Rx Rx Rx ii Rx RD Figure 11 1 Normal Operation Before Initiating Loopback Test All diagnostic tests disrupt data flow DSU III AR User Manual 69 Chapter 11 Testing Initiating a Test Initiate tests using the following procedure 1 Select Test from the main menu by pressing 2 then press Enter 2 Specify local remote or AR testing by selecting the corre sponding number followed by Enter 3 Use the Up and Down Arrows to view test options 4 Select a test from the available options by pressing the corresponding number followed by Enter The example in Figure 11 2 shows the menu path for initiating a local DTE and Loop test 1
46. al Command 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 the chapter Dial Selection for more information DSU III AR User Manual 61202 011L1 1 Chapter 3 Operation Basic Menu Travel Four function keys on the left side of the DSU III AR 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 number or alpha character on the keypad press Shift to activate alpha characters The item flashes on and off to show it is the cur rently selected active choice Pressing either the Up or Down Arrow scrolls through the available menu items Pressing Enter selects the flashing item The following example and Figure 3 1 illustrate how to select the DSU HI AR Loop Rate option 1 Select Configuration CONFIG by pressing 3 then press Enter 2 Select LOCAL or REMOTE test by pressing the correspond ing number then press Enter 3 Use the Up and Down Arrows to view sub menu items 4 Choose an item on the sub menu such as Network
47. 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 AR to return the number DSU III AR User Manual 61202 011L1 1 61202 011L1 1 Chapter 2 Installation stored in the specified register The format of this command follows RLN RI EGISTI ER NUMBI ER If the register number is invalid the INVPV response is returned When a correct register number is entered the following re sponse is returned LSN R EGISTI ER NUMBI ER NUMB ER STORED VAL If no register number is present in the command the DSU III AR responds with a list of all the registers and the stored numbers This list is followed by the VAL response DSU III AR User Manual 17 Chapter 2 Installation 18 DSU III AR User Manual 61202 011L1 1 Chapter 3 Operation MENU STRUCTURE NOTE 61202 011L1 1 The DSU III AR uses a multilevel menu approach to access its many features 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
48. d 38 4 kbps services The DSU M AR may be used in either point to point or multi point circuits The DSU III AR provides both V 35 and EIA 232 electrical and physical DTE interfaces to accommodate a variety of applica tions A second EIA 232 interface is provided for use on DDS lines with secondary channel services To insure a reliable 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 In addition to DDS the unit also 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 DSU III AR User Manual 1 Chapter 1 Introduction Figure 1 1 shows a sample point to point application for the DSU IM AR DSU IIl AR DSU III AR Router a DDS Network 3 CT Er 56 kbps Figure 1 1 Sample Point to Point Application for DSU III AR DSU III AR User Manual 61202 011L1 1 DDS Overview Chapter 1 Introduction Digital Data Service 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 AR supports all DDS service rates yielding DTE rates of 2 4 4 8 9 6 19 2 38 4 sync or async 56 and
49. e 5 2 Setting the Network Address Table 5 B shows the AT command used to set the network address Table 5 B Network Address Command Front AT a XX Decimal _N xx Assigns a 2 digit N etwork Address 34 DSU III AR User Manual 61202 011L1 1 Chapter 5 Configuring N etwork O ptions Remote Configuration This option sets up the DSU III AR to accept or reject remote configuration commands Figure 5 3 shows the menu path for enabling disabling remote configuration The factory default setting is ENABLED 1 LO OP RATE 2 NETW ORK ADDR 1 NETWORK OPT 3 REMOTE CONFIG 2 ENABLED 4 N ETW ORK TYPE 5 CLOCK SOURCE 1 LOCAL 2 DTE OPTIONS 2 REMOTE JENTER ADDRESS 3 TEST OPTIONS 5 MANUAL COMMAND 3 CONFIG Figure 5 3 Enabling Disabling Remote Configuration Table 5 C shows the equivalent AT commands used to enable or disable remote configuration Table 5 C Remote Configuration Commands Front AT D ription Panel Command escrip 1 DISA BLE Disable Remote Configuration 2 EN ABLE Enable Remote Configuration 61202 011L1 1 DSU III AR User Manual 35 Chapter 5 Configuring N etwork O ptions Network Type This option configures the DSU III AR for the specific type of network being used The factory default setting is DEDI CATED see Figure 5 4 2 NETW ORK ADDR 3 REMOTE CONFIG 1 NETWORK OPT 4 NETWORK TYPE 1 DEDICATED 2 AT amp T MCI SW 56 3 US SPRINT SW 56
50. e 6 D Transmit Clock AT Commands Front AT en 1 NORMAL amp X0 TX clock from DSU selected 2 EXTERN AL amp X1 ETC clock from DTE selected The EXTERNAL clock option is normally used in modem tail circuit applications DSU to modem interconnect diagram for this application is shown in the appendix DSU to Modem Inter connect 46 DSU III AR User Manual 61202 011L1 1 61202 011L1 1 Chapter 6 Configuring DTE O ptions The EXTERNAL clock option is also recommended when the EIA 232 connector is used for 56 kbps and 64 kbps applications A special DSU cable diagram for this application is shown in the appendix EIA 232 Connector Using this option and special cable eliminates data errors caused by excessive delays in the DTE transmit clock receiver and transmit data driver DSU III AR User Manual 47 Chapter 6 Configuring DTE O ptions 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 FOLLOWS RS with CS DELAY SHORT 1 N ETW ORK OPT 2 DTE OPTIONS 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 1 LOCAL 3 CONFIG 2 REMOTEJENTER ADDRESS 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 1 FO RCED ON 2 FOLLOWS RS 3 FOLLOWS CD 4 FO LOWS RS CD 5 0 FF WITH LOCD 1 CS DELAY SHOR 2 CS DE
