Troubleshooting a, Overview | Paradyne 3830 specification

Troubleshooting A

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Overview

This appendix points out basic problems that can occur when operating a 3830 modem. Use Tables A-1 through A-5 to check out these problems. If you are having data communication difficulties, such as periodic character loss, random errors, or constant format errors, use the loopback tests associated with the &T command. With these tests you can usually isolate the fault in your system by using the process of elimination. If problems continue to occur, contact your service representative.

3830-A2-GB91-30

August 1998

A-1

Image 87

Paradyne 3830 manual Troubleshooting a, Overview

Contents

Comsphere 3800 Series Modems Model Series Modems Model Comsphere Trademarks Warranty, Sales, and Service Information Important Safety Instructions Safety Instructions F FC FC F CCC C FC CC FC C C United States Government Requirements and Equipment Return Comsphere 3800 Series Modems ± Model Canada Switched Telephone Network Comsphere 3800 Series Modems ± Model Table of Contents Appendices AT Command Set and S-Registers Figures List of Figures Tables List of Tables How to Use this Manual PrefaceObjectives and Reader Assumptions Related Documents Overview Introduction Features Model 3830 Front Panel Status Indicators LEDs Label Color Indicates Model 3830 LEDs Rate Model 3830 LEDs Label Color Indicates Comsphere 3800 Series Modems ± Model August Model 3830 Modem Package Model 3830 Modem Installation Customer- Supplied Equipment Model 3830 Installation Model 3830 Rear Panel Dial-Line Connection DTE Connection Wire Leased-Line Connection AC Power Transformer ConnectionTelephone Connection Modem Power-Up Communications Software Installation Selecting Factory Configuration Options Type AT&Fy&Wn Recovering AT Commands Press Enter 25bis Applications Initialization Strings AT&T Exclusive Dialing for Datakit Applications Synchronous Leased-Line Applications Fax Operation Fax Operation Comsphere 3800 Series Modems ± Model Operating Modes AT Command Set and S-Registers Escape Sequence and Escape Guard Time Switching Between Data Mode and Online Command Mode Command Guidelines Result Codes Result Codes Connection at 7200 bps Connection at 16,800 bps AT Command List  ITU-T/Bell Mode Model 3830 AT Commands  AT Command Recovery Mode Repeat Last Command  Answer Mode ATD9,5551234 Model 3830 AT Commands Dn  Dial DS=n  Dial Stored Number Model 3830 AT CommandsEn  Command Character Echo Hn  Hook Switch Control Mn  Speaker On/Off Model 3830 AT Commands  IdentificationLn  Speaker Volume  Return to Online or Data Mode  Tone Dial Model 3830 AT Commands Qn  Result CodesSn=r  Change S-Register Sn?  Display S-Register Extended Result Code Yn  Long Space Disconnect Zn  Reset and Load Active Model 3830 AT Commands Cn  LSD Control Fn  Select Factory Default Configuration Options Model 3830 AT Commands Dn  DTR Action G0 Disable Option ValueGn  V.22bis Guard Tone Jn  Dial Transmit Type Ln  Leased Mode Comsphere 3800 Series Modems ± Model Model 3830 AT Commands Model 3830 AT Commands Sn  DSR Control Model 3830 AT Commands Tn  Tests Model 3830 AT Commands Vn  View Configuration Options Wn  Write Save to MemoryXn  Transmit Clock Source Model 3830 AT Commands Zn=x  Store Telephone Numbers \An  Maximum Frame Size\A3 Model 3830 AT Commands \Cn  Error Control Negotiate Buffer \Dn  CTS Control\Gn Modem to Modem Flow Control Break Buffer Control \Q2 Model 3830 AT Commands Nn  Error Control Mode Model 3830 AT Commands \Tn  No Data Disconnect