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DSU III TDM Manual

1. xiii List of Tables xv Chapter 1 Introduction Product Overview 1 1 DDS Operation S 1 2 Dial Backup Operation 1 3 Overview of Dial Backup Options 1 3 4 Wire Switched 56 Backup Option 1 3 2 Wire Switched 56 Backup Option 1 4 V 32 bis Backup 1 4 1B D Basic Rate ISDN Backup Option 1 4 Entering Dial Backup Mode 1 5 Loss of Sealing Current 1 5 Out of Service OOS Signal 1 5 No R ceive Signal num e Red RAA 1 5 1s or all 05 Condition 1 5 Conditions for Returning to the DDS Circuit 1 6 Warranty and Customer 1 7 Chapter 2 Installation Unpack Inspect Power Up 2 1 Receipt Inspection coed Rx des ans Ra e ee REA 2 1 ADTRAN Shipments Include 2 1 Customer Provides 2 2 Power Up tec srt ey ee oerte Ed na 2 2 Network
2. ERR pv PRESE br 7 7 Off Tests re te 7 7 Off Remtidl 4 521 4 2xIloucl v ELS ee or as 7 7 Chapter 8 Configuring Test Options JTesE ODUOBS lela t na 8 1 Test IMEUT 22 a M ee a heats 8 1 Remote Digital Loopback RDL 8 2 DBU Answer Test x ree RR Rex Een RE IE 8 3 Chapter9 Configuring Dial Options Dial OptUOLRSiz ue Eti e b ue tud e d ee e RETE e 9 1 Phone N mb t Ser de tace reti de 9 3 ISDN Dial 9 3 Setting the Service Profile Identifier SPID 9 3 Setting the Local Directory LOC Number 9 4 Dial Backup Options for All Models 9 4 Automatic s 9 4 Nu mber to Dial RIEN UI UVP 9 4 9 4 When Out of Service DOS 9 4 x DSU III TDM User Manual 61200063L1 20 Table of Contents No Receive RX Signal 9 4 No Sealing Current ee a eee a ass da 9 5 Whernallds70s MEI edes he er eg 9 5 Auto RESTOE Exe RASA P PRAES ER 9 5 Redial Counter 9 5 Bail Timer sent Ms Petits WAR Hee
3. 8 3 Figure 9 1 Dial 9 2 Figure 9 2 Editing a Stored Phone Number 9 3 Figure 10 1 Manual Command 10 1 Figure 11 1 Dial Options Menu 11 1 Figure C 1 DSU III TDM to Modem Interconnect C 1 Figure 0 1 232 D 1 xiv DSU III TDM User Manual 61200063L 1 20 List of Tables Table 3 1 Table 4 1 Table 4 2 Table 4 3 Table 10 1 Table A 1 Table A 2 Table A 3 Table A 4 Table A 5 Table B 1 Quick Key Functions 3 11 T st S lections S HE SS E ope d 4 6 Remote Tests Selections 4 20 Messages from the DSU CSU 4 27 Manual Commands 10 2 Pin Assignments for EIA 232 Connectors A 1 Pin Assignments for Main Connector A 2 Pin Assignments for Backup Connector A 2 V 35 Pin Assignments for Adapter Cable A 4 EIA 232 Pin Assignments for Adapter Cable A 5 Default Configuration for the DSU III TDM B 2 61200063L1 20 DSU III TDM User Manual XV List of Tables xvi DSU III TDM User Manual 61200063L1 20 Chapter1 Introduction PRODUCT OVERVIEW The ADTRAN DSU III TDM time division multiplexer e
4. D 1 Appendix E Specifications Summary E 1 61200063L1 20 DSU III TDM User Manual xi Table of Contents Appendix Glossary F 1 Index RN 1 xii DSU III TDM User Manual 61200063L 1 20 List of Figures Figure 1 1 Sample 64 kbps Application for DSU III TDM 1 2 Figure 3 1 Status Display Example 3 2 Figure 3 2 Example of Basic Menu Travel 3 9 Figure 3 3 DSU III TDM Front View 3 10 Figure 3 4 DSU Rear View 3 13 Figure 4 1 Normal Operation Before Initiating Loopback Test 4 2 Figure 4 2 Initiating a Test 4 3 Figure 4 3 Sample Test Status Displays 4 4 Figure 4 4 Complete Test Menu 4 5 Figure 4 5 DTE amp Loop Test 4 7 Figure 4 6 Initiating a DTE amp Loop Test 4 8 Figure 4 7 Loop Only Test 4 9 Figure 4 8 Initiating a Loop Only Test 4 10 Figure 4 9 DTE Only Test Diagram 4 11 Figure 4 10 Initiating a DTE Only Test 4 12 Figure 4 11 DTE with Test Pattern 4 13 Figure 4 12 Initiating a DTE Test wi
5. e Verify integrity of the DTE interface e Verify integrity of connection between DTE and DSU III TDM Initiating Follow the menu path outlined in Figure 4 10 to initiate a DTE ONLY test 1 DTE amp LO O P LL 2210 OP ONLY 1210 CAL UNIT 2 REMOTE UNIT 3 DBU CONNECTION Figure 4 10 Initiating a DTE Only Test Interpreting Test Results A BERT tester must be used to interpret the test results of a DTE ONLY test 4 12 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting DTE With Test Pattern For the DTE WITH test pattern the test pattern is generated using the DSU CSU internal test pattern generator This test can be used to detect deficiencies within the network interface Figure 4 11 illustrates the loop back point and the data paths for this test LOCAL TDM Test Pattern Generator Test Pattern Detector Figure 4 11 DTE with Test Pattern 61200063L1 20 DSU III TDM User Manual 4 13 Chapter 4 Testing and Troubleshooting Test Purpose A DTE test using a test pattern is used to verify the integrity of the network interface Initiating Follow the menu path outlined in Figure 4 12 to initiate a DTE test using a test pattern 3 DBU CONN ECTIO N 1 DTE amp LO O P LL 2 100 P ONLY RT 3 DTE ONLY 122047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 5 TEST PATTERN 6 SELF T
6. 2 3 Telco Connectors i RD re CREAR de E HR 2 3 Control Port tere eee ipid pr ies 2 3 DTEConnectOon 4 4 RE Ide d ED ER 2 4 Configuration iiie it eh tA Ade ed dee onis 2 5 Remote 2 6 61200063L1 20 DSU III TDM User Manual vii Table of Contents Chapter3 Operation Menu Structure rar er Ee e EUSEB 3 1 Status s RU UC uu Dd UR CR eu ee 3 2 Network Rate DTE Rate and Data Format 3 2 Dial Backup Information 3 3 Type of Dial Backup Service 3 3 Current Status of Dial Backup Mode 3 3 Multiplexer Stats 2 22 Ea eee 3 5 Errored Seconds 3 5 DSU and Network Status 3 6 Current DSU TDM Status 3 6 Current DDS Network Status 3 6 A RA E AR DRE PE NASA 3 7 Configuration CONFIG 3 7 Ale AUR eat 3 7 Basic Menit Travel se ue We n eee eee de 3 8 Front Panel tiis e Eee ter RAM TEM A A 3 10 LCD Window ascendant a e e AP 3 10 EDGE currere bee ER as dia doeet ud 3 10 Numeric Keypad per 3 10 Shit cote eh
7. 4 6 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting DTE amp LOOP LL Test Description The DTE amp 00 test splits the DSU III TDM into two separate DTE and loop interface sections and then loops the receive data of each interface back to its respective transmit data The DTE amp Loop test provides a bidi rectional loopback at the DSU CSU Figure 4 5 illustrates the loopback points and the signal paths for this test DTE LOCAL TDM DTE Loopback Local 4 wire Loopback Figure 4 5 DTE amp Loop Test 61200063L1 20 DSU III TDM User Manual 4 7 Chapter 4 Testing and Troubleshooting Test Purpose The DTE amp LooP test is used for the following purposes e Verify integrity of the DTE interface and cable e Provide a loopback for network tests Initiating Follow the menu path outlined in Figure 4 6 to initiate a DTE amp 00 test 1 DTE amp LO O P LL 2 L0 O P ONLY RT 1210 CALUNIT 2 TEST 2 REM TE UN IT 3 DBU CONNECTION Figure 4 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 4 8 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting 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 TDM to be tested from the remote site over the actual communication ci
8. EN ABLED SEAL CUR 1 DISA BLED 2 EN ABLED 7 W HEN ALL 15 05 1 DISA BLED 2 EN ABLED B AUTO RESTO RE RESTO RE TIM ER 0 0 FF 1 MIN 9 REDIA L CO UN TER EN TER REDIAL COUNT 5 A FA IL TIMER AUTO DBU FAIL IME 3X10 SEC B W AIT TO REDIAL W AIT TO REDIAL IME 10 SEC 2 W ire amp 4 W ire Dial Backup N ETW TYPE 1 AT amp T OTHER 2 05 SPRINT V 32 bis Dial Backup BUFFERED ERROR CONTROL 2 DIRECT 3 RELIABLE MN P 4 AUTO MNP 5 RELIABLE V 42 1 DISA BLED 6 REL V 42 MNP 2 XO N XO FF 7 AUTO V 42 MNP B CTS ONLY D FLO W CONTROL 4 RTS CTS 5 UN XON XOFF 1 DISA BLED M PRESSIO 2 EN ABLED ISDN Dial Backup AT amp T 5 55 2 NTDMS 100 3 N ATIO N ALISDN 1 SW ITCH TYPE Figure 9 1 Dial Options DSU III TDM User Manual 61200063L1 20 Chapter 9 Configuring Dial Options Phone Number The DSU III TDM has storage available for ten numbers of 36 digits each To edit a phone number reenter the entire number This process over writes the previously stored number Figure 9 2 shows the menu path used to access the PHONE NUMBER option Enter only the phone number do not add dashes parentheses or commas 1 N ETW TYPE p DTE OPTIONS B 5 OPTIONS TO RED N UM BER TO 1 PHO NE NUMBER EDIT 1 10 NNNNNN DIAL O PTIO N S STO RED N UM BER 9 STO RED N UM BER 10 DIRECTO RY NUM Figure 9 2 Editing a Stored Phone Number IS
9. MT ac OR sis rM dA RE 3 10 Quick ise E selene ene DE PUDE 3 11 Cancel sr rene Mme Ro Peut aE AUR Re ud oi 3 11 Up and Down Arrows 3 11 LED Description 3 11 Rear Panek EDS NE wales 3 13 Chapter4 Testing and Troubleshooting T st OVerview tr CET des e RU TH e aee 4 1 Initiating a Test etii ete ee ec PUE e ep Ret 4 3 Test Status Display e cse ere theme e net eot e 4 4 Exiting a TeSt ma a Eb 4 4 Local Unit diagnostics 4 6 eta edes us 4 7 Test Descriptor nni Teni E a A E e 4 7 Test Purposes yc Pas curse A E Ene o 4 8 Inrtiatitig stie E o EE 4 8 Interpreting Test Results 4 8 Loop Only RD art Rau Rap gb Be apelin 4 9 Test PULP OSC ci eese PECES eget ette tentia 4 9 viii DSU III TDM User Manual 61200063L 1 20 Table of Contents oo or uere ee RE t doleas ta 4 10 Interpreting Test Results 4 10 DEE Only e dire de a tes anie 4 11 Test PULP OSGi s ose ieu A RES CRURA sae EA IR 4 12 tatn ge zuo dresse pn eite Me r
10. RT 2 TEST 1 2 0 CALUN IT 3 DTE ONLY 2 5 TEST PATTERN 3 DBU CONNECTION 6 SELF TEST Figure 4 2 Initiating a Test Once a test is initiated Please Wait is displayed briefly followed by the STA TUS screen 61200063L1 20 DSU III TDM User Manual 4 3 Chapter 4 Testing and Troubleshooting Test Status Display The TEST STATUS display appears automatically during a test The TEST STA TUS display is similar to the status screen described in the section Status on page 3 2 with additional prompts for the type of test and the number of errors for tests with a test pattern Figure 4 3 on page 4 4 shows an example of a Test Status Display for a test with a test pattern W hile this menu is on the displa Press 1 to clear errors Press 2 to inectan error TEST PATTERN TST ERR LOOP 56K Use the Up and Down arrows DTE 56K SYNC to displa other status screens TR SR LLB RLB OFF OFF OFF OFF UNIT IN TEST LOOP ISNORMAL Figure 4 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 4 4 DSU III TDM User Manual 61200063L1 20 2 TEST 61200063L1 20 1 L0 CALUNIT 2 REMOTEUNI
11. section Network Connection on page 2 3 for more information Table A 2 Pin Assignments for Main Connector Pin Name Description 1 R1 Transmit Data from DSU to N etwork Ring 1 2 1 Transmit Data from DSU to N etwork Tip 1 3 6 N ot Used 7 Receive Data from N etwork to DSU Tip 8 Receive Data from N etwork to DSURing Table A 3 Pin Assignments for Backup Connector Pin Name Description 4 wire Switched 56 1 R1 Transmit Data from DSU to N etwork Ring 1 2 1 Transmit Data from DSU to N etwork Tip 1 3 6 N ot Used 7 T Receive Data from N etwork to DSU Tip 8 R Receive Data from N etwork to DSU Ring 2 wire Switched 56 V 32 bis and ISDN 13 N ot Used 4 N etwork Tip 5 N etwork Ring 6 8 N ot Used A 2 DSU III TDM User Manual 61200063L1 20 Appendix A Pinouts V 35 ADAPTER CABLE The V 35 adapter cable allows the DSU II TDM to interface with DTE equipment using the V 35 interface The cable supports data rates of 2 4 kbps to 64 kbps and is powered from 12 V supplied by the DSU III TDM The cable part number 1200063L6 is a 6 foot cable Electrical Interface DTE Standard V 35 signal interface DCE Standard EIA 232 signal interface Mechanical Interface DTE V 35 interface is provided on a M 34 male connector The pinout is shown in Table A 4 on page A 4 DCE 232 interface is provided on 25 pin male D connec
12. 00 RS CS Delay Long 4C 01 Copy Local DTE Configuration to Remote Unit 5F 0 Copy Port 1 Configuration to ther Ports 63 0 10 2 DSU III TDM User Manual 61200063L1 20 Chapter11 Dial O ptions DIAL OPTIONS The DiAL Options available in the dial menu 4 DIAL vary whether the DSU III TDM is connected to the DDS line and designated as the ANSWER or ORIGINATE unit or is currently in dial backup mode see Figure 11 1 Answer Unit Connected to DDS Line 1 DIALBACKUP COMMAND ACCEPTED O riginate Unit Connected to DDS line 1 DIALBACKUP 2 STAY ON LEASED 3 DBU ONLINE TEST During Dial Backup 1 HANG UP 2 STAY ON LINE Figure 11 1 Dial Options Menu 61200063L1 20 DSU III TDM User Manual 11 1 Chapter 11 Dial Options Answer Unit Connected to DDS Line Dial Backup The message COMMAND ACCEPTEDis displayed and the DSU III TDM waits for an incoming call When an incoming call is detected the DSU III TDM answers the call and enters dial backup Originate Unit Connected to DDS Line Dial Backup The DSU III TDM attempts dial backup connection One of the previously stored numbers can be used or a new number can be entered Stay on Leased The DSU III TDM remains on the leased line and does not enter dial back up mode DBU Online Test This option allows the dial backup connection to be tested manually with out interrupting the data on the DDS A stored number can be used or
13. 3 3 switch type 9 8 switched mode dialing E 1 T TD 3 12 TELCO 2 3 telco connectors A 2 pin assignments A 2 Test 3 7 test DTE only 4 11 DTE with test pattern 4 13 self 4 18 test pattern 4 16 test commands 4 6 Test from Telco 3 4 test mode TST 3 12 test options 5 1 configuration 8 1 test pattern 4 16 test status display 4 4 test timeout 8 1 testing 4 1 transmit clock 7 4 D 1 transmit data TD 3 12 TST 3 12 61200063L1 20 Index U unit dialing options 5 1 Unit in Test 3 6 unit test options 5 1 up arrow 3 8 3 11 user profiles 5 1 V V 32 bis backup option 1 4 V 32 bis 42 bis 1 4 V 32 DBU status 3 3 V 35 adaptor cable pin assignments A 4 V 35 adapter cable A 3 electrical interface A 3 mechanical interface A 3 V 35 adaptor cable power requirements A 3 V 35 connector 2 4 W wait to redial 9 6 Waiting for Call 3 4 3 6 warranty 1 7 DSU III TDM User Manual Index 5 Index Index 6 DSU III TDM User Manual 61200063L1 20 Product Support Information Presales Inquiries and Applications Support Please contact your local distributor ADTRAN Applications Engi neering or ADTRAN Sales Applications Engineering 800 615 1176 Sales 800 827 0807 Post Sale Support Please contact your local distributor first If your local distributor can not help please contact ADTRAN Technical Support and have the unit serial number available Technical Support 888 AADTRAN Repair and Return If ADTRAN Tech