51. e 6 G Anti Stream AT Commands Front AT I TIMER OFF 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 OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 6 CS OPTIONS 2 DTE OPTIONS 1 LOCAL 2 REMOTEJENTER ADDRESS 2 NORMAL 3 0 FF WITH LOCD 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND B SECON DARY RATE Figure 6 9 Selecting CD Options 61202 011L1 1 DSU III AR User Manual 51 Chapter 6 Configuring DTE O ptions Table 6 H shows the equivalent AT commands for setting CD options Table 6 H CD Options AT Commands Front AT 1 FORCEDON amp CO On allthe time 2 NORMAL ser PS only when data present on loop 3 0 FF WITH LO CD amp C2 On except after disconnect in Switched 56 application The TR OPTIONS menu is used to select the DSU II AR re sponse to the data terminal ready TR lead The factory default setting is IGNORED see Figure 6 10 TR Options 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FO RMAT 2 DTE OPTIONS 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 1 LOCAL 6 CS OPTIONS 7 ANTI STREAM 3 CONFIG 8 CD OPTIONS 1 IGNORED 2 REMOTE ENTER ADDRESS 9 TR OPTIONS 2 IDLE WHEN OFF A SR OPTIONS 3 OFF gt ON DIAL 1 B SECO N DARY RATE 4 0FF gt ON DIAL 2 3 TEST OPTIONS
52. e remote DSU During remote configuration the DSU IM AR prompts for the remote address before continuing to the Con figuration CONFIG menus The Configuration menu consists of a group of five sub menus relating to a specific interface or function of the DSU III AR 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 AR contains four different user profiles sets of configurations options that are stored in read only memory see the appendix Default Configuration Profiles The unit is shipped from the factory with profile number 1 default configuration loaded into the current nonvolatile configuration memory If profile 1 matches requirements for the system then no addi tional configuration is required to put the unit into service If DSU III AR User Manual 27 Chapter 4 Configuration O verview 28 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 configuration memory The DSU III AR is then configured with that profile every time power is turned on or until the unit is reset For detailed information on con
53. ecognize delay 100 echo command AT command 97 EIA local loopback LLB 59 AT commands 59 EIA remote loopback RLB 60 AT commands 60 EIA 232 connector 105 auxiliary 10 pin assignments 8 10 EIA 232 interface 1 enter 21 23 environment 109 61202 011L1 1 Index escape character 100 escape guard timer 100 exittest 71 external clock 46 105 F flow control 97 front panel AT command 98 enable disable 100 function keys 21 G go online AT command 97 H hang up AT command 97 incoming call 94 initiate remote configuration AT command 98 installation 5 17 INV 14 IN VBL 14 IN VBM 14 IN VCU 14 IN VPS 14 IN VPV 14 L LB enable disable AT command 98 LCD window 23 LED description 24 line feed character 100 DSU III AR User Manual 121 Index line interfaces 108 line requirements 108 LLB control ATcommand 98 local configuration 27 local loopback 69 96 local unit test 77 long code 100 loop only RT 81 loop rate 21 31 100 ATcommand 98 M main menu 19 20 24 71 manual command 27 63 65 menu structure 19 menu traversal 21 22 modem tail circuit application 103 modem tail circuitapplication 46 103 network interface connection 7 interface parameters 27 network address 34 AT command 98 network options 21 27 31 37 network rate 96 network type AT command 97 no frame sync 95 no Rx signal 94 no wink from CO 95 numeric keypad 23 Oo 005 00F from net 95 122 DSU III AR Us
54. een broken NO RX SIGNAL The DSU III detects sealing current but no receive signal DSU III AR User Manual 61202 011L1 1 Chapter 12 Status Selection CHECK TELCO LINE The DSU III detects a possible reversal in the Rx and Tx pairs OOS OOF FROM NET The DSU III detects an abnormal condition code from the network NO FRAME SYNC The DSU III cannot sync on the signal from the telco 64k or secondary channel mode only TEST FROM TELCO The DSU Ill is in a test initiated from the telco Scroll to next status menu for test type RATE ADAPTING The DSU III is attempting to determine the loop rate provided from the telco In SW56 mode the following messages are possible ANSWERING CALL The DSU III is answering an incoming call NO WINK FROM CO The DSU III did not see a proper signal from the network during dialing CALL DISCONNECT The SW56 was terminated 61202 011L1 1 DSU III AR User Manual 95 Chapter 12 Status Selection 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 Loca
