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vii
Contents (continued)
The Escape Sequence—(+++) ................................................................. 5-5
Non-Configuration AT Commands .......................................................... 5-6
S-Registers ............................................................................................... 5-9
Chapter 6, Troubleshooting Guide
Introduction .................................................................................................. 6-2
Troubleshooting ............................................................................................ 6-2
326X Series Modem Diagnostic Tests .......................................................... 6-10
Synchronous Data Compression (SDC) Testing ...................................... 6-11
Appendix A, Configuration Quick Reference
Configuration Quick-Reference—Menu Trees ............................................ A-2
For More Detail ........................................................................................ A-2
Audience and Assumptions ...................................................................... A-2
Performing Numeric Entry ........................................................................... A-37
S-Register/AT Command Cross-Reference .................................................. A-38
Dial Modifiers for Special Dialing Requirements ........................................ A-39
Result Codes ................................................................................................. A-41
Configuring the Modem’s Dual In-line Package (DIP) Switches ................ A-44
Appendix B, Cabling and Interface Pinouts
Introduction .................................................................................................. B-2
EIA/TIA 232-D (Modem to Computer) Interface ........................................ B-2
ITU Recommendation V.35 Modem-to-Computer Interface ........................ B-4
ITU Rate V.35 Modem-to-Computer Interface Pinouts ........................... B-5
Differences, EIA/TIA 232-D and ITU Rate V.35 Interfaces .................... B-6
DIAL LINE, LEASE (PRIVATE) LINE, PHONE Connector Pinouts ........ B-6
NC (Network Control) Port Pinouts ............................................................. B-7
Cabling ......................................................................................................... B-7
Cable Considerations ............................................................................... B-7
DTE Cable Diagnostics ............................................................................ B-10
Appendix C, Country-Specific Information
Introduction .................................................................................................. C-3
Country Support ....................................................................................... C-3
Installation Notes .......................................................................................... C-4
Restricted Features Summary ....................................................................... C-5
Operating Notes ............................................................................................ C-12
Standalone Modem Rear Panel Views .......................................................... C-12
3260 Dial Only Modem ........................................................................... C-13
3261 Modem Rear View (Leased Line, Dial Restoral) ............................ C-13