14. 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 service The provision of telecommunications to customers by a common carrier administration or private operating agency using voice data and or video technologies SMART 16 An ADTRAN rackmount system that allows up to 16 devices such as DSU CSUs ISDN Terminal Adapters or T1 DSU CSUs to be mounted in a 19 inch or 23 inch cabinet SNMP simple network management protocol A control and reporting scheme widely used to manage devices from different vendors SNMP operates on top of the Internet protocol SR data set ready A signal on the EIA 232 interface that indicates if the com munications is connected and ready to start handshaking control signals so communications can begin switched In regards 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 communications systems The DSU III S2W and DSU III S4W are examples of Switched 56 DSU CSUs 61200063L1 20 DSU III TDM User Manual F 7 Appendix F Glossary 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 f
15. H 8 75 W 10 25 D Weight 3 lbs Power 115 VAC 60 Hz 8 Watts E 2 DSU III TDM User Manual 61200063L1 20 Appendix E Specifications Summary Environment Operating Temperature 0 to 50 C 32 to 122 F Storage Temperature 20 to 70 C 4 to 158 F Relative Humidity Up to 95 non condensing 61200063L1 20 DSU III TDM User Manual E 3 Appendix E Specifications Summary E 4 DSU III TDM User Manual 61200063L1 20 Appendix F Glossary 2047 A pseudorandom test pattern that is repeated every 2047 bits used to test DSU CSUs 511 A pseudorandom test pattern that is repeated every 511 bits used to test DSU CSUs 2 wire Switched 56 A Northern Telecom proprietary 56 kbps switched digital data service offered by telco service providers and delivered to users over a single pair of copper wires Compatible with the ADTRAN DSU III S2W and with the DSU III TDM 2 wire Switched 56 TDM option 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 Compati ble 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 amp T Publication 41458 An AT amp T specification titled Special Access Connections to the AT amp T Commun
16. INV CFG x 1 4 Normal Operation of the DSU III TDM PORTx requires that the local DTE RATE and DTE FORMAT be the same as the remote options on a port by port basis The INV CFG PORT message is an indication that one or both of these options is not configured the same on both ends on the indicated port To clear this error configure the local DTE RATE and DATA FORMAT options The remote options are updated automatically to match the local options Errored Seconds The number of errored seconds encountered up to a maximum of 255 in multiplexer frames is displayed Errored seconds can be caused by vari ous conditions including the following e Poor telco circuit e cabling to the DSU III TDM lt lt DSU III TDM malfunction The errored seconds can be cleared to 000 by pressing 1 while the errored seconds are displayed 61200063L1 20 DSU User Manual 3 5 Chapter 3 Operation DSU and Network Status Current DSU III TDM Status Possible messages indicating the current status of the DSU III TDM include the following Data Mode Unit in Test In data mode the data set ready SR and request to send RTS circuits are on and the DSU III TDM is ready to send data The DSU III TDM is currently in test mode Use the arrow keys to display the type of test being performed Current DDS Network Status For normal operation LOOP IS NORMAL should be displayed The status of the main telco line is indicated by one of th
17. MUX CONFIG BLOCK message is an indication that the multi plexer received invalid configuration information from the nonvolatile memory This condition may be cleared by performing a factory default on the unit then cycling power If this does not clear the error contact ADTRAN technical support see inside back cover 61200063L1 20 DSU III TDM User Manual 4 19 Chapter 4 Testing and Troubleshooting REMOTE UNIT DIAGNOSTICS The REMOTE UNIT submenu allows a remotely installed DSU to be placed into loopback Establish a call before performing any remote diagnostics See Table 4 2 for selections Table 4 2 Remote Tests Selections Front Panel Description 122047 PATTERN Standard 2047 random data pattern 2 511 PATTERN Standard 511 random data pattern 3 STRESS PTRN 1 DDS Stress Pattern 1 4 STRESS PTRN 2 DDS Stress Pattern 2 5 STRESS PTRN 3 DDS Stress Pattern 3 6 STRESS PTRN 4 DDS Stress Pattern 4 7 DATA FROM DTE Data from DTE 8 PO RT RDL Selects port to be looped back to the far end Test Patterns The test selections with test patterns use the internal pattern generator of the DSU III TDM to transmit and verify a test pattern over the DDS network see Figure 4 16 on page 4 21 The remote unit is placed in RDL automatically The DSU III TDM is capable of transmitting six test patterns with its built in test pattern generator For more information on the test patterns see the section DTE W
18. TDM User Manual 6 1 Chapter 6 Configuring Network Options 6 2 CAUTION For 64 kbps clear channel operation 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 option should be selected for both the local and remote DSU III TDM DSU III TDM User Manual 61200063L1 20 Chapter 6 Configuring Network Options Clock Source The CLOCK SOURCE options specify the timing source for the DSU III TDM The factory default setting is FROM NETWORK see Figure 6 2 which means the network receive signal is the timing source Selecting the MASTER option sets the DSU III TDM as the master timing source 1 LO O P RATE 2 CLOCK SOURCE 3 REMOTE CONFIG 1 ASTER 2 FROM N ETW O RK 3 OPTION S DIA L O PTIO 5 5 MANUALCOMMAND 2 REM Figure 6 2 Setting the Clock Source When operating on a DDS network the timing should be FROM NETWORK On point to point private network one DSU TDM must be set for MASTER the other set for FROM NETWORK 61200063L1 20 DSU III TDM User Manual 6 3 Chapter 6 Configuring Network Options Remote Configuration This option sets up the DSU III TDM to accept or reject remote configura tion commands Figure 6 3 shows the menu path for enabling dis abling remote configuration The factory default setting is ENABLED 6 4
19. a number entered manually NOTE DBU ANSWER TEST must be enabled on the far end to perform a DBU on line test Dial Options During Dial Backup Hang Up Terminates the dial backup connection and attempts to reestablish com munication on the DDS line Stay On Line The DSU III TDM remains in dial backup mode and returns to the main menu 11 2 DSU III TDM User Manual 61200063L1 20 Appendix A Pinouts EIA 232 CONNECTORS The DSU III TDM is equipped with four EIA 232 connectors labeled PORT 1 through PORT 4 Table A 1 shows the pin assignments for these connec tors For more information see the sections Rear Panel on page 3 13 and DTE Connection on page 2 4 Table A 1 Pin Assignments for EIA 232 Connectors Pin EIA Description 1 AA Protective Ground PG 2 BA Transmit Data SD 3 BB Receive Data RD 4 CA Requestto Send RS 5 CB Clear to Send CS 6 CC Data Set Ready SR 7 AB Signal G round SG 8 CF Received Line Signal Detector CD 9 12 Test Point 10 12 Test Point 15 DB Transmit Clock TC 17 DD Receive Clock RC 20 CD Data Terminal Ready TR 24 DA External TX Clock ETC 61200063L 1 20 DSU III TDM User Manual A 1 Appendix A Pinouts TELCO CONNECTORS The DSU III TDM has two eight position modular jacks labeled MAIN and BACKUP Table A 2 shows the pin assignments for the MAIN connector and Table A 3 shows the pin assignments for the Backup connector See the
20. from the network until the problem is corrected or it is certain the equipment is not malfunctioning 5 This unit contains no user serviceable parts 6 AnFCC 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 7 The following information may be required when applying to the local telephone company for leased line facilities Digital Facility Service Order Network Service Type Interface Code Code Jacks 56 kbps Digital Interface 04DU5 56 6 0F RJ 48S 64 kbps Digital Interface 04005 64 6 0 RJ 48S 8 In the event of equipment malfunction all repairs should be per formed by ADTRAN It is the responsibility fo users requiring ser vice to report the need for service to their distributor or ADTRAN See the inside back cover of this manual for information on contact ing ADTRAN for service FEDERAL COMMUNICATION S COMMISSION RADIO FREQUENCY INTERFEREN CE 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 interfer ence 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 th
21. 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 TDM sup ports the 56 64 kbps DDS service rate 1 2 DSU III TDM User Manual 61200063L1 20 Chapter 1 Introduction DIAL BACKUP OPERATION The DSU III TDM may be configured with optional dial backup cards This allows the TDM to back up the DDS circuit in the event of an inter ruption The TDM supports dial backup operation over 4 wire Switched 56 2 Wire Switched 56 1B D ISDN or analog V 32 bis public service telephone network PSTN when equipped with the appropriate dial backup module Contact your local telco provider to determine which services are avail able for your location The DSU III TDM equipped with a Switched 56 or ISDN module can auto matically or manually back up all four ports in the event of a DDS circuit failure Upon restoration of the DDS circuit the DSU III TDM can be au tomatically or manually returned to dedicated operation When using analog V 32 bis backup only port 1 is backed up When operating at a DDS loop rate of 64 kbps the TDM is capable of back ing up all four ports over the Switched 56 service if no more than 52 8 kbps of bandwidth has been allocated to the ports If more than 52 8 kbps of bandwidth has been allocated to the four ports the TDM turn
22. is then configured with that profile every time power is turned on or until the unit is reset The DTE RATE and DATA FORMAT options must be configured the same on both units for correct operation For this reason any NOTE change to these options on the local unit automatically updates the remote unit and these options do not appear in the remote configuration menus For detailed information on configuration see the chapters Configuring Network Options on page 6 1 Configuring DTE Options on page 7 1 Configur ing Test Options on page 8 1 Configuring Dial Options on page 9 1 and Man ual Command on page 10 1 A complete CONFIGURATION menu is shown in the enclosed insert 5 2 DSU III TDM User Manual 61200063L1 20 Chapter Configuring N etwork ptions NETWORK OPTIONS The NETWORK OPTIONS configuration parameters control the loop opera tion of the DSU III TDM 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 The DSU III TDM supports loop rates of 56 and 64 kbps shown in Figure 6 1 The default factory setting is 56 kbps 1 56 2 SO URCE 3 REMOTE CONFIG SC RAM BLER O FF N ETW ORK TEST OPTIONS 4 DIAL OPTIONS MANUALCOMMAND Figure 6 1 Setting Loop Rate Options 61200063L1 20 DSU III
23. should eliminate data errors caused by excessive delays in the DTE transmit clock receiver and transmit data driver When creating this cable at the DTE in terface EIA 232 connector tie transmit clock lead TC to external transmit ETC as shown DTE DSU Ill Pin 15 TC 24 No connection EIA 232 CONNECTOR Figure D 1 EIA 232 Connector 61200063L1 20 DSU III TDM User Manual D 1 Appendix D EIA 232 Connector D 2 DSU III TDM User Manual 61200063L1 20 AppedxE Specifications Summary SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incorporat ed in the DSU III TDM Network Interface Line rate 56k 64 kbps Physical interface RJ485 4 wire DTE Interface Four EIA 232 DTE connectors V 35 adapters available Port 1 2400 64 kbps synchronous 2400 57 6 kbps asynchronous Ports 2 3 and 4 2400 38 4 kbps synchronous asynchronous Switched Mode Dialing Stored number dialing Front panel keypad 61200063L1 20 DSU III TDM User Manual E 1 Appendix E Specifications Summary Backup Options Automatic or Manual 4 wire switched 56 2 wire switched 56 1 B D ISDN V 32 bis Diagnostics Network CSU DSU loopbacks User Local DTE and loop V 54 Test Patterns 2047 511 DDS stress patterns 1 through 4 Clocking Normal DDS or private network Private network master internal Private network master external Physical Dimensions 2 25
24. shown in the appendix ELA 232 Connector on page D 1 The EIA 232 interface should be used only for speeds up to 19 2 CAUTION kpbs Speeds over 19 2 kpbs should use the V 35 adapter 2 4 DSU III TDM User Manual 61200063L1 20 Chapter 2 Installation CONFIGURATION The DSU III TDM is configured from the front panel The DSU III TDM contains four different user profiles sets of configurations options that are stored in read only memory These profiles are listed in the appendix Configuration Profiles on page B 1 The unit is shipped from the factory with profile 1 default configuration loaded into the nonvolatile configuration memory If profile 1 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 requirements modify the default con figuration or select another profile more closely matching the desired con figuration and modify When anew profile is loaded or the existing profile is modified it is stored in the nonvolatile configuration memory The DSU III TDM is then con figured with that profile every time power is turned on or the unit is reset See the chapter Manual Command on page 10 1 for information on loading default configuration profiles Ports 1 to 4 are initially configured as follows DTE Rate naa oe e eR DTE 9 6K gt Sync