55. equivalent AT commands for setting the EIA LLB options Table 7 C EIA Local Loopback AT Commands Front AT m 1 DISABLED IA LLB disabled 2 EN ABLED IA LLB enabled 61202 01111 1 DSU III AR User Manual 59 Chapter 7 Configuring Test O ptions EIA Remote Loopback The EIA RLB Electronics Industries Association Remote Loopback option specifies whether or not the DSU III AR responds to the RLB input from the DTE The factory default setting is DISABLED Figure 7 4 shows the menu path for the EIA RLB options 1 N ETW ORK TYPE 2 DTE OPTIONS 1 TEST TIMEOUT 3 TEST OPTIONS 2 RDL EN DIS 3 EIA LLB EN DIS 4 EIA RLB EN DIS 1 DISABLED 1 LOCAL 2 REMOTE ENTER ADDRESS Figure 7 4 EIA Remote Loopback Options Table 7 D shows the equivalent AT commands for setting the EIA RLB options Table 7 D EIA Remote Loopback AT Commands Front AT AE 1 1 DISABLED RO EIA RLB disabled 2 EN ABLED EIA RLB enabled 60 DSU III AR User Manual 61202 011L1 1 Chapter 8 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 AR when it is configured for Switched 56 operation Phone Number The DSU III AR stores up to ten numbers of 36 digits each Edit a phone number by reentering the entire number This process overwrites the previously stored number Figure 8 1 shows the menu path used to access the PHONE NUMBER
56. er Manual openloop 94 operating modes 107 operation 19 25 69 92 P password control AT command 98 password entry AT command 98 password verify AT command 98 phone number 61 AT command 98 AT commands 62 pin assignments auxiliary EIA 232 connector 10 line 1 connector 7 primary EIA 232 connector 8 primary V 35 connector 9 pointto point operation 42 99 power 109 power cord 25 power switch 25 powerup 6 power up user profile AT command 98 primary DTE 8 primary EIA 232 25 primary V 35 25 Q quick 24 R rate adapting 95 RDL enable disable 101 re execute command AT command 97 61202 011L1 1 read S register 97 rear panel 25 receiptinspection 5 receive data 24 receiver sensitivity 108 remote command 15 remote configuration 27 AT commands 35 36 enable disable 35 100 remote loopback 69 96 request to send 24 reset AT command 97 restore factory options AT command 97 resultcode 100 result code display 97 result code from AT command 97 return material authorization RMA 4 S S register read 97 write 97 scrambler control AT command 98 scrambler mode 100 scrambler on option 42 scrambler on off 41 AT commands 41 factory default 40 secondary channel 25 55 connection 10 rate 100 services 25 secondary rate 55 56 AT commands 56 factory default 55 self test 89 61202 011L1 1 Index serial number ATcommand 98 shift 24 shortcode 100 specifications 107 SR option 100 SR options AT command 97 s
57. figuration see the chapters Configuring Network Options Configuring DTE Options Configur ing Test Options Configuring Dial Options and Manual Command A complete Configuration menu is shown in Figure 4 1 DSU III AR User Manual 61202 011L1 1 Fold Out of Complete Configuration Menu belongs here Figure 4 1 Complete Configuration Menu 61202 011L1 1 DSU III AR User Manual 29 Chapter 4 Configuration O verview 30 DSU Ill AR User Manual 61202 011L1 1 Chapter 5 Configuring Network Options NETWORK OPTIONS The NETWORK OPTIONS configuration parameters control the loop operation of the DSU III AR 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 AR also supports subrate DTE data over a 56 kbps or 64 kbps loop The loop rate must be set independently of the DTE rate Eight loop rate selections are available shown in Figure 5 1 After selecting any loop rate other than Auto or 64 kbps the option for a secondary channel is available The secondary channel rate is determined by the current loop rate 61202 011L1 1 DSU III AR User Manual 31 Chapter 5 Configuring N etwork O ptions 2 SEC CHANNEL 1 NETWORK OPT 2 N ETW ORK ADDR 3 REMOTE CONFIG 4 N ETW ORK TYPE 5 CLOCK SOURCE 1 LOCAL 2 DTE
58. g 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 The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecom munications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connec tions 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 Caution Users should not attempt to make such connections 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 on a loop may consist of any combina tion of devices subject only to the requirement that the total of the Load Num bers of all devices does not exceed 100 Table of Contents
59. he telco connector are listed in Table 2 A Table 2 A Pin Assignments for Telco Connector Pin Name Description Transmit Data from DSU to N etwork Ring 1 Transmit Data from DSU to N etwork Tip 1 36 Not Used Receive Data from Network to DSU Tip og R Receive Data from N etwork to DSU Ring DSU III AR User Manual 7 Chapter 2 Installation DTE DATA CONNECTION PRIMARY DTE AUTION The primary DTE should be connected to either the EIA 232 DTE connector or the CCITT V 35 DTE connector The maximum cable lengths recommended are 50 feet for the EIA 232 and 100 feet for the CCITT V 35 The pin assignments for the connectors are listed in Tables 2 B and 2 C 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 capacitance cable or with the external transmit clock option selected The primary DTE rate is configured from the front panel The primary DTE can operate in asynchronous or synchronous modes To prevent possible radio frequency interference emissions a shielded cable is required Table 2 B Pin Assignments for Primary ELA 232 Connector Pin EA Description 4 ca Request to Send RS 6 cc Data Set Ready SR 8 cF Received Line Signal Detector CD 9 42 Test Point 10 u2TetPon 0 15 DB ransmit Clock Tc 17 DD Receive Clock RC 18 local Loopback IW
