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Telenetics 326X V.34, V.32bis Series, V.34-SDC 326X Series Modem Diagnostic Tests

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6-10 Troubleshooting Guide

Troubleshooting

326X Series Modem Diagnostic Tests

The modem supports loopback, busy out, and retrain tests to assist you in isolating

network problems. These tests analyze the telephone line and the local and remote

modem’s performance. These tests can be initiated from the modem’s front panel,

using AT commands from an attached PC or terminal, or from a network

management system.

The following table shows the AT commands to initiate and terminate tests. The

steps following the table describe how to initiate and terminate each test from the

front panel. (Refer to your network management system documentation for

instructions on initiating and terminating tests from the network management

system.)

IMPORTANT: The tests described in this section cannot be run simultaneously.

Because each test interrupts data flow in a network, notify equipment users at both

the local and remote sites before starting tests.

For details on tests, refer to Chapt er 4 of the 326X Series Modem Reference Guide.

Test Description

AT

Command

Local Analog

Loopback

Tests the local modem’s transmit and receive circuits

by looping local DTE data from the modem’s

transmitter to its receiver.

&T1

Local Analog

Loopback Pattern

Tests the local modem’s transmit and receive circuits

with an internally generated test pattern.

&T8

Remote Digital

Loopback

Using local DTE data, this test examines the transmit

and receive circuits of the local and remote modems

and the telephone line.

&T6

Remote Digital

Loopback Pattern

Tests the transmit and receive circuits of the local and

remote modems and the telephone line.

&T7

Data Mode Pattern The modem uses internally generated test patterns to

provide data and separately test the inbound and

outbound halves of the transmission path.

Not

applicable

Local Digital

Loopback

Using the remote DTE data for the test, the telephone

lines and the remote modem circuits are tested.