25. signal generated by the network indicates a device or devices in the network is out of service If the network has an excessive rate of er rors the DSU III TDMs can no longer communicate causing an out of sync condition and resulting in dial backup operation if this option is selected No Receive Signal This is an indication that the local loop copper pairs may be either open or shorted or the OCU in the telco central office is inoperative In a private network this may indicate that the transmitter of the remote DSU is inop erative All 1s or all 05 Condition This condition is usually generated by the network to indicate some device or devices on the network is inoperative Upon detecting an all 1s or all Os condition the DSU III TDM will initiate a handshake routine to deter mine whether the remote unit s DTE is the source of the all 1s or 0s condi tion or an actual network failure exists For more information see the chapter Configuring Dial Options on page 9 1 61200063L1 20 DSU III TDM User Manual 1 5 Chapter 1 Introduction Conditions for Returning to the DDS Circuit The DSU III TDM can be configured to revert automatically to the DDS circuit from the dial backup mode or wait to be returned to the DDS circuit manually Once the DSU III TDM enters dial backup mode the unit polls the DDS circuit once every 100 ms to determine if the condition causing the DDS circuit failure has been corrected Once the DSU III TDM det
26. the DSU back to the telco and is used to test the DDS circuit as well as the DSU CSU DTE data terminal equipment In the EIA 232C standard specification the EIA 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 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 dialing data terminal ready A control signal sent from the DTE to the DCE that indicates the DTE is powered on and ready to communicate DTR dialing allows a DSU CSU to dial a predetermined number when DTR goes high F 4 DSU III TDM User Manual 61200063L1 20 Appendix F Glossary FCC Part 15 of Class A Radiated and conducted emissions standards set for commercial and indus trial use FCC Part 15 of Class B Radiated and conducted emissions standards set for residential use FCC Part of 68 FCC Rules and regulations intended to provide protection of the telephone network from harm caused by connection of equipment to the network 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 int
27. 0 Hz receptacle 2 2 DSU III TDM User Manual 61200063L1 20 Chapter 2 Installation NETWORK CONNECTION Telco Connectors The DSUIII TDM has two eight position modular jacks labeled MAIN and BACKUP The MAIN connector provides connection to the dedicated DDS network See Table on page A 2 for the connector s pin assignments The second eight position modular jack labeled BACKUP provides con nection to the switched telco circuit The pinout for the BACKUP connector depends on the backup option selected The pinouts for each of the dial backup options are located in Table A 3 on page A 2 NOTE The connector labled BACKUP is only active if the DSU III TDM is equipped with a dial backup module Control Port The two RJ 45 eight pin modular connectors located on the rear of the unit and labeled CHAIN IN and CHAIN OUT arereserved for future use with the ADTRAN SNMP management software 61200063L1 20 DSU III TDM User Manual 2 3 Chapter 2 Installation DTE CONNECTION Connection to DTE equipment is provided by four EIA 232 connectors la beled PORT 1 through PORT 4 The maximum cables length recommended is 50 feet for EIA 232 The EIA 232 interface is provided on four standard DB 25 connectors See Table on page A 1 for the ELA 232 interface pin as signments The V 35 adapter 1200063L6 or 1200063L8 is recommended for data rates above 19 2 kbps If a V 35 interface is not used it may be necessary to use a special cable wired as
28. 1 PORT 1 is backed up to a max imum of 14 4 kbps synchronous For asynchronous operation the backup module may be configured to employ data compression so data rates higher than 14 4 kbps may be supported 1B D Basic Rate ISDN Backup Option ISDN service provides the customer with a switched 56 64 kbps circuit The default data rate for this option is 56 kbps The 64 kbps data rate may be accessed using the Smart Dial String as described in the chapter Config uring Dial Options on page 9 1 This option provides a U interface to the ISDN network 1 4 DSU III TDM User Manual 61200063L1 20 Chapter 1 Introduction Entering Dial Backup Mode When condition for entering dial backup mode is detected the Alarm led turns on and the buzzer sounds The buzzer alternates between 30 sec onds on 30 seconds off unless the DDS line is restored or it is disabled by using the Quick key and selecting TURN Orr BEEP See the section Front Panel on page 3 10 for more information on the Quick key The following conditions can be enabled to cause the DSU III TDM to enter dial backup mode Loss of Sealing Current Sealing current is a low voltage DC current provided by the central office CO to prevent corrosion of splices in copper wires used in the local loop Sealing current may also be used for local loop testing purposes An ab sence of sealing current generally is an indication that the loop is open Out of Service OOS Signal An OOS
29. 1 LO RATE 2 CLOCK SOURCE 1 N ETW ORK OPTONS 3 CO N FIG 3 REM O TE CONFIG 1 DISABLED 3 TEST OPTIONS 4 DIALOPTIONS 5 MANUALCOMMAND 2 REM O TE Figure 6 3 Enabling Disabling Remote Configuration DSU III TDM User Manual 61200063L1 20 Chapter Configuring ptions DTE OPTIONS The DTE OPTIONS menu is used to select the configuration parameters that control the operation of the DTE interface ports of the DSU III TDM After selecting DTE OPTIONS specify the port to be configured The DTE TIONS menu is then displayed with the specified port shown in the upper right corner Port 1 is the default SELECT PORT 1 4 1 The DTE RATE and DATA FORMAT options must be configured the same on both the local and remote units to function correctly NOTE For this reason any change to these options on the local unit automatically updates the remote unit and these options do not appear in the configuration menus of the remote unit DTE Rate This option sets the operating speed of the DTE interfaces All four ports support several different DTE rates however the combined total for all four ports cannot exceed the maximum bandwidth The maximum band width for a loop rate of 56 kbps is 52 8 kbps and 60 8 kbps for a loop rate of 64 kbps If the maximum bandwidth is exceeded the message MAx BANDWIDTH EXCEEDED is displayed The factory default setting is DTE 9 6K DTE rate options7 through E are available o
30. 1200063L1 20 Chapter 4 Testing and Troubleshooting Initiating Follow the menu path outlined in Figure 4 18 to place a remote DSU III TDM into loopback 12 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 1 LO CAL UN IT 2 REMOTE UNIT 3 DBU CONNECTION Figure 4 18 Initiating a Remote Test After selecting REMOTE UNIT from the menu the following prompt is dis played for entering the address for the remote unit Enter Test Unit Address XX Use the number keys to type the address of the remote DSU then press En ter The test pattern selections are displayed After a test pattern is select ed the system briefly displays Please Wait Test Results If the test is successful the Status menu is displayed If not Unable to Ex ecute Test is displayed Interpreting Test Results If the unit is functioning properly the following message is displayed TST ERR 00 61200063L1 20 DSU III TDM User Manual 4 23 Chapter 4 Testing and Troubleshooting DBU CONNECTION When the DSU III TDM is equipped with a dial backup option the DBU CoN NECTION option appears as one of the TEST menu selections This test allows the dial backup network to be tested while data is passing on the DDS When this option is selected choose a stored number or enter a number to dial After establishing DBU connection the DSU III TDM designated as the answer unitis placed into lo
31. 6 Shelf 61200063L1 20 DSU III TDM User Manual F 9 Appendix F Glossary F 10 DSU III TDM User Manual 61200063L1 20 Index Numerics 1B D basic rate ISDN 1 4 2 wire Switched 56 backup option 1 4 4 wire Switched 56 backup option 1 3 A abort call timer 10 2 Alarm ALM 3 12 all 1s or all Os condition 1 5 ALM 3 12 Answering Call 3 3 3 6 AT command echo 10 2 AT commands 4 6 AT long code 10 2 AT result code 10 2 AT short code 10 2 AT amp T 5ESS 9 8 auto restore 9 5 automatic DBU 9 4 B back space character 10 2 backup connector A 2 pin assignments A 2 backup options E 2 Call Disconnect 3 3 called unit busy 3 3 cancel 3 8 61200063L1 20 DSU III TDM User Manual cancel key 3 11 carriage return character 10 2 carrier detect CD 3 12 7 6 CD 3 12 Check Telco 3 6 clear to send CS 3 12 7 5 clock source 6 3 clocking E 2 compression 9 7 configuration 2 5 dial options 9 1 DTE options 7 1 local 5 1 network options 6 1 test options 8 1 configuration CONFIG 3 7 configuration profiles B 1 connector EIA 232 D 1 TELCO 2 3 V 35 2 4 CS 3 12 D data format 7 3 Data Mode 3 6 data set ready SR 7 7 DATAPATH 1 4 DBU answer test 8 3 DBU connection 4 24 DBU Line in RDL 3 4 DBU Online Test 11 2 Index 1 Index DBU Status Not Installed 3 3 DBU Test Pattern 3 4 DDS network status 3 6 diagnostics E 2 Dial 3 7 dial backup 11 2 ISDN 9 3 status information 3 3 dial backup messa
32. Be 9 5 Wait to Redial c Ee RC ek ee RE 9 6 2 Wire and 4 Wire Dial Backup Options 9 6 Network Type eiu se AL 9 6 V 32 bis Dial Backup Options 9 6 Emor COMMON eco Ede elt eta c EN ERE une 9 6 Flow Control acd et Ga ee I Soa etr nue 9 7 Compression 25 di p DEMAIN EMIL 9 7 ISDN Dial Backup Options 9 8 Switch Type etude don ae as entra 9 8 Chapter 10 Manual Command Manual 0 10 1 Chapter 11 Dial Options Dial Options dde Se edic d LEM 11 1 Answer Unit Connected to DDS Line 11 2 Dial Backup iss t emp Een puer m Rie Ernie 112 Originate Unit Connected to DDS Line 112 Dial Backup erem detecte ISAT PAT Re me Ant s 112 Stay on Leased as secs ae eia BS 11 2 DBU Online EE erae 11 2 Dial Options During Dial Backup 11 2 oss Narr ee te ER PRE Ma CAE 11 2 Stay On Line i x hai a ee uc oe trt 11 2 Appendix A A 1 Appendix B Configuration Profiles B 1 Appendix C DSU to Modem Interconnect C 1 Appendix D EIA 232
33. DN Dial Backup If a clear channel 64 kbps circuit is required to back up the DDS circuit placing 4 at the end of the smart dial string phone number entered into Stored Number 1 8 causes the ISDN DBU mode to establish the backup connection at 64 kbps instead of 56 kbps For example 2059718000 4 Setting the Service Profile Identifier SPID For ISDN dial backup the service profile identifier SPID must be entered in Stored Number 9 The SPID is a sequence of digits used to identify ISDN terminal equipment to the ISDN switch when more than one ISDN set has been attached to the same central office line The SPID is assigned by the telco when the ISDN line is installed and normally resembles the phone number Generally the 5ESS custom switch is configured for a point to point net work and a SPID is not required SPID is required for 5ESS or Northern Telecom switches with ISDN National 1 interface 61200063L1 20 DSU III TDM User Manual 9 3 Chapter 9 Configuring Dial Options Setting the Local Directory LOC Number For ISDN dial backup the local directory number LOC must be entered in Stored Number 10 The LOC is assigned by the telco Dial Backup Options for All Models The DBU OPTIONS are used to select the modes of operation for the dial backup features such as under what conditions the unit enters dial back up and how the unit responds to a change in one of the dial backup con ditions There are 11 standard options avail
34. DSU Ill TDM Data Service Unit Part Number 1200063L1 Document Number 61200063L1 20A April 1999 Trademarks DATAPATH is a registered trademark of CAE electronics and is used by Northern Telecom under license ADRAN 901 Explorer Boulevard P O Box 140000 Huntsville AL 35814 4000 256 963 8000 1999 ADTRAN Inc All Rights Reserved Printed in U S A 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 bot tom of the equipment housing is a label that shows the FCC registra tion number and Ringer Equivalence Number REN for this equipment If requested provide this information to the telephone company 2 If this equipment causes harm to the telephone network the tele phone company may temporarily discontinue service If possible advance notification is given otherwise notification is given as soon as possible The telephone company will advise the customer of the right to file a complaint with the FCC 3 The telephone company may make changes in its facilities equip ment operations or procedures that could affect the proper opera tion of this equipment advance notification and the opportunity to maintain uninterrupted service is given 4 Ifexperiencing difficulty with this equipment please contact ADT RAN for repair and warranty information The telephone company may require this equipment to be disconnected
35. E 7 Signal G round 8 Carrier Detect DCE 9 12V 50mA Max DCE 10 12V 50mA M ax DCE 11 N ot Used 12 N ot Used 13 ETC Select DCE 14 N ot Used 15 Transmit Clock DCE 16 N ot Used 17 Receive Clock DCE 18 N ot Used 19 N ot Used 20 Data Terminal Ready DTE 21 N ot Used 22 N ot Used 23 N ot Used 24 External Transmit Clock DTE 25 N ot Used A 5 Appendix A Pinouts A 6 DSU III TDM User Manual 61200063L1 20 Configuration Profiles CONFIGURATION PROFILES The DSU III TDM contains four different user profiles sets of configura tions options stored in read only memory see Table B 1 on page B 2 The unit is shipped from the factory with profile 1 loaded into the nonvolatile configuration memory See the chapters Installation on page 2 1 and Man ual Command on page 10 1 for more information Profile 1 Profile 1 is configured for a 56 kbps loop rate with port speeds set at 9 6 kbps synchronous point to point operation Automatic DBU has been disabled for this configuration profile Profile 2 Use profile 2 for a 56 kbps loop rate with port speeds set at 9 6 asynchro nous point to point operation with an EIA 232 connector Automatic DBU has been disabled for this configuration profile Profiles 3 and 4 Profiles 3 and 4 are used for enabling dial backup using two DSU III TDM units One unit must be set for Answer and the other for Originate Use profile 3 to set the remote unit to Answer and profile 4 t
36. ESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 1210 CAL UNIT 3 DBU CONNECTION Figure 4 14 Initiating a Test Using a Test Pattern Interpreting Test Results During this test the display should show the following TST ERR 00 61200063L1 20 DSU III TDM User Manual 4 17 Chapter 4 Testing and Troubleshooting Self Test The SELF TEST verifies current operation of the DSU III TDM It can be per formed at any time and is recommended if there is any question about the DSU s health Test Purpose To determine if the DSU is functioning properly Initiating Follow the menu path outlined in Figure 4 15 to initiate a SELF TEST 1 DTE amp LO O P LL 2210 OP ONLY RT 3 DBU CONNECTION Figure 4 15 Initiating a Self Test Interpreting Test Results Once SELF TEST is activated the LEDs cycle on and off as the system runs the self test A pass or fail status will be displayed on the LCD along with a check sum indicating the current firmware revision 4 18 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Possible SELF TEST results are as follows PASS EPROM CHECKSUM FAILURE RAM CHECK FAILED LOCAL LOOP SELF TEST FAILED NONVOLATILE MEMORY FAILED MUX SELF TEST FAILURE INVALID MUX CONFIG BLOCK If any messages other than PASS or INvALID MUX CONFIG BLOCK are dis played contact ADTRAN technical support see the last page in this man ual The INvALID
37. EST Figure 4 12 Initiating a DTE Test with Test Pattern Test Pattern Descriptions The test patterns are described as follows 2047 Pattern 511 Pattern Stress Pattern 1 Stress Pattern 2 Stress Pattern 3 Stress Pattern 4 Standard 2047 pattern Standard 511 random pattern Stress pattern with alternating high and low ones densities Repeated pattern of 100 octets 1111 1111 followed by 100 octets 0000 0000 Stress pattern with alternating medium and low ones densi ties Repeated pattern of 100 octets 0111 1110 followed by 100 octets 0000 0000 Stress pattern with medium ones density Continuous series of octets 0011 0010 Stress pattern with low ones density Continuous series of octets 0100 0000 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Interpreting Test Results During this test the DSU III TDM displays DTE WITH TP TST ERR XX The first line of the display indicates the type of test being performed while the second line of the display indicates the number of errors accu mulated by the test pattern detector If errors occur during this test the test error count can be reset to zero by pressing 1 To verify proper operation of this test single bit errors can be injected into the transmitted test pattern by pressing 2 These errors ap pear on the TEST ERR display 61200063L1 20 DSU III TDM User Manual 4 15 Chapter 4 Testing and Troubleshooting Test Patter
38. HRONOUS operation sets the rate to 57 6 kbps for port 1 1 ASYN CHRON O US 2 SYNCHRONOUS 2 DATA FORMAT B TEST OPTIONS 4 DIAL O PTION S 5 MANUALCOMMAND Figure 7 2 Selecting Data Format 61200063L1 20 DSU III TDM User Manual 7 3 Chapter 7 Configuring DTE Options Transmit Clock The TRANSMIT CLOCK option selects the source of the clock used to transfer synchronous data from the DTE to the DSU III TDM Figure 7 3 on page 7 4 shows the menu path used to set the TRANSMIT CLOCK option The facto ry default setting is NORMAL 1 N ETW ORK 1 DTE RATE 2 DATA FORMAT 1 NORMAL 2 EXTERN AL 4 CS OPTIONS 6 SR OPTIONS 3 TEST OPTIONS 4 DIALO PTIONS 5 MANUALCOMMAND Figure 7 3 Transmit Clock Options To use the internal clock of the DSU III TDM select NORMAL To use the external transmit clock from the DTE select EXTERNAL The EXTERNAL clock option is normally used in modem tail circuit appli cations A DSU to modem interconnect diagram for this application is shown in the appendix DSU to Modem Interconnect on page C 1 The EXTERNAL clock option is also recommended when the EIA 232 con nector is used for 56 kbps and 64 kbps applications A special DSU cable diagram for this application is shown in the appendix EIA 232 Connector on page D 1 Using this option and special cable eliminates data errors caused by excessive delays in the DTE transmit clock receiver and transmit d
39. Options on page 6 1 Configuring DTE Options on page 7 1 Configuring Test Options on page 8 1 Configuring Dial Options on page 9 1 and Manual Command on page 10 1 Dial DIAL provides manual dialing functions Key in a number to dial or select one of the ten stored numbers See the chapter Dial Options on page 11 1 for more information 61200063L1 20 DSU III TDM User Manual 3 7 Chapter 3 Operation BASIC MENU TRAVEL Four function keys on the left side of the DSU III TDM keypad allow the vari ous menu branches to be entered exited and scrolled through The four func tion keys are defined below Enter Selects a displayed item Up Arrow Scrolls up a menu tree Down Arrow Scrolls down a menu tree 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 menu items with alpha selections The item flashes on and off to show it is the currently selected active choice Pressing either the Up or Down Arrow scrolls through the available menu items Press Enter to select the flashing item When a command is selected the DSU III TDM issues one of two commands Command Accepted Indicates a successful command processed by the DSU III TDM Command Rejected Indicates improper configuration attempted The command is not executed and no configuration change occurs The following example steps and Figure 3 2 on pa
40. SU III TDM are functioning properly Initiating Follow the menu path outlined in Figure 4 19 to initiate a DBU Connection test 2 TEST 2 REM OTE UN IT 3 DBU CONNECTION DIAL STO RED EN TER DIAL Figure 4 20 Initiating a DBU Connection Test Interpreting Test Results If the unit is functioning properly the DSU III TDM displays DBU TEST PATTERN TST ERR 0000 61200063L1 20 DSU III TDM User Manual 4 25 Chapter 4 Testing and Troubleshooting TROUBLESHOOTING This section is intended to provide a quick and easy means of diagnosing sus pected problems associated with local or remotely attached ADTRAN DSU CSUs Messages from the DSU CSU The DSU III TDM 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 4 3 are displayed on the LCD The STATUS menu must be selected in order for the unit to display NOTE status messages Pressing Quick returns to the Main menu where STATUS can be selected 4 26 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Table 4 3 Messages from the DSU CSU Message Meaning Probable Action Cause LO OP IS Good localloop Good localloop No action NORMAL signal being required unit received from the properly telco connected to telco circuit OPEN LOOP Unit not receiving Bad telco cable tel
41. T 3 DBU CONNECTION Chapter 4 Testing and Troubleshooting 1 DTE amp LO O P LL 2 LO OP ONLY RT 3 DTE ONLY 4 DTE W ITH TP 5 TEST PATTERN 6 SELF TEST 12 2047 PATTERN 22511 PATTERN 3 STRESS PTRN STRESS PTRN 5 STRESS PTRN 6 STRESS PTRN 4 7 DATA FROM DTE 8 PO RT RDL 1 DIALSTO RED 2 EN TER DIAL SELECT PO RT 1 4 122047 PATTERN 22511 PATTERN 3 5 55 PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 122047 PATTERN 22511 PATTERN 3 STRESS PTRN 1 4 STRESS PTRN 2 5 STRESS PTRN 3 6 STRESS PTRN 4 SELF TEST CHECKSUM XXXX SELF TEST PASS SELECT PO RT 1 4 1 1 XXXXXXXXXXX 2 EM PTY X XX XXXXXXXX Figure 4 4 Complete Test Menu DSU III TDM User Manual 4 5 Chapter 4 Testing and Troubleshooting LOCAL UNIT DIAGNOSTICS The local DSU III TDM can perform six different tests see Table 4 1 Table 4 1 Test Selections Front Panel Description Display DTE amp Loop LL TD RD and RX TX Loopbacks Loop O nly RT RT TX Loopback at N etwork Interface DTE O nly TX RX Loopback at DTE Interface DTE with TP RX RX Loopback with test pattern Test Pattern Transmit Receive Test Pattern Self Test Check Internal Components Resets Unit ExitTest Stops test returns to data mode TD Customer Transmit Data RD Customer Receive Data TX Network Transmit Data RX N etwork Receive Data
42. US screen displays the current operating data mode loop status DTE data rate and format and DTE interface lead status The current port number displays in reverse video in the upper right corner of the screen The current port can be changed in the network rate screen see Fig ure 3 1 by pressing the desired port number on the keypad Pressing the number of a port while any other screen is displayed causes the display to jump to the next screen The message DTE OFF SYNC appears if attempting to change to a port not in use Status displayed for this port This screen only DTE amp LOOP EH displayed during test Current port can be changed from this screen Test being performed 4 LOOP 64K EH Network Rate DTE 9 6 SYNC Rate Mode SW56 DBU STATUS Dial Backup Mode OPEN LOOP Dial Backup Status gt E gt gt bx Multiplexer Status ERRORED SECONDS Counter for Errored Second 000 Press 1 to Clear UNIT IN TEST EH lt DSU Operational Status OPEN LOOP j lt DDS Network Status Figure 3 1 Status Display Example Network Rate DTE Rate and Data Format The second screen of the Status display indicates the current loop rate either 56K or 64K on the first line The DTE data rate and format as selected in con figuration are shown on the second line While this screen is displayed the current port can be changed by
43. able with additional options for specific backup services Automatic DBU If AuTOMATIC DBU is enabled the DSU III TDM enters dial backup auto matically when one of the conditions for backup exists If AUTOMATIC DBU is disabled dial backup mode must be entered manually The factory de fault setting is DISABLE Number to Dial The NUMBER TO DIAL option offers a selection of stored numbers for the unit to automatically dial If the leased line fails and the DSU III TDM is set to originate it dials the number specified under this option to set up the dial backup line The factory default setting is DIAL STORED 1 Originate Answer This option specifies whether the DSU III TDM is the originate end or the answer end for dial backup operation One end must be set to ORIGINATE and the other to ANSWER The factory default setting is ANSWER When Out of Service OOS When enabled the DSU III TDM enters backup mode when an out of ser vice or TDM out of sync condition is detected The factory default setting is ENABLE No Receive RX Signal When enabled this option allows the DSU III TDM to enter backup mode when a loss of signal is detected The factory default setting is ENABLE 9 4 DSU 11 TDM User Manual 61200063L1 20 Chapter 9 Configuring Dial Options No Sealing Current When enabled the DSU III TDM enters backup mode when a loss of seal ing current is detected The factory default setting is ENABLE When all 1s 0s When
44. assing on the DDS In order for this test to be performed DBU ANSWER TEST must be enabled on the remote see Figure 8 3 If DBU ANSWER TEST is not enabled the remote unit will not accept a DBU test from the other end 1 N ETW ORK OPT 2 DTE OPTIONS 1 TEST TIM EO UT 2 RDL EN DIS 1 LOCAL 3 CON FIG 3 TEST OPTIONS 2 REMO TE 3 DBU ANS TEST 1 DISABLED 2 EN ABLED 4 DIAL OPTIONS 5 MANUAL Figure 8 3 DBU Answer Test 61200063L1 20 DSU III TDM User Manual 8 3 Chapter 8 Configuring Test Options 8 4 DSU III TDM User Manual 61200063L1 20 Chapter9 Configuring Dial O ptions DIAL OPTIONS The DiAL OPTIONS menu stores up to ten phone numbers and defines the dial backup operation of the DSU III TDM when the DDS circuit fails Figure 9 1 shows the full DIAL OPTIONS menu Specified items are restrict ed to specific configurations or operation 61200063L1 20 DSU III TDM User Manual 9 1 Chapter 9 Configuring Dial Options ISTO RED NUMBER TO 1 NUMBERS EDIT 1 10 1 INNNNNNN ISDN Dial Backup 4 DIALO PTIO N S 9 2 EDIT SPID STO RED N UM BER 9 IN UM BER INNNNNNN EDIT LOC STO RED N UM BER 10 DIRECTO RY NUM INNNNNNN AUTO MATIC DBU 1 DISA BLED 2 EN ABLED 2 N UMBER TO DIAL 1 DBU WITH 1 2 DBU WITH 2 3 0 RIG IN AN SW 1 DBU ORIGIN ATE 2 DBU AN SW ER 4 W 005 1 5 EN ABLED 2 DBU OPTIONS 5 0 RXSGNL 1 DISA BLED 2
45. ata driver 7 4 DSU III TDM User Manual 61200063L1 20 Chapter 7 Configuring DTE Options Clear to Send CS Options The CS OPTIONS menu is used to select one of two different control modes for the CS lead Figure 7 4 on page 7 5 shows the menu path used to access the CS OPTIONS menu The factory default setting is FoLLows RS Forced On The CS lead remains on and request to send RS is ignored as long as the unit is synchronized and able to pass data Follows RS The CS state matches the RS state No data can be received from the DTE device until RS is activated The CS lead only follows RS when the unit is able to pass data for example when the unit it on line and properly syn chronized 1 N ETW ORK OPT 1 FO RCED ON 5 CD OPTIONS 3 TEST O PTION S 5 MANUALCOMMAND Figure 7 4 Selecting Clear to Send CS Options 61200063L1 20 DSU III TDM User Manual 7 5 Chapter 7 Configuring DTE Options Carrier Detect CD Options The CD OPTIONS menu is used to select one of two different control modes for the receive line CD lead The default factory setting is NORMAL see Fig ure 7 5 on page 7 6 Forced On The CD lead remains active all the time Normal The CD lead is active only when frame synchronization has been achieved and data is received from the far end If a configuration problem has been detected such as a port not configured the same on both ends of the net work CD remains off until the error is co