60. hen 81 Figure 11 8 Initiating a Loop Only Test 81 Ligure 11 9 DTE Only Test Dtagram eerte quenter teorie erect 83 Figure 11 10 Initiating a DTE Only Test 84 Figure 11 11 DTE With Test Pattern erronee metres 85 Figure 11 12 Initiating a DTE Test with Test Pattern sssssssseseeee 86 Figure 11 15 Test Pattern Only eterne eem emere tecti peces 87 Figure 11 14 Initiating a Test Using a Test Pattern sese 88 Figure 11 15 Initiating a Self Test 6 ttr saerrseroros tart eter ertet 89 61202 011L1 1 DSU III AR User Manual vii Table of Contents Figure 11 16 V 54 RDE with Test Pattern rssikon riire reae A E EREDE EERE 90 Figure 11 17 Initiating a Remote Test 91 Figure 12 1 Example of Status Displays sss 93 Figure C 1 DSU to Modem Interconnect sess 103 Bisure D 1 BDA 232 Connector ie nr teneo it eerie iege 105 viii DSU Ill AR User Manual 61202 011L1 1 Chapter 1 Introduction PRODUCT OVERVIEW 61202 011L1 1 The ADTRAN DSU III AR provides a reliable high speed data connection for customer Data Terminal Equipment DTE through Digital Data Service DDS lines DDS secondary channel services DDSI or 4 wire Switched 56 network SW56 lines The DSU III AR supports both synchronous and asynchro nous 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 an
61. i dita ia nieiidaideden te tepida 84 Interpreting Test Results sense 84 DTE With Test Pattern sn nn ne manner rae dre eaa 85 Test PUTPOSS uic sesto ie ate manente eere eder ete nie ie ere eret 85 ISS sateen ersen aeee eE EERST RETER E E EAEE EE EEEIEE EREE 85 Interpreting Test Results 5er eere eon EEEE 86 JTiest Dattertis camescope raid ime tein m He entes 87 Test PUPUSE iiieoo siase etse aa ipaa ut iste eerte sen slept epis 87 DNARS conan atencion nicodtieh te e piv nate id d en 87 Interpreting Test Results oe derriere peterent egere geo piece tea 88 SML ES 89 Test N sienten be nte red ib eene reden niente dedita die teat 89 Ituttatitig enr ne eniin e en HOA HORE IH Mieter RE RC Ee Ro eoa 89 Interpreting Test Results 25e termo tane presence beant 89 Remote Unit Diagnostics ss 90 Test PUP OSC en ne ri ESEA tenue 90 Initiatitig iio asad ER re n ie e te ie rice ret ien d 91 Test RESUS M 91 Interpreting Test RESUltS tronco meten hera pie ddp 91 Chapter 12 Status Selection Status Display accetti oet ente qo v pd ee e P UP DIR ee vet nene 93 DSU Operational Status rere drehte ne en rri e de esed 94 Data MOD T PM 94 Urut 1 ate io nie hia m den e ciere niei sce Ehre 94 DTE Command Mode i entrer teret epe terim ebrei pn 94 Idle doas ien dm eene eed 94 Incoming Call e ne diner 94 LEUR SRE nia uade PS rei A EE 94 DDS Network Status ec oreste ret erige a centres 94 Loop is Normal ite hon etm ee
62. ications systems The DSU HI 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 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 systems 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 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 asynchronous communications Used to configure the ADTRAN SMART 16 Shelf 61202 011L1 1 DSU III AR User Manual 117 Glossary 118 DSU Ill AR User Manual 61202 011L1 1 Index A alarm indication 24 answer AT command 97 call 94 answering call 95 anti stream 50 AT command 50 98 factory default 50 time 100 ATcommands 11 69 77 97 98 answer 97 an
63. idential 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 A FCC limits Change or modifications to this unit not expressly approved by the v i party responsible for compliance could void the user s authority to operate the equipment CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class A 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 A prescrites dans la norme sur le materiel brouilleur Appareils Numeriques NMB 003 edictee par le ministre des Communications CANADIAN EQUIPMENT LIMITATIONS Notice The Canadian Industry and Science Canada label identifies certified equipment This certification means that the equipment meets certain telecom munications network protective operational and safety requirements The Department does not guarantee the equipment will operate to the user s satisfac tion Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equip ment must also be installed usin
64. is certain the equipment is not malfunctioning This unit contains no user serviceable parts An FCC compliant telephone cord with a modular plug is provided with this equipment This equipment is designed to be connected 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 telephone company for leased line facilities Service Digital Facility Service Order Network Type 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 FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio frequencies Operation of this equipment in a res
65. l loopback RLB Remote loopback 96 DSU Ill AR User Manual 61202 011L1 1 Appendix A AT Commands Table A A shows the AT commands available for the DSU III AR Table A A AT Commands cont me se A Reexecue Command none ATA Answer none ATOn fDiaiNumber none ATH jHangUpCal none ATO Go Online none ATQn Result Code Display 0 JATSN Read SRegister none ATSn x Write to SRegister none JATZ Reset 0 0 0 0 none AT amp Cn DCD Option 0 AT amp Dn DTROpion 0 JAT amp Fn Restore Factory Options none AT amp Kn flow Control none JAT amp LN Network Type 0 AT amp Qn DTE Data Format 0 JAT amp Rn CS Options 0 JAT amp Sn_ IRR Options 0 JAT amp Tn Test Commands 0 AT amp V IIe Current Configuration none AT amp Wn Store User Profile 0 61202 011L1 1 DSU III AR User Manual 97 Appendix A AT Commands Table A A Contd AT Commands Command Title D X B SR Control During Test RTS CTS Delay Scrambler Control IAT Jn Auto Answer Enable Disable Front Panel Enable Disable LB Enable Disable 98 DSU III AR User Manual 61202 011L1 1 Appendix B Default Configuration Profiles DEFAULT CONFIGURATION PROFILES The DSU III AR contains four different user profiles sets of configurations options stored in read only memory see Table B