&T3

Busy Out Allows the modem to appear busy to incoming calls. H1

Retrain Lets you manually retrain local and remote modems. O1

(Terminate) Terminates any test in progress. &T0

Contents

Main Notice Restricted Rights Notification for U.S. Government Users Restricted Rights Legend Notice Notice (continued) Proprietary Material Radio Frequency Interference Regulations Page Contents Page Page Page Page Page Using the Documentation Set Overview 326X Series Modem Family Product Family Model Numbers Documentation Target Audience Note to Programmers and System Developers How to Use the Documentation Set 326X V.34 Series Modem Reference Card (TELT0009-01) 326X V.34 Series Modem Users Guide (TELT0009) 326X Series Modem Reference Guide (TEL09925) References Trademarks Page Page Page Page Telenetics Customer Information Telenetics Customer Information (continued) Sales-Related Issues Comments about the Manual Chapter 1 About the Modem Page Figure 1-1. 326X Series Modem, Standalone Desktop Model Safety and Operational Notices Repair Lightning Operating the Modem from the Front Panel Selecting Programmed Option Sets Automatic Calling Interfaces (ACUs) AT A CU V.25bis ACU LPDA 2 ACU Managing a Modem Restoring Data Transmission ITU-T V.34 Compliant Modulation Mode V.34 Modulation Mode Characteristics Compatibility in V.34 Modulation Mode Synchronous Data Compression (SDC) Feature Automode/Multimode Feature Remote Configuration Error Correction and Data Compression Security Status Snapshots Adaptive Rate System Troubleshooting (V.54 and V.22bis Tests) Country-Specific Information NET Compliance CE Regulatory Marking Directive (93/68/EEC) Page Chapter 2 Installing the Modem Page Unpacking the Modem Figure 2-1. Unpacking the Modem Additional Equipment Required Choosing a Site Connecting the Modem Rear Panel Connectors Figure 2-2. 3260/3265 Modem Rear Panel Layout Figure 2-3. 3261/3266 Modem Rear Panel Layout Electrical InterfacesEIA/TIA-232 and ITU-TS V.35 Operating at V.34 DTE Rates Ferrite Cylinders Models 3261 and 3266 Dial Line Connections Figure 2-4. Attaching Ferrite Cable to the Modem Models 3267 and 3268 Figure 2-5. Installing a Ferrite Cylinder on an Audio Cable Figure 2-6. Installing a Ferrite Cylinder on a Power Cable Page Cabling the Modem 2-12 Installing the Modem Figure 2-7. 3260/3265 Modem Cabling Figure 2-8. 3261/3266 Modem Cabling Installing the Modem 2-13 Connecting the Modem to a Network Management System Figure 2-10. Connecting to a 9000-PC or 9000-UX NMS Figure 2-9. Connecting to a 9110 NMS Figure 2-11. Connecting Modems in a Daisy Chain Configuration Turning on the Modem Automatic Self-Test Handling Error Messages After Installing the Modem... Table 2-1. Self-Test Messages Page Chapter 3 Getting Started System Requirements for Software Upgrades Configuring and Operating the Modem If You Are Unsure of Your DTEs Data Format... Using the Front Panel Figure 3-1. Standalone 3260 Modem with Front Cover Closed 326x Ready Front Panel Display Table 3-1. 326X LEDs Navigating the Configuration Menu Tree Menu Structure Setting Configuration Options from the Front Panel Table 3-2. Front Panel Keys Status Displays Table 3-2. Front Panel Keys Using the Modem with a Network Management System (NMS) Using the AT Automatic Calling Unit (ACU) Using the Modem with an Async Terminal Using the Modem with a PC and Async Communications Software Other Call Establishment Methods V.25bis ACU for Sync or Async Applications NetView LPDA-2 ACU for Sync Applications Sync Dialing from an IBM AS 400 External Auto-Call Units Page Chapter 4 Configuring the Modem Overview Communications Software Package Operating Notes Configuring the Modem for Use with Communications Software Operating Notes General Notes Page 326XFAS T V.34 and 326XFAS T-SDC Notes If the Communications Software and Modem Do Not Operate... Preparing for Operation Reinitializing Memory from the Front Panel Reinitializing Memory Using the AT&F Command Configuration Option