46. c Keypad The numeric keypad contains the numbers 0 through 9 and alpha characters A through F which are used to activate menu items Numbers 0 through 9 are used to enter parameters 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 num ber display the menu item using the Up and Down Arrows press Shift and then the letter Press Enter to select the item Ifa key is pressed without using Shift the numbered item becomes active instead of the alpha item If this happens repeat the correct procedure 3 10 DSU III TDM User Manual 61200063L1 20 Chapter 3 Operation Quick During most operations the Quick key returns immediately to the main menu During a test the Quick key displays the exit test screen During dial backup Quick displays a menu with options to HANG UP or STAY ON THE LINE The Quick key functions are defined in Table 3 1 Table 3 1 Quick Key Functions TDM Status Pressing Quick Key Displays Normal Operation TOP MENU During Dial 1 HANG UP Backup 2 STAY ON LINE During Test 1 EXIT TEST 2 DISPLAY STATUS Dial Backup 12 GO TO BACKUP Condition Exists 2 STAY ON LEASED Cancel Stops the current activity and returns to the previous menu Repeat until the desired menu level is reached When a submenu item is displayed press Cancel to exit the current display and return to t
47. co a signal from from the DSU to cable from DSU to telco telco jack or bad walljack Ifa circuit to telco problem persists contact telco provider NO RX SIGNAL Unit detects Bad conductor Replace telco sealing currentbut telco cable from cable from DSU to no data signal DSU to telco jack wall jack Ifa from telco or bad circuitto problem persists telco contact telco provider 005 Unit detects an Telco is having Check remote OOF FROM NET Outof Service or problems with unit Contact O ut of Frame DDS circuit or telco service condition from the remote unit is provider telco turned off or disconnected CHECK TELCO UN E Transmit receive pair reversal detected Telco wall jack wired incorrectly Switch wire pairs in wall jack or contact telco service provider TEST FROM TELCO Telco activated a loopback to test the DDS circuit Telco is testing circuit W ait until test is complete or contact telco service provider 61200063L1 20 DSU III TDM User Manual 4 27 Chapter 4 Testing and Troubleshooting 4 28 DSU III TDM User Manual 61200063L1 20 Chapters Configuration verview LOCAL AND REMOTE CONFIGURATION The DSU III TDM can be configured locally using the front panel or com munications can be established with a remote DSU so the front panel of the local DSU can be used to configure the remote DSU Selecting the REMOTE option allow
48. d operations support systems that is shared by customers PSTN also is called public network public switched network or public telephone network point to point A private circuit conversation or teleconference in which there is one per son at each end usually connected by some dedicated transmission modem RDL remote digital loopback receiver sensitivity The magnitude of the received signal necessary to produce objective bit error rate or channel noise performance remote configuration A feature designed into ADTRAN DSU CSU products that allow remote DSU CSU to be configured from a local DSU CSU or VT 100 compatible terminal remote V 54 test A diagnostic feature that allows testing of the DDS circuit by looping the remote DSU CSU back to the local DSU CSU RJ 45S Registered jack An 8 pin connector used for data transmission over stan dard telephone wire Single line 2 wire T R PR PC programmed data 8 position keyed F 6 DSU III TDM User Manual 61200063L1 20 Appendix F Glossary EIA 232C A set of standards specifying various electrical and mechanical characteris tics 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 func tions and connector pin assignments The standard applies to both synchro nous and asynchronous binary data transmission scrambler
49. e following messages 3 6 Answering Call Check Telco Going To DBU In Dial Backup LL Test From Telco Loop is Normal OOS OOF Open Loop Waiting for Call The DSU III TDM detects an incoming call The transmit and receive Tx Rx pairs of the loop connection are reversed The pairs should be swapped for normal operation This message is displayed briefly when the unit is switching from the dedicated service to dial backup mode The DSU is in dial backup mode An LL Test has been initiated from the telco The DSU is connected to the dedicated line The telco is transmitting an out of service code The DDS physical connection has been broken The DBU module is waiting for a call DSU 11 TDM User Manual 61200063L1 20 Chapter 3 Operation Test The TEST selection is used to control local and remote testing Select local or remote testing and select the type of test and test pattern when re quired See the chapter Testing and Troubleshooting on page 4 1 for more in formation Configuration CONFIG Configuration is used to select network and DTE operating parameters When a 64 kbps loop rate is selected a SCRAMBLE option submenu is dis played instead of the DTE RATE menu to control scrambling The CoNFIG menu branch is divided into several chapters for easier reference The di vision includes a brief overview chapter followed by a separate chapter for each submenu of the CoNFIG branch Configuring Network
50. e instructions may cause harmful interference to radio frequencies Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Shielded cables must be used with this unit to ensure compliances with Class A FCC limits Changes or modifications to this unit not expressly approved NG by ADTRAN will void the user s authority to operate the W MN 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 Depart ment of Communications Cet appareil nuerique respecte les limites de bruits radioelectriques appli cables aux appareils numeriques de Class A prescrites dans la norme sur le materiel brouilleur Appareils Numeriques NMB 008 edictee par le ministre des Communications CANADIAN EQUIPMENT LIMITATIONS Notice The Canadian Industry and Science Canada label identifies certi fied equipment This certification means that the equipment meets certain telecommunications network protective operational and safety require ments The Department does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment ensure that it is permissible to be con nected to the facilities of th
51. e local telecommunications company The equipment must also be installed using an acceptable method of connec tion In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord Compliance with the above condi tions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadi an maintenance facility designated by the supplier Any repairs or alter ations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic wa ter pipe system if present are connected together This precaution may be particularly important in rural areas Users should not attempt to make such connections themselves CAUTION 2 should contact the appropriate electric inspection authority or an electrician as appropriate The Load Number LN assigned to each terminal device denotes the per centage 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 con sist of any combination of devices subject only to the requirement that the total of the Load Numbers of all d
52. ed Auto reliable V 42 LAPM or MNP operation Tries to use V 42 LAPM error control first MNP error control next If neither can be used then Normal operation is used This option is used to select the type of flow control used by the V 32 bis modem The factory default setting is CTS ONLY The flow control op tions are described as follows Disabled XOn XOff CTS Only RTS CTS Un XOn XOff Compression Flow control disabled Enables XOn XOff flow control Enables CTS flow control from DCE Enables CTS flow control from DCE and RTS from DTE Unidirectional XOn This option is used to select data compression for the V 32 bis operation when running asynchronously When enabled the effective data through put to speeds as high as 57 6 kbps may be achieved For synchronous ap plications the speed is limited to a maximum of 14 4 kbps The factory default setting is ENABLED 61200063L1 20 DSU III TDM User Manual 9 7 Chapter 9 Configuring Dial Options ISDN Dial Backup Options Switch Type This option selects the type of telco central office switch providing the ISDN service There are three options for ISDN switch types AT amp T 5ESS e NT DMS 100 National ISDN1 9 8 DSU III TDM User Manual 61200063L1 20 Chapteri0 Manual Command MANUAL COMMAND The MANUAL COMMAND option allows configuration commands to be en tered without using the menu structure A complete listing of manual commands is show
53. eeder circuit which may be digital or analog that provides an access line to a digital or analog network TDM time division multiplexing A method for sending two or more signals over a common transmission path by assigning the path sequentially to each signal each assignment being for a discrete time interval U interface A twisted pair subscriber loop carrying an ISDN 160 kbps digital signal between the ISDN central office and the NT1 at the customer premises 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 haz ards to life UL 1459 A UL rating that assures the connected equipment DSU CSU provides pro tection from current overloads and power line crosses 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 func tions of the Hayes Standard AT Command Set V 32 bis Higher speed CCITT standard for full duplex transmission on two wire leased and dial up lines at 4 8 7 2 9 6 1 2 and 14 4 kbps They do not rely on compression to achieve that high speed F 8 DSU III TDM User Manual 61200063L1 20 Appendix F Glossary VT 100 A non intelligent terminal or terminal emulation mode used for asynchro nous communications Used to configure the ADTRAN Smart 1
54. er mines that the problem has been properly corrected and the DDS circuit is stable it will wait for the amount of time specified in the restore timer 1 255 minutes before reverting to the DDS circuit Polling of the DDS circuit is non intrusive and return to the DDS circuit generally takes 2 3 sec onds The backup connection is maintained for one minute after the DDS circuit is restored The DDS circuit must be manually restored when TDM Out of NOTE Sync causes dial backup For more information see the chapter Configuring Dial Options on page 9 1 1 6 DSU III TDM User Manual 61200063L1 20 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 re fer 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 num bers listed on the last page of this manual 61200063L1 20 DSU III TDM User Manual 1 7 Chapter 1 Introduction 1 8 DSU III TDM User Manual 61200063L1 20 Chapter2 Installation UNPACK INSPECT POWER UP Receipt Inspection Carefully inspect the DSU III TDM for any damages that may have oc curred in shipment If damage is
55. er 9 4 out of service OOS signal 1 5 Out of Sync 3 5 P phone number 9 3 physical E 2 pin assignments backup connector A 2 EIA 232 A 5 main connector A 2 primary EIA 232 connector 1 telco connector A 2 V 35 A 4 power requirements A 3 power up 2 2 product overview 1 1 Q quick key 3 11 R RAM check failed 4 19 RD 3 12 rear panel 3 13 receipt inspection 2 1 receive data RD 3 12 redial counter 9 5 remote configuration 6 4 remote digital loopback RDL 8 2 Request to Send RS 3 12 return material authorization RMA 1 7 RS 3 12 S select user profile 10 2 self test 4 18 shift key 3 10 status dial backup mode 3 3 Status menu 3 2 status messages Answering Call 3 6 answering call 3 3 Call Disconnect 3 3 Called Unit Busy 3 3 Check Telco 3 6 Data Mode 3 6 DBU Line in RDL 3 4 DBU Status Not Installed 3 3 DBU Test Pattern 3 4 DDS network 3 6 Dialing 3 3 DU DBU Status 3 3 Going to DBU 3 3 3 6 Idle 3 3 In Dial Backup 3 3 3 6 Incoming Call 3 3 ISDN DBU Status 3 3 LL Test from Telco 3 6 Loop is Normal 3 6 No Rx Signal 3 3 No Wink from CO 3 4 Normal 3 5 Not Installed 3 4 OOS OOF 3 6 OOS OOF from Net 3 4 Open Loop 3 4 3 6 Out of Sync 3 5 SW56 DBU Status 3 3 Test from Telco 3 4 Unit in Test 3 6 V 32 DBU Status 3 3 Waiting for Call 3 4 3 6 stay on leased 11 2 stay on line 11 2 Index 4 DSU III TDM User Manual 61200063L1 20 store user profile 10 2 SW56 DBU status
56. erfaces for equipment vendors network providers and cus tomers Interworking with a public switched telephone network is retained local DTE and loop test A test initiated by the user that loops the DSU to the central office and back This is used to test the local DSU s DTE and local loop MIB management Information Base An informational database stored in devices that allow the device to provide management information to an SNMP man agement system or proxy agent multidrop A communications arrangement in which multiple devices share a common transmission channel although only one may transmit at a time 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 61200063L1 20 DSU III TDM User Manual F 5 Appendix F Glossary private network tributary clocking Clocking in which the timing is derived from the DDS loop private network master clocking Clocking in which timing is derived internally from the DSU private network master slaved to external clock Clocking in which timing is slaved to the DSU s external transmit clock PSTN public switched telephone network A direct distance dialing telephone net work that is available for public use The network is an integrated system of transmission and switching facilities signaling processors and associate