66. le PowerUp Profile 0 Ss 93 00 Network Address lock Network Addr Unlock S c3 00 DSU III AR User Manual 65 Chapter 9 Manual Command 66 DSU Ill AR User Manual 61202 011L1 1 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 num bers The DIAL selection 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 access these options 1 DIAL STORED Select Stored Number 1 A 2 ENTER DIAL 3 REDIAL LAST 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 2 shows the menu path used to access the Phone Numbers option 61202 011L1 1 DSU III AR User Manual 67 Chapter 10 Dial Selection 1 N ETW ORK TYPE 2 DTE OPTIONS 1 LOCAL 3 TEST OPTIONS 2 REMOTE ENTER ADDRESS 4 DIAL OPTIONS STO RED NUM BER 3 CONFIG 1 PHONE NUMBER EDIT 1 10 2 AUTO ANSWER Figure 10 2 Path to Storing Numbers Option See the chapter Configuring Dial Options for more information Enter Dial This option allows you to enter a phone number of up to 36 digits for the DSU III AR to dial Redial Last Selecting this option redials the last phone number entered 68 DSU Ill AR User Manu
67. master timing source 2 FROM NETW ORK Network RX Signal is timing source 61202 011L1 1 DSU III AR User Manual 37 Chapter 5 Configuring N etwork O ptions 38 DSU Ill AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE Options DTE OPTIONS The DTE OPTIONS menu is used to select the configuration parameters that control the operation of the DSU IIT AR s DTE Interface such as the DTE rate connector type data format DTE command options transmit clock CS options anti stream and CD options DTE Rate The selectable DTE rates over a 56 or 64 kbps loop with no secondary channel are shown in Figure 6 1 If a slower loop rate is selected then the DTE rate automatically matches the loop rate If an attempt is made to set the DTE rate for loop rates slower than 56 kbps the DSU III AR briefly displays DTE RATE SAME AS THE NETWORK before returning to the status screen The factory default setting is SAME AS LOOP 61202 011L1 1 DSU III AR User Manual 39 Chapter 6 Configuring DTE O ptions 1 N ETW ORK OPT 6 56K 57 6K 7 SAME AS LOOP For 64kbps Loop 1 SCRAMBLER OFF 2 SCRAMBLER ON 3 SUPPRESS LBE 2 CONNECTOR TYPE 3 DATA FORMAT 4 DTE CMD OPTION 5 TRAN SM IT CLOCK 6 CS OPTIONS 7 AN TI STREAM 8 CD OPTIONS 9 TR OPTIONS A SR OPTIONS B SECO N DARY RATE 2 DTE OPTIONS 1 LOCAL 3 CONFIG 2 REMOTE EN TER ADDRESS 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUAL COMM
68. nding on the present 14 DSU Ill AR User Manual 61202 011L1 1 Chapter 2 Installation configuration 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 remote DSU via the V 25 bis command processor This allows a remote DSU III AR 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 configuration of the remote unit Responses to the CNR commands are returned in the data format currently configured Possible responses include VAL and INVn Switched 56 Operation 61202 011L1 1 CRN Call Request with Number When the DSU III AR is configured for SW56 operation the CRN command causes the DSU to dial the supplied number The command s format follows CRN NUMBER TO BE DIALED If no number is included in the command the number stored in dial register number 1 is dialed If no number is provided and no number is stored in dial register number 1 the DSU III AR responds with the call failure indication CFINS Call Failure Indication Not Stored For a DBU unit this command initiates dialing on the backup circuit If the number supplied contains non dialable digits they are
69. network options 31 remote 27 testoptions 57 60 configuration CONFIG 20 configuration local CNL 14 configuration menu 29 configuration remote CN R 15 connector 120 DSU Ill AR User Manual EIA 232 105 connector type 43 factory default 43 customer service 4 5 D data buffering 108 data format 44 ATcommands 44 factory default 44 data invertoption 42 data mode 94 data rates 107 data set ready SR 96 AT commands 54 factory default 54 data set ready SR control during test AT command 98 data terminal ready 96 data terminal ready TR AT commands 52 factory default 52 DBU connection 92 DDS network status 94 default configuration profiles 99 101 Diagnostics 108 dial 20 dial backup configuration 61 62 dial number AT command 97 dial options 27 67 68 dial up operation 99 dialing 94 dialing options 108 digital data service DDS 1 37 down arrow 21 24 DSU operational status 94 DSU to modem interconnect 103 DTE amp loop LL 79 61202 011L1 1 DTE command mode 94 DTE command option 45 DTE connectors 25 DTE data connection 8 DTE data format 100 AT command 97 DTE interface 25 69 DTE interface parameters 27 DTE interfaces 107 DTE only 83 DTE options 27 DTE rate 39 96 100 AT Commands 40 factory default 39 DTE rate same as the network 39 DTE rate select AT command 98 DTE rates 107 for 56 kbps loop rate with no second ary 40 DTE status 96 DTR command timeout 100 DTR option AT command 97 DTR r
70. ng 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 FCC Rules and regulations intended to provide protection of the telephone network from harm caused by connection of equipment to the network full duplex A circuit designed to transmit and receive data simultaneously half duplex A circuit designed to both transmit and receive data but not at the same time 114 DSU Ill AR User Manual 61202 011L1 1 Glossary 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 vendors 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 telecommunications services local or long distance local DTE and loop test A test initia