Sets What is an Option Set? Table 4-1. Option Set Summary326X V.32bis and V.34 Modems Table 4-2. Option Set Summary326X -SDC Modem Option Set Descriptions326X V.32bis and V.34 Modems Option Set 1Async Calls to Central Site Using the AT ACU Option Set 2Sync Answering Central Site Without an ACU Option Set 3Sync Calls to Central Site Using the V.25bis ACU Option Set 4Async Answering Central Site Without an ACU (Models 3260/ 62/65/67) Option Set Descriptions326XFAS T-SDC Modems Option Set 1Async Calls to Central Site Option Set 2Sync Dial A/B Restoral Option Set 3Sync Dial Only Option Set 4Sync Leased Line with Dial Restoral; No ACU (Models 3261/63/66/68) Configuring an Option Set Option Set Defaults Table 4-3. Option Set Defaults326X V.32bis and 326X V.34 Modems Table 4-3. Option Set Defaults326X V.32bis and 326X V.34 Modems (Continued) Parameter Option Set 1 Option Set 2 Option Set 3 Option Set 4 (3260/62/65/67) Option Set 4 Table 4-3. Option Set Defaults326X V.32bis and 326X V.34 Modems (Continued) Parameter Option Set 1 Option Set 2 Option Set 3 Option Set 4 (3260/62/65/67) Option Set 4 Table 4-4. Option Set Defaults326X-SDC V.34 Modem Option Option Set 1 Option Set 2 Option Set 3 Table 4-4. Option Set Defaults326X-SDC V.34 Modem (Continued) Option Option Set 1 Option Set 2 Option Set 3 326X V.32bis and 326XFA S T Modem Applicati on Examples For This Type of Application... Select... Option Set 1Async Calls to Central Site Using AT ACU Option Set 2Sync Answering Central Site Without ACU Option Set 3Sync Calls to Central Site, V.25bis ACU Synchronous Dialing from an IBM AS 400 Option Set 4Async Answering Central Site without ACU (Models 3260/62/65/67) Option Set 4Synchronous Leased Line Applications with Dial Restoral (Models 3261/63/66/68) 326XFAS T-SDC Modem Application Examples SDC Pre-Operation Notes Operational Requirements Optimizing Network Performance Configuring the Modem for SDC Operation Ensuring Optimum Network Performance in SDC Mode SDC Sample Applications SDC Option Set 1Async Calls to Central Site Using ATACU SDC Option Set 2Sync Dial A/B Restoral Figure 4-1. Single Channel Point-to-Point Digital Link Restoral (A/B Switch)Option Set 2 Figure 4-2. Single Channel Point-to-Point Digital Link Restoral (A/B Switch)Option Set 2 SDC Option Set 3Sync Dial Only Figure 4-3. 326X-SDC Dial-Only ApplicationOption Set 3 Figure 4-4. Bandwidth On DemandOption Set 3 SDC Option Set 4Sync Leased Line with Dial Restoral; N oACU (Models 3261/63/66/68) Figure 4-5. Point-to-Point Leased Line Application with Dial RestoralOption Set 4 Remote Access Reset Operation When Remote Access Reset Is Disabled Chapter 5 Using the AT Automatic Calling Interface Page What is the Attention (AT) Command Set? What Role Does Communications Software Play? Using AT Commands Entering AT Command Lines To enter a single AT command line: To enter multiple AT commands on a single command line: AT Command String Examples For Further Detail on AT Commands Table 5-1. Interpreting AT Command Strings Autobaud Feature The Escape Sequence(+++) Table 5-2. Valid Autobauding Character Formats To use the escape sequence with guard time: Non-Configuration AT Commands A/, Re-Execute Last Command ATA, Manual Answer ATD , Di al ATH, Hang Up ATI, Display Software Information ATO, Leave Command Mode AT*RD, Redial Last Number S-Registers Displaying and Changing S-Register Values S-Register Descriptions Page Page Page Page Page Page Using the AT Automatic Calling Interface 5-17 S-Register 97Break Signal Duration Stored in Nonvolatile Memory?: Yes Status-Only?: No Default: 0 (represents 1 second) Range: 0 - 39 Page Page Assumptions Troubleshooting The First Step Troubleshooting Steps 326X Series Modem Troubleshooting Guide Page Page Page Page Page Page 326X Series Modem Diagnostic Tests Initiating and Terminating Tests from the Modems Front Panel Synchronous Data Compression (SDC) Testing Page Appendix A Configuration Quick Reference Configuration Quick-ReferenceMenu