57. etween redial attempts to connect the backup line The maximum time which is manually entered is 99 seconds The factory default setting is 10 seconds WAIT TO REDIAL TIME SEC 2 Wire and 4 Wire Dial Backup Options Network Type This option selects the company providing the Switched Digital Service When US Sprint is selected an automatic Echo Canceller tone is emitted by the DSU III TDM when dialing Options include AT amp T MCI Other and US Sprint V 32 bis Dial Backup Options Error Control This option determines the type of error control to be negotiated at the start of a V 32 bis modem connection The factory default setting is BUFF ERED The options are described as follows Buffered Normal operation No error control Allows speed matching buffering and flow control Direct Direct operation No error control no buffer and no flow control Reliable MNP Reliable MNP operation Uses MNP error control Auto MNP Auto reliable MNP operation Tries MNP error control first uses normal operation if necessary Reliable V 42 Reliable V 42 LAPM operation Uses V 42 LAPM error control if V 42 error control cannot be used the call is disconnected 9 6 DSU III TDM User Manual 61200063L1 20 Rel V42 MNP Auto V 42 MNP Flow Control Chapter 9 Configuring Dial Options Reliable V 42 LAPM or MNP operation Uses either V 42 LAPM or MNP error control If neither can be used the call is disconnect
58. evices does not exceed 100 IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment please follow these basic safety precautions to reduce the risk of fire electrical shock or personal injury 1 Do not use this product near water such as near a bath tub wash bowl kitchen sink laundry tub in a wet basement or near a swim ming pool 2 Avoid using a telephone other than a cordless type during an elec trical storm There is a remote risk of shock from lightning 3 Do not use the telephone to report a gas leak in the vicinity of the leak 4 Useonly the power cord power supply and or batteries indicated in the manual Do not dispose of batteries in a fire They may explode Check local codes for any special disposal instructions SAVE THESE INSTRUCTIONS ADTRAN YEAR 2000 Y2K READINESS DISCLO SURE ADTRAN has established a Year 2000 program to ensure that our prod ucts and operations will correctly function in the new millenium ADT RAN warrants that all products meet Year 2000 specifications regardless of model or revision Information about ADTRAN s Year 2000 compli ance program is available at the following Web Site www adtran com Product Matrix www adtran com Y2Kfax html Faxback Document Line 256 963 8200 Y2K plans and product certifications are listed in the matrix Y2K Project Line 256 963 2200 E Mail year 2000 adtran com vi Table of Contents List of Figures
59. ge 3 9 illustrate how to select DSU III TDM options 1 Select Configuration CONFIG by pressing 3 and then pressing Enter 2 Select LOCAL or REMOTE CONFIGURATION by pressing the corresponding number and then pressing Enter 3 Use the Up and Down Arrows to view submenu items Choose an item on the submenu such as network options NETWORK OPT 5 select NETWORK OPT press 1 and then press Enter 6 select LOOP RATE options press 1 and then press Enter 3 8 DSU III TDM User Manual 61200063L1 20 Chapter 3 Operation 1 LOCAL 1 NETWORK OPT 1 LOOP RATE 3 CONFIG 2 DTE OPTIONS 2 CLOCK SOURCE 2 REMOTE 3 TEST OPTIONS 3 REMOTE CONFIG 4 DIAL OPTIONS 5 MANUALCOMMAND Figure 3 2 Example of Basic Menu Travel 61200063L1 20 DSU III TDM User Manual 3 9 Chapter 3 Operation FRONT PANEL The DSU III TDM faceplate is shown in Figure 3 3 Descriptions of the display keys and LEDs located on the front panel follow the figure DSU Ill TDM CANCEL Figure 3 3 DSU III TDM Front View LCD Window Displays menu items and messages in 2 lines by 16 characters Enter Selects active menu items To activate a menu item press the number of the item When the menu item is flashing press Enter to select it A submenu item is invoked or a configuration parameter is set The display of COMMAND AC CEPTED indicates a valid operation Numeri
60. ges 3 3 dial backup mode 11 1 dial backup mode status 3 3 dial backup operation 1 3 dial backup options 9 4 2 Wire amp 4 Wire 9 6 V 32 bis 9 6 dial options 5 1 11 1 configuration 9 1 during dial backup 11 2 dialing 3 3 digital data service DDS 1 2 1 5 down arrow 3 8 3 11 DSU Status 3 6 DSU to modem interconnect C 1 DTE amp loop LL 4 7 DTE interface 4 1 E 1 DTE interface parameters 5 1 DTE off sync 3 2 DTE only 4 11 DTE options 5 1 DTE pass through 7 2 DTE rate 7 1 factory default 7 1 DTE rates 7 2 DTE with test pattern 4 13 DTR initiated command timeout 10 2 DTR recognize delay 10 2 DU DBU Status 3 3 Index 2 DSU III TDM User Manual E 232 22 1 adaptor cable pin assignments A 5 EIA 232 connector 3 13 D 1 EIA 232 connectors E 1 electrical interface A 3 enter 3 8 enter key 3 10 eprom checksum failure 4 19 equipment provided 2 1 sold separately 2 2 error control 9 6 errored seconds 3 5 escape character 10 2 exit test 4 4 external clock 7 4 D 1 F fail timer 9 5 flow control 9 7 Follows RS 7 5 Forced On 7 5 7 6 7 7 front panel 3 10 enable disable 10 2 function keys 3 8 G Going to DBU 3 3 3 6 H hang up 11 2 Idle 3 3 In Dial Backup 3 3 3 6 Incoming Call 3 3 installation 2 1 61200063L1 20 invalid mux config block 4 19 ISDN dial backup 9 3 ISDN DBU status 3 3 L LCD window 3 10 LED description 3 11 line feed character 10 2 line rate E 1 LL Test F
61. ginate DBU when OOS Enable Enable Enable Enable DBU when N o RX Signal Enable Enable Enable Enable DBU when No Sealing Enable Enable Enable Enable Current DBU Auto Restore Timer 1 minute 1 minute 1 minute 1 minute DBU Redial Counter 5 5 5 5 DBU Fail Timer x10 3 seconds 3 seconds 3 seconds 3 seconds DBU Redial W ait Time 10 10 10 10 W hen all 1s 0s Disable Disable Disable Disable N etwork Type AT amp T AT amp T AT amp T AT amp T Error Control Buffered Buffered Buffered Buffered Flow Control V 32 CTS Only CTS Only CTS Only CTS Only Data Compression V 32 Enabled Enabled Enabled Enabled 61200063L1 20 DSU TDM User Manual B 3 Appendix B Configuration Profiles B 4 DSU III TDM User Manual 61200063L1 20 Appendixc DSU to Modem Interconnect MODEM TAIL CIRCUIT APPLICATION A DSU III TDM to modem interconnect diagram for a modem tail circuit application is shown in Figure C 1 lt EIC ETC RC CHU RD TD lt lt lt _ RD For Multi drop requirement DCD RTS RTS gt DCD Figure C 1 DSU III TDM to Modem Interconnect 61200063L1 20 DSU III TDM User Manual C 1 Appendix C DSU to Modem Interconnect C 2 DSU III TDM User Manual 61200063L1 20 Appendix D EIA 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
62. ha Eheim ERR d rer re t ein 4 26 Messages from the DSU CSU 4 26 Chapter5 Configuration Overview Local and Remote Configuration 5 1 Chapter 6 Configuring Network Options Network Options MORE Quer qub Poe PESE 6 1 Loop RATE eee Meer atr tede reri ire ese e ene e a 6 1 61200063L1 20 DSU III TDM User Manual ix Table of Contents Clock SOUL CO o UNES sce aiaa Qi M ee m ot 6 3 Remote Configuration 6 4 Chapter7 Configuring DTE Options Dte Optons states OL Vert E ERE HERPES e 7 1 PTE Rate ire eh NEA OR Aes o 7 1 Port Not Used 6E WE Bee YN We ue 7 2 DTE Pass Through Mode 7 2 ess ases t esce p eee deis 7 3 Transmit Clock See ee an det Re ek EE 7 4 Clear to Send CS Options 7 5 Forced ula Ee 7 5 FOLOWS RSS tc te he Meere orig canal Me ree ne 7 5 Carrier Detect CD Options 7 6 Forced Ori s reu PR me moine S 7 6 Normal rg e hat ertet 7 6 Data Set Ready SR Options 7 7 Forced On sos ce Eve tec as t aas 7 7 OP OOS ONIY eai currat Dan cott dia eee als e desta rs 7 7 Off Test Only 5
63. he previous menu Repeat until the desired menu level is reached Up and Down Arrows Up and Down Arrows scroll through the submenu items available in the current menu Submenu items display two at a time in a circular or wrap ping fashion When the submenu items are scrolled they continuously appear from beginning to end in a forward Down Arrow or reverse Up Ar row pattern LED Description The DSU III TDM has seven LED indicators RS CS TD RD CD ALM and TST These LEDs are identified as follows 61200063L1 20 DSU III TDM User Manual 3 11 Chapter 3 Operation 3 12 RS Request to Send CS Clear to Send TD Transmit Data RD Receive Data CD Carrier Detect ALM Alarm Indication TST Test Mode Reflects the status of the request to send pin of the EIA 232 connector for the currently selected port Reflects the status of the clear to send pin of the EIA 232 connector for the currently selected port This LED is active when the multiplexer transmits data to the DTE on the currently active port This LED is active when data is received from the DTE on the currently active port This LED is active when the multiplexer achieves frame synchronization and is ready to transfer data This LED is active whenever an alarm condition exists Alarm conditions include e Open loop on network e No frame synchronization e Unit in dial backup e Problem on dial backup line This LED is active wheneve
64. hronous CD ODpHOB conueniat eme s Normal CS OP HOM en redi rte te eit CH P aes Follow RS SR Option eee nnt ede ds Off OOS Only Tx Clock Option i 35e siete tete etti Normal LOOP Rate sacan esie e dn om eH Meer tie 56 kbps Clock Source ire nk nln From Network Remote Configuration Enabled Test DI OUt oie eit ates 0 Remote Digital Loopback RDL RDL Accepted 61200063L1 20 DSU III TDM User Manual 2 5 Chapter 2 Installation Remote Command The DSU III TDM can be controlled remotely from another DSU III TDM The Configuration CONFIG menu allows the DSU III TDM remote config uration capability to be enabled or disabled For more information see the chapter Configuration Overview on page 5 1 2 6 DSU III TDM User Manual 61200063L1 20 Chapter3 Operation MENU STRUCTURE The DSU III TDM uses a multilevel menu approach to access its many fea tures All menu operations are displayed in the LCD window The opening menu is the access point to all other operations There are four main menu branches STATUS TEST CONFIGURATION and DIAL Each main menu item has several functions and submenus to identify and access specific parameters These items are described in the following sec tions 61200063L1 20 DSU III TDM User Manual 3 1 Chapter 3 Operation Status The STATUS screen displays during tests and when there is no front panel op eration for 30 seconds The STAT
65. ications Network used to design compatibility into DSU CSU products AT amp T Publication 62310 An AT amp T specification titled Digital Data System Channel Interface Speci fication used to design compatibility in DSU CSU products 61200063L1 20 DSU TDM User Manual F 1 Appendix F Glossary BERT bit error rate test A known pattern of bits is transmitted and the errors received are counted to figure the bit error rate The idea is to measure the quality 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 CD carrier detect A signal generated by a modem or DSU CSU CD indicates its connection status If the CD light is on the device is speaking to another device channel service unit CSU A device used to connect a digital phone line T1 or Switched 56 line com ing 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 com mands sent from the central office A CSU regenerates digital signals It monitors them for problems and provides a way of testing the digital circuit clocking An oscillator generated signal that provides a timing reference for a trans mission link A clock prov
66. ides signals used in a transmission system to con trol the timing of certain functions The clock has two functions 1 to generate periodic signals for synchronization and 2 to provide a time base control port An interface to a device or system that allows users to issue commands per taining to dialing configuration diagnostics managements etc 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 CPE customer premise equipment All telecommunications terminal equipment located on the customer premises including telephone sets private branch exchanges PBXs data terminals and customer owned coin operated tele phones F 2 DSU III TDM User Manual 61200063L1 20 Appendix F Glossary CSA Canadian Standards Association The Canadian counterpart to the UL CS See CTS CSU See channel service unit CSU loopback A telco initiated test which loops the CSU portion of the DSU CSU back to the telco and allows the telco to test the DDS circuit as well as the CSU por tion of the customers DSU CSU CTS clear to send A signal on the DTE interface indicating that the DCE is clear to send data data compression A technique for encoding information so that fewer data bits are required to represent a given amount of data Compression facilitates the transmission of more data for a given amount of transmission ti
67. ith Test Pattern on page 4 13 4 20 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Data from DTE This test loops back the remote end data may then be transmitted and ver ified on any or all of the DTE ports depending on the physical connection See Figure 4 16 LOCAL TDM REMOTE TDM Figure 4 16 V 54 Remote Digital Loopback w Test Pattern 61200063L1 20 DSU III TDM User Manual 4 21 Chapter 4 Testing and Troubleshooting Port RDL After selecting PoRT RDL for the specific port the selected port is looped back at the far end Data entered into the selected port at the local end travels through the network to the remote end where it is looped back and transmit ted to the local end This allows the whole network to be tested on a port by port basis The other three ports function normally during this test See Figure 4 17 LOCAL TDM REMOTE TDM DTE Tx Tx Selected C Port Rx Rx Tx Tx Rx Rx masses gt Tx 525 22 Tx Hs Rx Rx Tx Rx Rx Figure 4 17 Port RDL Test Purpose Tests the local DSU the DDS circuit and the remote DSU 4 22 DSU III TDM User Manual 6