71. ntact telco disconnected provider Transmit receive pair Telco wall jack wired Switch wire pairs in CHECK TELCO LINE reversal detected incorrectly wall jack or contact telco service provider Telco activated a Telco is testing circuit W ait until test is TEST FROM TELCO loopback to test the complete or contact DDS circuit telco service provider 74 DSU Ill AR User Manual 61202 011L1 1 Chapter 11 Testing 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 B to ensure the unit is config ured properly After verifying the items listed in Table 11 B the unit should operate properly and display the following DATA MODE LOOP IS NORMAL If a status message other than DATA MODE LOOP IS NOR MAL is shown begin performing diagnostics described in the section Test Sequence for Troubleshooting New Installs or Existing Circuits Table 11 B Troubleshooting New Installs Select the type of DTE interface option to DTE Type RS 232 or V 35 connect to the DSU CSU from the configuration menu Select the DDS loop rate of the DDS circuit Loop Rate Auto 2 4 to 64 kbps from the configuration menu Select the type of data to be used from the Data Format async or Sync DEUS UNE Verify DTE cable connection to the proper DTE Cable DTE connector on the DSU CSU Verify the telco cable is securely
72. nterface The factory default setting is SYNCHRONOUS see Figure 6 4 If ASYNCHRONOUS is chosen the length of the data bytes must be selected 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 1 ASYNC 9 BITS 2 ASYNC 10 BITS 3 ASYNC 11 BITS 3 DATA FORMAT 1 ASYN CHRONOUS 2 DTE OPTIONS 2 SYNCHRONOUS 4 DTE CMD OPTION 5 TRAN SMIT CLOCK 6 CS OPTIONS 7 ANTI STREAM 8 CD OPTIONS 9 TR OPTIONS A SR OPTIONS B SECO N DARY RATE 3 TEST OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND Figure 6 4 Selecting Asynchronous or Synchronous Data Format Table 6 C shows the AT commands that can be used to set the DATA FORMAT Table 6 C Data Format Commands Front AT 1 ASYNCHRONOUS amp Q0 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 44 DSU Ill AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions 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 OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 1 DISABLED 4 DTE CMD OPTION
73. one Naber 61 AUTO ATIS WOT ssc Her ETS TRE E rat 62 Chapter 9 Manual Command Manual Command te pet rena ER SR TREE aaaea 63 Chapter 10 Dial Selection Dial OPHONS accetti ove aee etiani n d tem nent fete 67 Chapter 11 Testing and Troubleshooting Test OVeEVie W ccce teinte cete levi dei pta eee Ed eR Aedes 69 Imitating a X 70 Test Status DIS T 71 XU ee VCS E T E E E E 71 TroubleshoOtDg EN one ro met em e e nep RU A EAE 73 Messages from the DSU CSU ertet rtt tet teet riter techno 73 Troubleshooting New Installs 75 Test Sequence for Troubleshooting New Installs or Existing Circuits 76 Local Unit Diag os Hs ie tesentan ni eo eae eed eae en ten ree bie e iens 77 DTE amp Loop Ll eet tee tte rtis ciet eti etre 79 Test Desci pto Hirira e eni tn rn OO HERE IDE ET 79 Test Purpose serrure tee mi aee pese dee tt em ere nement 79 61202 011L1 1 DSU III AR User Manual iii Table of Contents Ibnut1aUfig ica eido seri tiesiteenii eso Ha nic ann Orc nieve cire eser tnra 80 Interpreting Test Results onm derepente ro prep comcast 80 Loop Only RTS SR rest ote mem d nanan dete 81 dest Purpose desierit iiU en cete eere Leer deter eese ee te ege id 81 IAE asser Eno ien aite e terii ter ev t tn Re 81 Interpreting Test Results sense 82 bags lp TEE 83 Test PUTPOSS s cases einen anes e ae etes um 83 InXtaUbg 5 aisotaosierd aee ie
74. or Option Option Secondary Channel ate ak iims i6im sams 56K 61202 011L1 1 DSU III AR User Manual 49 Chapter 6 Configuring DTE O ptions Anti Stream The ANTI STREAM option is used to select the anti stream timeout Figure 6 8 shows the menu path used to access the ANTI STREAM options menu The anti stream timeout is the maximum time the DSU III AR transmits data into 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 timeout expires the DSU III AR stops transmitting DTE data into the network but continues to accept data from it This condition exists until the DTE deactivates the RS input 1 N ETW ORK OPT 1 DTE RATE 2 CONNECTOR TYPE 3 DATA FORMAT 4 DTE CMD OPTION 5 TRAN SM IT CLOCK 6 CS OPTIONS 7 ANTI STREAM 8 CD OPTIONS 9 TR OPTIONS A SR OPTIONS B SECO NDARY RATE 2 DTE OPTIONS 1 TIMER OFF 2 TIME 10 SEC 3 TIME 30 SEC 1 LOCAL 2 REMOTEJENTER ADDRESS 3 TEST OPTIONS 5 MANUAL COMMAND Figure 6 8 Anti Stream Options 50 DSU III AR User Manual 61202 011L1 1 Chapter 6 Configuring DTE O ptions The factory default setting is TIMER OFF Table 6 G shows the available options and their AT commands Tabl
75. oth syn chronous and asynchronous DTE ports The V 25 bis option supports the following protocols SDLC Synchronous Data Link Control BI SYNC ASYNCHRONOUS Character Format Data bits 8 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 03H 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 DSU III AR User Manual 61202 011L1 1 Bi Sync Option Chapter 2 Installation Character Format Data bits 7 Parity bit Odd Command Structure SYN SYN STX V 25 bis COMMAND ETX Asynchronous Option Character Format e Start bit 1 Data bits 7 Parity bit Even e Stop bit 1 Command Structure V 25 bis COMMAND CR LF Command Descriptions 61202 011L1 1 The ADTRAN V 25 bis command set is a subset of the CCITT V 25 bis command set In addition to the CCITT commands supported ADTRAN has added configuration commands for both local and remote DSUs The ADTRAN V5 bis command set follows 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