Trees For More Detail Audience and Assumptions Figure A-1. The 326X Series Modem Menu Structure - Part 1 of 4 ATZ AT & W AT&Y ST ATD ATS LL Figure A-2. The 326X Series Modem Menu Structure - Part 2 of 4 EC/DC OPT'S EC=V.42 (A) DC= Enabled (A) Break=Destruct (A) Modem Flow=On (A) SL :Off A-4 Configuration Quick Reference Figure A-3. The 326X Series Modem Menu Structure - Part 3 of 4 RS FAST OP SR Figure A-4. The 326X Series Modem Menu Structure - Part 4 of 4 RA A-6 Configuration Quick Reference RC AT PN AT Tabl e A- 1. AT Commands, Cross-Referenced to Front Panel Option s A-8 Configuration Quick Reference Configuration Quick Reference A-9 A-10 Configuration Quick Reference Configuration Quick Reference A-11 A-12 Configuration Quick Reference Configuration Quick Reference A-13 A-14 Configuration Quick Reference Page A-16 Configuration Quick Reference Page Page Page A-20 Configuration Quick Reference Page Page Page Page Page Page Page Page Page A-30 Configuration Quick Reference Page A-32 Configuration Quick Reference Configuration Quick Reference A-33 A-34 Configuration Quick Reference Table A-2. Front Panel Configuration Options Configuration Quick Reference A-35 Table A-2. Front Panel Configuration Options (Continued) A-36 Configuration Quick Reference Performing Numeric Entry Page Dial Modifiers for Special Dialing Requirements Table A-4. Dial Modifiers Modifier Function Description Table A-4. Dial Modifiers (Continued) Modifier Function Description Result Codes Table A-5. Result Codes A-42 Configuration Quick Reference Table A-5. Result Codes (Continued) Word Form Response Numeric Form Response Page Configuring the Modems Dual In-line Package (DIP) Switches Table A-6. Rear Panel Switches Switch Number Setting Function Table A-6. Rear Panel Switches (Continued) Switch Number Setting Function Page Appendix B Cabling and Interface Pinouts EIA/TIA 232-D (Modem to Computer) Interface Table B-1. Modem/Computer Interface Connections Table B-1. Modem/Computer Interface Connections (Continued) Pin EIA/TIA 232-D ITU V.24 Signal Definition ITU Recommendation V.35 Modem-to-Computer Interface Figure B-1. -SDC Series Modem with ITU V.35 Interface ITU Rate V.35 Modem-to-Computer Interface Pinouts Table B-2. ITU V.35 Modem/Computer Interface Connections Pin V.35 Signal Definition Differences, EIA/TIA 232-D and ITU Rate V.35 Interfaces DIAL LINE, LEASE (PRIVATE) LINE, PHONE Connector Pinouts When a V.35 Electrical Interface is Selected... The Following Options Cannot Be Selected... Set: Table B-2. ITU V.35 Modem/Computer Interface Connections (Continued) Pin V.35 Signal Definition NC (Network Control) Port Pinouts Cabling Cable Considerations Table B-3. Network Control Port Connector Pinouts Table B-4. Maximum Cable Capacitance per Data Rate Table B-5. Telenetics DB-25 Low Capacitance Cables for 326X DTE Cable Diagnostics Table B-6. Vendor Wire for 326X Page Page Appendix C Country-Specific Information Contents (Continued) Country Support Installation Notes Models 3265/3266 All Models Page Page Page Page Page Page Page Operating Notes Standalone Modem Rear Panel Views 3260 Dial Only Modem 3260 Modem Rear Panel (Dial Only) Figure C-2. Figure C-1. Rear Panel Layout - 3260 (Dial Only) 3261 Modem Rear View (Leased Line, Dial Restoral) 3265 Dial Only Modem 3265 Modem Rear PanelView A Figure C-3. Country-Specific Information C-15 Country-Specific Information 3265 Modem Rear PanelView B Figure C-4 shows View B of the 3265 Modem. This version is used in Germany and Austria. Figure C-6. View D Rear Panel Layout - 3265 (Dial Only) Figure C-4. View B Rear Panel Layout - 3265 (Dial Only) 3265 Modem Rear PanelView C 3266 Modem (Leased Line with Dial Restoral) 3266 Modem Rear PanelView A Figure C-7. Country-Specific Information C-17 Country-Specific Information 3266 Modem Rear PanelView B Figure C-8 shows View B of the 3266 Modem. This version is used in Germany and Austria. Refer to the addendum, 326X Series Modem Cards, shipped with the backplane. Figure C-9. Figure C-8. Rear Panel Interface Pinouts Standalone Models 3260/65 and 3261/66 Interface Pinouts This section shows the pinouts for the standalone modems rear panel connectors. Dial Line Interface (Models 3260/3265) 2-Wire Leased Line Interface (Models 3260/3265) Phone Connector Interface (Models 3260/3265) Dial Line Interface (Models 3261/3266) Table C-3. Phone Line Interface (Models 3260/3265) Table C-4. Dial Line Interface (Models 3261/3266) 2-Wire Leased Line Interface (Models 3261/3266) 4-Wire Leased Line Interface (Models 3261/3266) Table C-5. 