68. me and circuit capacity It also reduces the amount of memory required for data storage 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 transmis sion facilities dB decibel A unit of measure of signal strength usually the relation between a transmitted signal and a standard signal source 61200063L1 20 DSU III TDM User Manual F 3 Appendix F Glossary DDS digital data service also called digital data system A private line digital ser vice for transmitting data end to end at speeds of 2 4 4 8 9 6 and 56 kbps and in some cases 19 2 38 4 or 64 kbps The systems can use central hub offices for obtaining test access bridging legs of multipoint 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 DDS II Same as DDS but provides a slower speed secondary channel in addition to the main DDS channel DDS Stress Patterns 1 4 A series of test patterns designed to test DDS circuits Each pattern is designed to stress the DDS circuit in a particular manner to assure its reli ability DSU See data service unit DSU loopback A telco initiated test which loops
69. n The TEST PATTERN option converts the local DSU III TDM 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 4 13 illus trates the data paths for this mode Tx Error Error Rx Inject Inject Y Y Test Pattern Test Pattern T Generator Generator x Rx Ye dcl TX eR gt Tx m Rx qe CRX Y Y Test Pattern Test Pattern Detector Detector Rx 4 4 Error Error Clear Clear Tx Rx Figure 4 13 Test Pattern Only 4 16 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Test Purpose A TEST PATTERN test has the following purposes e Transmits user selected test pattern using an internal test pattern gen erator and compares the received data using internal test pattern de tector to detect whether there are any errors on the DDS circuit e njects errors and verifies the unit transmits data across the communi cation circuit to the remote unit e Helps determine from which direction the circuit is receiving errors Initiating Follow the menu path outlined in Figure 4 14 to initiate a test using a test pattern 1 DTE amp LO O P LL 2 100 P ONLY RT 1 2047 PATTERN 2 511 PATTERN 3 STRESS PTRN 1 4 STR
70. n in Table 10 1 on page 10 2 Figure 10 1 shows the menu path for manual command 1 N ETW ORK 1 LOCAL 2 DTE OPTIONS 3 TEST OPTION S DIALOPTIONS 5 MANUALCOMMAND CO MMAN D 00 FVALUE 00 Figure 10 1 Manual Command When MANUAL COMMAND is selected the following prompt is displayed COMMAND 00 After the command is entered the command number and the current set ting for the command are displayed COMMAND XX VALUE 00 61200063L1 20 DSU III TDM User Manual 10 1 Chapter 10 Manual Command At this time the setting may be changed by entering a new hexadecimal command number or it can be accepted by pressing Enter The system briefly displays COMMAND ACCEPTED and returns to the active menu Table 10 1 Manual Commands Command Description Command Value Load Factory Option O ption Set 1 8A 00 O ption Set 2 8A 01 O ption Set 3 8A 02 O ption Set 4 8A 03 Store User Profile Save to Profile 0 91 00 Save to Profile 1 91 01 Select User Profile Power Up Profile 0 93 00 Power Up Profile 1 93 01 Front Panel Disable AA 00 Enable AA 01 RS CS Delay Port 1 RS CS Delay Short Default 49 00 RS CS Delay Long 49 01 RS CS Delay Port 2 RS CS Delay Short Default 4A 00 RS CS Delay Long 4A 01 RS CS Delay Port 3 RS CS Delay Short Default 4B 00 RS CS Delay Long 4B 01 RS CS Delay Port 4 RSCS Delay Short Default 4C
71. nables the user to run four DTE ports over a single 56 64 kbps Digital Data Service DDS circuit One communications link is shared by up to four DTE devices by enabling each DTE to use the path exclusively at regular intervals In this way a circuit capable of a relatively high information transfer rate is sub divided into time slots to provide a number of lower speed channels Figure 1 1 on page 1 2 shows an example of a typical application using the DSU III TDM on a 64 kbps network Each of the four DTE devices is al lowed a portion of the dedicated circuit not exceeding the allowable band width of 60 8 kbps The major capabilities of the DSU III TDM include e 56 64 kbps leased line point to point DDS operation e Four independent DTE ports Synchronous or asynchronous operation on all ports Single port operation e Automatic remote configuration for critical options e Optional dial backup capability 4 wire Switched 56 2 wire Switched 56 ISDN or V 32 bis e Extensive test functions for testing of DTE amp Loop interfaces e Extensive status monitoring 61200063L1 20 DSU III TDM User Manual 1 1 Chapter 1 Introduction Optional Switched Backup 38 4K CENTRAL OFFICE swe DDS NETWORK 64K Loop Rate Optional Switched Backup Figure 1 1 Sample 64 kbps Application for the DSU Ill TDM DDS OPERATION DDS is a nationwide service that allows
72. nical Support determines that a repair is needed Technical Support will coordinate with the Customer and Product Service CaPS department to issue an RMA number For information regarding equipment currently in house or possible fees associated with repair contact CaPS directly at the following number CaPS Department 256 963 8722 Identify the RMA number clearly on the package below address and return to the following address ADTRAN Inc CaPS Department 6767 Old Madison Pike Progress Center Building 6 Suite 690 Huntsville AL 35807 RMA
73. nly for synchronous da ta See the appendix Configuration Profiles on page B 1 for more informa tion 61200063L1 20 DSU III TDM User Manual 7 1 Chapter 7 Configuring DTE Options Port Not Used Select PoRT NOT USED for any port not connected to a DTE device DTE Pass Through Mode Port 1 may be configured in a DTE pass through mode by selecting the menu option Fz PASS THRU see Figure 7 1 In this mode the DSU III TDM acts as a single port unit bypassing the multiplexer allowing port 1 to op erate at the full loop rate Ports 2 through 4 are not serviced NOTE Changing the DTE RATE on any port momentarily interrupts the flow of data on all four ports 1 PORT NOT USED 1 NETWORK OPTIONS 1 DTE Rate Synchronous Data Only SELECT PORT 1 4 PASS THRU Port 1 Only 3 TEST OPTIONS 6 SR OPTIONS 4 DIAL OPTIONS 5 MANUAL COMMAND Figure 7 1 DTE Rate Options If a 64 kbps main DDS line is switched to a 56 kbps backup line the DSU III TDM drops DTEs starting with port 4 until the CAUTION maximum bandwidth is no longer exceeded The most important DTE device should be connected to port 1 7 2 DSU III TDM User Manual 61200063L1 20 Chapter 7 Configuring DTE Options Data Format The DATA FORMAT option is used to select synchronous or asynchronous mode of operation for the DTE interface The factory default setting is SYNCHRONOUS see Figure 7 2 In DTE PAss THROUGH mode selecting ASYNC
74. o set the host unit to Originate 61200063L1 20 DSU III TDM User Manual B 1 Appendix B Configuration Profiles Table B 1 Default Configuration for the DSU Ill TDM Profile Numbers 00 1 01 2 02 3 03 4 Manual Command TDM Abort Call Timer 50 32H 50 32H 50 32H 50 32H Test Pattern Type 2047 2047 2047 2047 Front Panel En Dis Enable Enable Enable Enable Inactivity Timer Off off Off Off Network Options Loop Rate 56 kbps 56 kbps 56 kbps 56 kbps Scrambler Mode OFF OFF OFF O FF Remote Conf En Dis Enable Enable Enable Enable Clock Source From From N etwork N etwork DTE Options DTE Rate 56k loop 9 6 kbps 9 6 kbps 9 6 kbps 9 6 kbps DTE Data Format SYNC ASYNC SYNC SYNC Transmit Clock N ormal N ormal N ormal N ormal CS Options Follow RS Follow RS Follow RS Follow RS CD Option N ormal N ormal N ormal N ormal SR O ption 0005 0005 Only Only Test Options Test Timeout Off Off Off Off RDL En Dis RDL RDL Accepted Accepted DBU Answer Test Disable Disable Disable Disable Dial Options Automatic DBU Disable Disable Enable Enable DBU N umber to Dial 1 1 1 1 B 2 DSU III TDM User Manual 61200063L1 20 Appendix B Configuration Profiles Table B 1 Default Configuration for the DSU Ill TDM Profile Numbers 00 1 01 2 02 3 03 4 DBU O riginate Answer Answer Answer Answer O ri
75. opback and a test pattern is transmitted from the originate unit to the answer unit Receive data is checked for errors and the results dis played on the front panel While running this test errors may be injected by pressing 2 and cleared by pressing 1 During the DBU test the LEDs scan back and forth and the Test LED is on NOTE The DBU ANSWER test option must be enabled Enabling DBU ANSWER test does not affect the unit during dial backup Di LOCAL TDM REMOTE TDM UTE TK qu x Tx haut aee A Tx RE es Rx Rx PH Tx roii DTE De lt DTE Tales Tx TAS even Ge Tx 1 Test R Rx i Pattern an Generator DTE i DTE 1 TX 1 _ Tx Tx TX 1122222 Tx H DBU DBU Bx aoo a Rx Rx Rx 1 DTE 1 DTE Test 1 Pattern TEQUE d dae TX Detector eras se Tx Rx Answer Originate Figure 4 19 DBU Connection Test 4 24 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Test Purpose To verify the DBU circuit and DBU modules in both the local and remote D
76. ose n 4 12 Interpreting Test Results 4 12 DTE With Test Pattern 4 13 Test PULP OSC sd eere Pete dete tete ent ete 4 14 RATE Se 4 14 Test Pattern Descriptions 4 14 Interpreting Test Results 4 15 Test Pattern e Eden ERREUR ERE eL 4 16 DeStPUrpOse oto et a i du tot de Ed ies d 4 17 usos ee TIR yeahs aE E E a 4 17 Interpreting Test Results 4 17 Sele TOS tes sn merece bel ee n vi M RSS 4 18 ESE PULP OSE deg eot cde ee dese sa to E A 4 18 It tiatitig i ue Sere RON epe ese RE 4 18 Interpreting Test Results 4 18 Remote Unit Diagnostics 4 20 Test Patterns ont te IPIS RETAIL 4 20 DTE rete OE ER 4 21 Porte RDE A ai a ntm EUIS ones 4 22 Pest PULP OSE ne ens eere res Yat vea ed onere 4 22 dedos voter a od it eem 4 23 Test Results iia nn Rte etus pn ES Hu da 4 23 Interpreting Test Results 4 23 DBU Connection xui ES RR ERIT 4 24 J stP rposexsus oto esq S M BG edd Pium da 4 25 oe e Ce bedeutet 4 25 Interpreting Test Results 4 25 Troubleshoot ioi
77. pressing the desired port number on the key pad 3 2 DSU 11 TDM User Manual 61200063L1 20 Chapter 3 Operation Dial Backup Information Type of Dial Backup Service The type of dial backup service installed in the DSU III TDM is indicated by one of the following messages DU DBU Status ISDN DBU Status SW56 DBU Status V 32 DBU Status DBU Status Not Installed 2 Wire Switched 56 backup option installed 1 B D Basic Rate ISDN backup option installed 4 Wire Switched 56 backup option installed V 32 bis backup option installed No backup service option card installed in the DSU III TDM unit Current Status of Dial Backup Mode The current dial backup status is indicated by one of the following messag es Answering Call Call Disconnect Called Unit Busy Dialing Going to DBU Idle Incoming Call In Dial Backup No RX Signal 61200063L1 20 The DSU III TDM has detected incoming call messages and is starting the setup call procedure Call Disconnect message received from the remote end The unit called is currently busy and cannot be connected at this time This is an ISDN specific message The unit is dialing the selected number This message is briefly displayed before the unit enters dial backup mode Messages are not being transmitted but the service is immediately available for use Incoming call messages being received The unit is currently in dial backup mode The DSU III TDM detects
78. r the unit is in test mode DSU TDM User Manual 61200063L1 20 Chapter 3 Operation REAR PANEL The DSU III TDM is equipped with four ELA 232 connectors labeled PORT 1through PORT 4 used to connect to DTE equipment The EIA 232 inter face is provided on four standard DB 25 connectors Pin assignments for the DTE and network connections are described in the appendix Pinouts on page A 1 The DSU III TDM rear panel is shown in Figure 3 4 PORT 1 PORT 3 ON RB CHAIN CHAIN OUT PORT 2 PORT 4 EE EME L CONTROL 115VAC 60HZ 15A Item Function Port 1 Port 4 DTE connection Power switch Used to turn power on or off M ain telco connector Connection to the dedicated circuit Backup telco connector Connection to dial backup Chain in Reserved for future use Chain out Reserved for future use 115 VAC connection Power cord connection Figure 3 4 DSU TDM Rear View 61200063L1 20 DSU III TDM User Manual 3 13 Chapter 3 Operation 3 14 DSU III TDM User Manual 61200063L1 20 Chapter4 Testing and Troubleshooting TEST OVERVIEW The DSU III TDM performs a variety of diagnostic functions that isolate portions of the circuit to identify the problem source Tests may be initiat ed and terminated from the front panel or the DTE interface The unit also responds to standard DDS network tests initiated from telco test centers In addi
79. rcuit Figure 4 7 illustrates the loop back point and the signal paths for this test LOCAL TDM Figure 4 7 Loop Only Test Test Purpose The ONLY test is used to provide a loopback for network tests 61200063L1 20 DSU III TDM User Manual 4 9 Chapter 4 Testing and Troubleshooting Initiating Follow the menu path outlined in Figure 4 8 to initiate a LOOP ONLY test 1 DTE amp LO O P LL 2 L0 O P ONLY RT 2 REMOTE UNIT 3 DBU CONNECTION Figure 4 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 TDM 4 10 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting DTE Only The DTE ONLY test provides a method for testing both the DTE interface drivers and receivers of the local DSU III TDM For this test the DTE transmit data is connected to the DTE receive data at a point close to the physical DTE interface This test can be used to verify proper operation between the local DTE and the local DSU III TDM NOTE When this test is implemented the far unit receives an OOS OOF message from the network and enters an alarm state DTE LOCAL TDM Mud Figure 4 9 DTE Only Test Diagram 61200063L1 20 DSU III TDM User Manual 4 11 Chapter 4 Testing and Troubleshooting Test Purpose The DTE ONLY test is used for the following purposes