76. pair is needed Technical Support will coordinate with the Return Material Authorization RMA department to issue an RMA number For information regarding equipment currently in house or possible fees associated with repair contact RMA directly at the following number RMA Department 205 963 8722 Identify the RMA number clearly on the package below ad dress and return to the following address ADTRAN Inc RMA Department 901 Explorer Boulevard Huntsville Alabama 35806 RMA
77. pter 12 Status Selection STATUS DISPLAY The STATUS selection displays two lines at a time of the current operational status of the network and the DTE interfaces After 30 seconds of no front panel operation the DSU III AR automatically reverts to the status display Examples of possible status displays are shown in Figure 12 1 LOOP IS NORMAL Screen 2 LOOP 56K DTE 56K SYNC Sereen 3 TR SR LB RIB ON ON OFF OFF AA AA AA 61202 011L1 1 DSU III AR User Manual DSU O perational Status DDS N etwork Status N etwork Rate DTE Rate Mode DTE Control Leads Control Lead Status Figure 12 1 Examples of Status Displays 93 Chapter 12 Status Selection 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 DDS Network Status 94 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 b
78. s and Hayes compatible modems AT is short for attention 61202 011L1 1 DSU III AR User Manual 111 Glossary AWG American Wire Gauge Standard measuring gauge for nonferrous conductors i e non iron and non steel The higher the AWG number the thinner the wire 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 of 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 synchronous data communications transmission method originated by IBM in 1964 carrier detect CD Asignal 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 multiplexer channel bank or directly to another device producing a digital 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 problems and
79. s for the DSU III AR The first display prompts the user to enter the command num ber COMMAND 00 Figure 9 1 shows the menu path for MANUAL COMMAND The available manual commands are listed in Table 9 A 1 N ETW ORK OPT 1 LOCAL 2 REMOTE JENTER ADDRESS 3 TEST OPTIONS 4 DIAL OPTIONS COMMAND 00 5 MANUAL COMMAND JCOMMAND 00 JVALUE 00 Figure 9 1 Manual Command Use the number keys to enter the hexadecimal command num ber Press Enter to complete 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 61202 011L1 1 DSU III AR User Manual 63 Chapter 9 Manual Command COMMAND XX VALUE 00 Use the number keys to enter the hexadecimal value Press Enter to complete The system briefly displayss COMMAND ACCEPTED and returns to the active menu 64 DSU III AR User Manual 61202 011L1 1 61202 011L1 1 Chapter 9 Manual Command Table 9 A Manual Commands Command Description Command Value AT Command Echo y Disable 5 0 0 82 00 AT Result code Enable 85 00 AT Long or Short code Shotfom tO dongfom 86 to AT LF Character REE Load Factory Opt OE Optonset i 8A 00 Store User Profile SavetoProfled 91 o Select User Prof
80. t Options RDL En Dis RDL Accepted RDL Accepted RDL Accepted RDL Accepted EIA Controlled LB EIA Controlled RLB Dial Options 61202 011L1 1 DSU III AR User Manual 101 Appendix B Default Configuration Profiles 102 DSU Ill AR User Manual 61202 011L1 1 Appendix C DSU to Modem Interconnect MODEM TAIL CIRCUIT APPLICATION A DSU to modem interconnect diagram for a modem tail circuit application is shown in Figure C 1 RG lt ETC ETC lt RC RD lt _ TD TD lt RD For Multi drop requirement DCD lt RTS RTS gt DCD Figure C 1 DSU to Modem Interconnect 61202 011L1 1 DSU III AR User Manual 103 Appendix C DSU to Modem Interconnect 104 DSU Ill AR User Manual 61202 011L1 1 Appendix D ElA 232 Connector 56 AND 64 KBPS APPLICATION The EIA 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 interface ELA 232 connector tie transmit clock lead TC to external transmit ETC as shown DTE DSU III AR Pin 15 Tc Pin 24 ETC No connection EIA 232 CONNECTOR Figure D 1 EIA 232 Connector 61202 011L1 1 DSU III AR User Manual 105 Appendix D EIA 232 Connector 106 DSU Ill AR User Manual 61202 011L1 1
81. tatus 20 store user profile AT command 97 SW 56 abortcalltimer 100 synchronous operation 69 T telco jack 25 temperature 109 test 20 DTE only 83 loop only 81 self 89 test pattern 87 test commands 77 AT commands 97 test from telco 95 96 test menu 72 test mode manual 24 test options 27 configuration 57 60 test pattern 87 AT command 98 test pattern type 100 test timeout 57 101 AT commands 58 TRoption 100 transmitclock 46 105 AT command 46 98 timing source 100 transmitdata 24 troubleshooting new installs 75 DSU III AR User Manual 123 Index U unit dialing options 27 unit test options 27 up arrow 21 24 user profiles 27 V V 25 bis commands 12 69 asynchronous option 13 bi sync option 13 SDLC option 12 V 35 connector 8 9 pin assignments 9 VALA 14 view current configuration AT command 97 W warranty 4 write to S register 97 124 DSU III AR User Manual 61202 011L1 1 Product Support Information Presales Inquiries and Applications Support Please contact your local distributor ADTRAN Applications Engineering or ADTRAN Sales Applications Engineering 800 615 1176 Sales 800 827 0807 Post Sale Support Please contact your local distributor first If your local distribu tor cannot 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 re