Timer An  Error Control Fallback Character\ Xn  XON/XOFF Passthrough Flow Control Model 3830 AT Commands Bn  Modulation and Data Rate Model 3830 AT Commands Cn  MNP5 Data Compression Rn  DTE Rate″ Hn  V.42bis Compression Model 3830 S-Registers S0  Auto-Answer Ring Number Register List S5  Backspace Character Model 3830 S-Registers S2  AT Escape CharacterS3  Carriage Return Character S4  Line Feed Character S10  No Carrier Disconnect S7  No Answer TimeoutModel 3830 S-Registers S6  Blind Dial Pause S8  ``,º Pause Time for the Dial Modifier Model 3830 S-Registers S18  Test Timeout S26  RTS-to-CTS DelayS34  1800 Hz Training Tone S36  Rate Auto Originate Model 3830 S-Registers S35  Auto Redial Leased Line S38  DTR Cont Repeat Model 3830 S-Registers S37  Auto Redial S41  Dial-Line Rate Model 3830 S-Registers S39  Receive Buffer Disconnect Delay Model 3830 S-Registers S43  V.32bis Train S44  Leased-Line RateS45  Leased Line Transmit Level S47  Auto Dial Standby Model 3830 S-Registers S46  Bad Lines Auto Originate S49  Transmit Buffer Disconnect Delay Model 3830 S-Registers S48  Leased Line Carrier On LevelS51  DTE Remote Loopback CT140 S53  V.54 Address S55  Access from RemoteS56  Remote Access Password Model 3830 S-Registers S52  DTE Local Loopback CT141 S61  CT111 Rate Control Model 3830 S-Registers S57  Remote Access PasswordS58  Remote Access Password S59  Remote Access Password Model 3830 S-Registers S62  V.25bis Coding S63  V.25bis Idle CharacterS64  V.25bis New Line Character Model 3830 S-Registers S65  Line Current Disconnect S66  NMS Call MessagesS67  Directory Location 1 Callback S76  V.32bis Autorate Dial Line Model 3830 S-Registers S69  Make Busy Via DTRS74  Network Position Identification S75  Network Management Address S78  V.32bis Automode Dial Line Model 3830 S-Registers S77  DTR Alarm Reporting S82  V.32bis Autorate Leased Line S81  Leased Line Signal Quality Retrain Model 3830 S-Registers S84  AT Command Mode S88  Straps When DisconnectedS85  Fast Disconnect S90  DTE Rate = VF Rate Model 3830 S-Registers S89  V.42 ARQ Window Size Increase S93  RJ11 Cellular Adapt Model 3830 S-Registers S91  Cellular Enhancements Comsphere 3800 Series Modems ± Model August Troubleshooting a Symptom Action Table A-1Modem Health Modem ± DTE Connection Table A-2 Table A-3 Modem ± VF Connection Symptom Action Modem Ð DTE Connection Modem ± VF Connection Online Operation Table A-4 Leased-Line Operation Table A-5 Technical Specifications Technical Specifications B Compatibility Table B-1 Model 3830 Technical Specifications Description Power Error Control Table C-1 EIA-232-D Pin Assignments RS-232 Name Signal Circuit Pin Source FunctionPin Assignments C EIA-232-D Pin Assignments Signal Source Circuit Function VF Connector Pin Assignments Comsphere 3800 Series Modems ± Model Leased Center Comsphere 3800 Series Modems ± Model ITU-T V.25bis Dialing Commands Response D Call Request Commands Call Response Call Request with Number Provided CRNCall Request with Stored Memory Address Provided CRS Call Failure Indication CFI Call Connecting CNX Connect Incoming Call CIC Call Answer CommandsIncoming Call INC Disregard Incoming Call DIC Program Normal PRN Request List of Stored Numbers RLNList Stored Number Response LSN Command Response Valid VALInvalid INV Call Request Commands List Response Comsphere 3800 Series Modems ± Model Active Operating Glossary Asynchronous CSA DCE DOC FCC ITU-T JM8 PBX Pstn Xoff Comsphere 3800 Series Modems ± Model Glossary-12 Index Symbols Index-2 Index Index-4 DTR Index-6 Index-7 Index-8 Index-9 Index-10 Index-11 Index-12