80. rom Telco 3 6 local configuration 5 1 local loop self test failed 4 19 local unit test 4 6 Loop is Normal 3 6 loop is normal 3 6 loop only RT 4 9 loop rate 6 1 loss of sealing current 1 5 M main connector pin assignments A 2 main connectors A 2 main menu 3 11 4 4 manual command 5 1 10 1 abort call timer 10 2 back space character 10 2 carriage return character 10 2 data terminal ready DTR 10 2 data terminal ready DTR tim er 10 2 escape character 10 2 front panel enable disable 10 2 line feed character 10 2 load factory option 10 2 network address lock 10 2 network address unlock 10 2 61200063L1 20 DSU III TDM User Manual Index select user profile 10 2 store user profile 10 2 mechanical interface A 3 menu structure 3 1 modem tail circuit application 7 4 C 1 multiplexer status 3 5 mux self test failure 4 19 N national ISDN1 9 8 network interface connection 2 3 interface parameters 5 1 network address lock 10 2 unlock 10 2 network interface E 1 network options 3 8 5 1 6 1 network rate 3 2 network type 9 6 no receive RX signal 1 5 No RX Signal 3 3 no sealing current 9 5 No Wink from CO 3 4 nonvolatile memory failed 4 19 Normal 3 5 Not Installed 3 4 NT DMS 100 9 8 number to dial 9 4 numeric keypad 3 10 Off OOS Only 7 7 Off Test Only 7 7 Off Test OOS 7 7 OOS OOF 3 6 OOS OOF from Net 3 4 Open Loop 3 4 3 6 operation 3 1 Index 3 Index originate 9 4 originate answ
81. rrected 3 CLOCK 1 LOCAL 2 REM O TE 3 TEST OPTIONS 4 DIALOPTIONS 5 MANUALCOMMAND 5 CD OPTIONS 1 FORCED ON 3 CONFIG Figure 7 5 Selecting Carrier Detect CD Options 7 6 DSU III TDM User Manual 61200063L1 20 Chapter 7 Configuring DTE Options Data Set Ready SR Options The SR OPTIONS menu is used to select the operating mode for the SR lead The factory default setting is OFF OOS ONLY Figure 7 6 on page 7 7 Forced On The SR control lead remains on regardless of the state of the network Off OOS Only The SR control lead is on except when the DSU III TDM receives an out of service condition from the network For more information on OOS see the section When Out of Service DOS on page 9 4 Off Test Only The SR lead is on except when the DSU III TDM is executing a test Off Test OOS The SR lead is on except during a test or when receiving an out of service condition from the network Off Remt Idle The local SR lead will follow the remote port TR lead 1 N ETW O RK 2 DTE O PTIO NS 5 CD OPTIONS 6 SR O PTIONS 1 FO RCED ON 2 0 FF O0 OS ONLY 3 0 FF TEST ONLY 4 0 FF TEST O 0S 5 OFF REM T IDLE 3 TEST OPTIONS 4 DIALO PTION S 5 MANUALCOMMAND Figure 7 6 Setting Data Set Ready SR Options 61200063L1 20 DSU III TDM User Manual 7 7 Chapter 7 Configuring DTE Options 7 8 DSU III TDM User Manual 61200063L1 20 Chapters Config
82. s configuration of the remote unit During remote configura tion the local DSU III TDM displays REMOTE CONFIG LINK ESTABLISHED before continuing to the CONFIGURATION menu This option disrupts the flow of data until remote configuration is exited The CONFIGURATION menu consists of a group of five submenus relating to a specific interface or function of the DSU III TDM 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 TDM contains four different user profiles sets of configura tions options that are stored in read only memory see Default Configura tion for the DSU III TDM on page B 2 The unit is shipped from the factory with profile number 1 default configuration loaded into the current non volatile configuration memory If profile 1 matches requirements for the system then no additional configuration is required to put the unit into service If profile 1 does not match system requirements it can be modi fied or one of the other profiles that more closely matches the system re quirements can be loaded into current memory When a different profile is loaded or the existing profile is modified it is stored in the current non 61200063L1 20 DSU III TDM User Manual 5 1 Chapter 5 Configuration Overview volatile configuration memory The DSU III TDM
83. s off ports during dial backup until the 52 8 kbps limit is not exceeded Ports are turned off in the sequence 4 3 and 2 For example in Figure 1 1 on page 1 2 ports 3 and 4 would be turned off during dial back up Overview of Dial Backup Options 4 Wire Switched 56 Backup Option This 4 Wire Switched 56 Service allows customers to pay for data connec tion only for the time the unit is active The regional operating companies provide the 4 wire local loop service to SW56 customers 61200063L1 20 DSU III TDM User Manual 1 3 Chapter 1 Introduction 2 Wire Switched 56 Backup Option DATAPATH6 is a Switched 56 service offered under various service names by the local service provider The services are generally provided by the Northern Telecom DMS SL100 family of central office switches DATAPATH allows the customer to pay for high speed data transfer up to 56 kbps only when the unit is active The dial up service is delivered via a 2 wire local loop that can be up to 18 000 feet at a signal level of 45dB V 32 bis Backup Option The V 32 bis 42 bis modem in an asynchronous mode can use V 42 bis data compression to make up for a slower connection rate V 42 bis in creases the effective data throughput from 14 4 kbps to as high as 57 6 kbps depending on the data type No compression is supported in syn chronous operation Due to the limited bandwidth of the V 32 modem employing this type of service limits dial backup to only PORT
84. sealing current but no data signal from telco DSU III TDM User Manual 3 3 Chapter 3 Operation 3 4 No wink from CO Not Installed OOS OOF From Net Open Loop DBU Line in RDL Test From Telco DBU Test Pattern Waiting for Call Switched 56 provider has encountered a service problem 4 wire Switched 56 No dial backup option is installed in the DSU III TDM Out of service signal or out of frame condition exists The call cannot be completed because either the called terminal or the called terminal s access line is out of service or is faulty 2 wire and 4 wire Switched 56 The physical connection to the backup line has been broken 2 wire and 4 wire Switched 56 Remote end has initiated a test The network provider has activated the CSU Loopback 2 wire and 4 wire Switched 56 The DSU III TDM is currently performing a test with a pattern The answering DSU III TDM is waiting on a call from the remote end DSU III TDM User Manual 61200063L1 20 Chapter 3 Operation Multiplexer Status Messages indicating the muliplexer status include the following Normal The multiplexer has achieved frame synchronization and is ready to pass data Out of Sync The multiplexer has not been able to achieve frame synchronization and cannot pass data Possible reasons for no synchronization are e Unit not connected to telco circuit e No multiplexer on far end of telco e Bad or noisy telco circuit e Test in progress
85. suspected file a claim immediately with the carrier and contact ADTRAN Customer and Product Service see the last page of this manual Keep the original shipping container to use for future shipment or verification of damage during shipment ADTRAN Shipments Include The following items are included in ADTRAN shipments of the DSU III TDM e DSU III TDM unit e An 68 position modular to 8 position modular cable The user manual e A 4position modular to 4 position modular cable if the 2 Wire Switched 56 V 32 bis or 1B D ISDN backup option is installed An 8 position modular to 8 position modular cable is included for 4 Wire Switched 56 backup options 61200063L1 20 DSU III TDM User Manual 2 1 Chapter 2 Installation Customer Provides For EIA 232 applications the customer must provide EIA 232 interface cable with standard 25 pin male D type connectors Cannon or Cinch DB 19604 432 For V 35 applications a six foot adapter cable part number 1200063L6 for male to male part number 1200063L8 for male to female is available from ADTRAN This cable converts the EIA 232 on the rear panel of the unit to V 35 The pinout for the V 35 conversion is shown in the appendix Pinouts on page A 1 Power Up Each DSU unit is provided with a captive eight foot power cord terminat ed by a three prong plug which connects to a grounded 115 VAC power receptacle Power to the DSU must be provided from a grounded 115 VAC CAUTION 6
86. th Test Pattern 4 14 Figure 4 13 Test Pattern 4 16 Figure 4 14 Initiating a Test Using a Test Pattern 4 17 Figure 4 15 Initiating a Self Test 4 18 Figure 4 16 V 54 Remote Digital Loopback w Test Pattern 4 21 Figute4 17 PORDE 222 a re ee ees 4 22 Figure 4 18 Initiating a Remote Test 4 23 Figure 4 19 DBU Connection Test 4 24 Figure 4 20 Initiating a DBU Connection Test 4 25 Figure 6 1 Setting Loop Rate Options 6 1 Figure 6 2 Setting the Clock Source 6 3 Figure 6 3 Enabling Disabling Remote Configuration 6 4 Figure 7 1 Rate Options 7 2 Figure 7 2 Selecting Data Format 7 3 Figure 7 3 Transmit Clock Options 7 4 Figure 7 4 Selecting Clear to Send CS Options 7 5 Figure 7 5 Selecting Carrier Detect CD Options 7 6 61200063L1 20 DSU III TDM User Manual xiii List of Figures Figure 7 6 Setting Data Set Ready SR Options 7 7 Figure 8 1 Setting Test Timeout 8 1 Figure 8 2 Remote Digital Loopback 8 2 Figure 8 3 DBU Answer Test
87. this option is enabled the DSU III TDM monitors the receive data for strings of 1s or Os that are longer than the FAIL TIMER If this condition is detected the local DSU III TDM initiates a handshake routine with the remote unit to determine if the DTE is generating the constant data pattern or if the network has failed Auto Restore Once the DDS circuit is restored the DSU III TDM remains in backup until the DDS circuit is active for the length of time specified for the RESTORE TIMER The selection is entered in minutes up to 255 If set to 0 the DDS must be restored manually The factory default setting is 1 minute RESTORE TIMER 0 OFF _____ MIN Redial Counter This option sets the number of times the originate unit attempts to redial the answer unit if a busy or reorder is encountered while trying to estab lish dial backup The redial count which is manually entered has a max imum of 99 attempts The factory default setting is 5 ENTER REDIAL COUNT Fail Timer This option sets the amount of time the dedicated circuit failure condition must be active before the DSU III TDM attempts backup The maximum time which is manually entered is 99 seconds The factory default setting is 3 seconds AUTO DBU FAIL TIME SEC 61200063L1 20 DSU User Manual 9 5 Chapter 9 Configuring Dial Options Wait to Redial This option works in conjunction with the preceding Redial Counter set ting the amount of time b
88. tion it can run several tests such as local and remote loopbacks to aid in problem isolation 61200063L1 20 DSU III TDM User Manual 4 1 Chapter 4 Testing and Troubleshooting Un LOCAL TDM REMOTE TDM DTE NP tl ogee gt x TE 2262 Tx Tea oen Rx Rx cip mets Rx DTE DTE Mesa Tx Poe eese Rx Rx soo Rx UC Tx Tx DTE DTE ET Tx al Tx Tx won Tx Rx cisci Rx Bx gt Rx DTE DTE TX 2 TX Tx elsi Tx RX dieses Rx Rx Rx Figure 4 1 Normal Operation Before Initiating Loopback Test CAUTION All diagnostic tests disrupt data flow 4 2 DSU III TDM User Manual 61200063L1 20 Chapter 4 Testing and Troubleshooting Initiating a Test Initiate tests using the following procedure 1 Select TEST from the main menu by pressing 2 and then pressing Enter 2 Specify local or remote testing by selecting the corresponding num ber followed by Enter 3 Use the Up and Down arrows to view test options Select a test from the available options by pressing the corresponding number followed by Enter The example in Figure 4 2 shows the menu path for initiating a local DTE and Loop test 1 DTE amp LO O P LL 2 10 OP ON LY
89. tor The pinout is shown in Table A 5 on page A 5 Power Requirements Power is supplied on pins nine and ten of the DB 25 DCE connector as fol lows 12V Pin 9 50 mA max 12V Pin 10 50 mA max 61200063L1 20 DSU III TDM User Manual A 3 Appendix A Pinouts A 4 Table A 4 V 35 Pin Assignments for Adapter Cable Pin Description From A Frame Ground B Signal G round C Request to Send DTE D Clear To Send DCE E Data Set Ready DCE F Carrier Detect DCE H Data Terminal Ready DTE 1 N ot Used K N ot Used L N ot Used M N ot Used N N ot Used P Transmit Data A DTE R Receive Data A DCE S Transmit Data B DTE T Receive Data B DCE U External Transmit Clock A DTE V Receive Clock A DCE W External Transmit Clock B DTE X Receive Clock B DCE Y Transmit Clock A DCE Z N ot Used AA Transmit C lock B DCE BB N ot Used CC N ot Used DD N ot Used EE N ot Used FF N ot Used HH N ot Used N ot Used KK N ot Used LL N ot Used MM N ot Used NN N ot Used DSU III TDM User Manual 61200063L1 20 Appendix A Pinouts Table A 5 EIA 232 Pin Assignments for Adapter Cable 61200063L1 20 DSU III TDM User Manual Pin Description From 1 Frame G round 2 Transmit Data DTE 3 Receive Data DCE 4 Request to Send DTE 5 Clear to Send DCE 6 Data Set Ready DC
90. uring Test ptions TEST OPTIONS The TEST OPTIONS menu enables or disables different test modes and spec ifies the maximum test time allowed Test Timeout The TEST TIMEOUT option sets the length of time a DSU III TDM remains in a test mode before automatically returning to the data mode Enter the time out in two digit decimal value The range is 0 to 99 seconds The fac tory default setting is 0 which disables the timer so tests can run indefi nitely Figure 8 1 shows the menu path used to access TEST TIMEOUT 1 N ETW ORK 2 DTE OPTIONS 1 TEST TIM EO UT 2 RDL EN DIS 3 DBU ANS TEST EN TER TIM EO UT 0 O FF 00 SEC 2 REMOTE M DIALOPTIONS Figure 8 1 Setting Test Timeout 61200063L1 20 DSU III TDM User Manual 8 1 Chapter 8 Configuring Test Options Remote Digital Loopback RDL The RDL EN DIS option determines whether the DSU III TDM accepts a remote digital loopback RDL request from the far end of the circuit The factory default setting is RDL ACCEPTED Figure 8 2 shows the menu path used to access the RDL EN DIS option 1 N ETW O RK OPT 2 DTE OPTIONS 1 TEST TIM EO UT 1 RDLIG N O RED 3 TEST OPTIONS 2 RDLEN DIS 3 DBU AN S TEST 4 DIAL OPTIONS Figure 8 2 Remote Digital Loopback 8 2 DSU III TDM User Manual 61200063L1 20 Chapter 8 Configuring Test Options DBU Answer Test The dial backup connection can be tested while data is p

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