82. ted 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 power 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 parity bit A binary bit appended to an array of bits to make the sum of all the bits always odd or always even 61202 011L1 1 DSU III AR User Manual 115 Glossary point to point A private circuit conversation or teleconference in which there is one person at each end usually connected by some dedicated transmission modem read only memory ROM A memory device which is programmed at the factory and whose contents thereafter cannot be altered remote digital loopback RDL 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
83. ti stream 50 auto answer enable disable 98 clear to send CS 49 97 clock source 37 clock source select 98 data format 44 data set ready SR 54 97 control during test 98 data terminal ready DTR option 97 data terminal ready TR 52 dial number 97 DTE data format 97 rate 40 98 echo command 97 EIA local loopback LLB 59 61202 011L1 1 EIA remote loopback RLB 60 flow control 97 front panel 98 go online 97 hang up 97 initiate remote configuration 98 LLB control 98 loop rate select 98 network address 98 network type 97 password control 98 entry 98 verify 98 phone number 62 power up user profile 98 re execute command 97 reset 97 restore factory options 97 result code display 97 result code from 97 RTS CTS delay 98 S register read 97 write to 97 scrambler control 98 scrambler on off 41 secondary rate 56 serial number 98 DSU III AR User Manual 119 Index test commands 97 test pattern 98 test timeout 58 transmit clock 46 98 user profile 97 view current configuration 97 AT password control 100 auto answer enable disable ATcommand 98 auxiliary EIA 232 25 B back space character 100 C call disconnect 95 cancel 21 24 carriage return character 100 carrier detect CD 24 51 100 check telco line 95 clear to send CS 24 48 49 100 AT command 97 AT commands 49 clock source 37 AT command 98 clocking 108 command echo 100 configuration 10 dial backup 61 62 DTE options 39 local 27
84. ugh F which are used to activate menu items or enter parameters 61202 011L1 1 DSU III AR User Manual 23 Chapter 3 Operation 24 Shift Alpha characters are entered by pressing Shift before each 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 Shift then the letter Press Enter to select the item If a key is pressed without using Shift the numbered item becomes active instead of the alpha item If this happens repeat the correct procedure Quick During most operations the Quick key returns 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 Cancel The Cancel key stops the current activity and returns to the previous menu Repeat until the desired menu level is reached Up and Down Arrows The Up and Down Arrows scroll through the sub menu items available in the current menu Sub menu items appear two at a time in a circular or wrapping fashion When the sub menu items are scrolled they continuously appear from beginning to end in a forward Down Arrow or reverse Up Arrow pattern LED Description The DSU III AR 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
85. ult value for the guard time is one second For a valid escape sequence to occur the DTE must transmit the escape code character three times in succession with delay between each character being less than the guard time Once the command mode is entered AT commands can be transmitted to the DSU III AR to configure most of the options or initiate tests to check both the DSU III AR and the network connections All command lines must begin with the AT charac ter set in either capital or lower case letters DSU III AR User Manual 11 Chapter 2 Installation The command line may contain a single command or a series of commands after the AT attention code When a series of com mands 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 AR upon receipt of a terminating character The default termi nating character is a carriage return ASCII 013 but it can be changed by writing a different value to register S3 Before the terminating character is transmitted the command line can be 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 AR are listed in the appendix AT Commands V 25 bis Commands 12 SDLC Option When configured for the V 25 bis option the DSU III AR accepts in band dialing and configuration commands from b
86. vided one focuses on new installs the other on existing circuits Messages from the DSU CSU NOTE 61202 011L1 1 The DSU III AR displays messages on the LCD display and LEDs concerning 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 A is displayed on the LCD The Status menu must be selected in order for the unit to display status messages Pressing Quick returns to the main menu where STATUS can be selected DSU III AR User Manual 73 Chapter 11 Testing Table 11 A Messages from the DSU CSU m local loop signal Indicates good local No action required being received from unit properly LOOP IS NORMAL te telco connected to telco circuit Unit not receiving a Bad telco cable from Replace telco cable signal from the telco the DSU to telco jack from DSU to wall jack OPEN LOOP or bad circuit to telco If a problem persists contact telco provider Unit detects sealing Bad conductor in telco Replace telco cable current but no data cable from DSU to from DSU to wall jack signal from telco telco jack or bad If a problem persists circuit to telco contact telco provider Unit detects an Out of Telco is having Check remote unit Service or O ut of problems with DDS Contact telco service DOS OE F dition f ircuit te unit ider Ifa probl FROM NET rame condition from circuit or remote unit provider Ifa problem the telco is turned off or persists co

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