2-Wire Leased Line Interface (Models 3261/3266) Table C-6. 4-Wire Leased Line Interface (Models 3261/3266) Phone Connector Interface (Models 3261/3266) Card Models 3262/67, 3263/68 Backplane Interface Pinouts Dial Line Interface (All Card Models) Table C-7. Phone Line Interface (Models 3261/326) Table C-8. Dial Line Interface (All Card Models) 2-Wire Leased Line Interface (Models 3262/3267) 2-Wire Leased Line Interface (Models 3263/3268) Table C-9. 2-Wire Leased Line Interface (Models 3262/3267) Table C-10. 2-Wire Leased Line Interface (Models 3263/3268) 4-Wire Leased Line Interface (Models 3263/3268) Delayed and Forbidden Lists AustraliaDelayed Call Lists Table C-11. 4-Wire Leased Line Interface (Models 3263/3268) AustriaForbidden Call Lists BelgiumDelayed Call Lists FinlandDelayed Call Lists FranceDelayed and Forbidden Call Lists Hong KongDelayed Call Lists IrelandDelayed Call Lists NetherlandsDelayed Call Lists NorwayDelayed Call Lists SpainDelayed Call Lists Other Country-Specific Information Canada DOC Registration and Requirements Industry Canada Equipment Attachment Limitations Canadian Emissions Statement sur le mteril brouilleur du Canada. Rear Panel Pinouts TableC-13 des cribes PHONE connector pinouts for RJ jack types. 3265 Modem Table C-12 describes dial line connector pinouts for RJ jack types. Table C-12. DIAL LINE Connector Pinouts for Jack Operation Telco Option (AT&J) Table C-14. DIAL Line Connector Pinouts for Jack Operation Table C-15. PHONE Connector Pinouts for Jack Operation DenmarkBlind Dialing Hong Kong and United KingdomBABT Regulations Compliance with BS6328: Part 1: 1982 Section 8.3 Compliance with BS6328: Part 1: 1982 Section 8.7 Compliance with BABTSITS/82/01/C and BABT/SITS/ 82005S/D Compliance with BS6305 Clause 6.2, BS6320 Clause 7.2 Ringer Equivalence Number (REN) Compliance with BABT/SITS/83/08/A Clause 1.2 Compliance with BS6789: Section 6.1:1986 Clause 5.2 Compliance with BS6789: Section 6.1:1986 Clause 7.3.1.3 Compliance with BS6789: Section 6.1:1986 Clause 7.3.1.4 Compliance with DTI 83/009I Compliance with BS6301 Compliance with BABT SITS 83/009 Section D Installation of Telephone Socket Application for Installation of Telephone Socket U. S. A . FCC Registration FCC Regulations Dial Line Jack Types 6-Pin Voice Jack (Permissive) 8-Pin Data Jack (Programmable) Rear Panel Pinouts 3260 Modem TableC-17 de scribes PHONE connector pinouts for RJ jack types. X indicates the signal is active. Table C-16. DIALLINE Connector Pinouts for Jack Operation Table C-17. PHONE Connector Pinouts for Jack Operation 3261 Modem TableC-19 de scribes PHONE connector pinouts for RJ jack types. X indicates the signal is active. Table C-18. DIAL LINE Connector Pinouts for Jack Operation Table C-19. PHONE Connector Pinouts for Jack Operation Dial and Leased Line Transmit Levels Dial Line Transmit Level Leased Line Transmit Level Making Telephone-to-Modem Connections Connecting an Exclusion Key Telephone Declaring The Jack Type Using the Modular Nest Backplanes Busy Out Feature Table C-20. Backplane Pin Settings for Busy Out, Modular Nest 9 Table C-21. Backplane Pin Settings for Busy Out, Modular Nest 21 Page Figure C-10. Modular Nest Backplane Pin Locations (Modular Nest 21 Shown) Glossary Page Page Page Page Page Page Equipment Return Procedures Expiration of Lease Factory Repair Packaging Guidelines for Equipment Return Index