Contents

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MultiModemDSVD User Guide
Chapter 4: AT Commands, S-Registers & Result Codes
AT Commands...................................................................................................................... 23
AT Command Summary ..................................................................................................... 24
Voice Commands..................................................................................................................39
S-Registers.............................................................................................................................. 41
Result Codes.......................................................................................................................... 45
Chapter 5: Solving Problems
Introduction........................................................................................................................... 49
None of the Indicators Light ............................................................................................... 49
The Modem Does Not Respond to Commands ............................................................... 50
The Modem Dials But Cannot Connect............................................................................. 51
The Modem Disconnects While Online............................................................................. 52
The Modem Cannot Connect When Answering.............................................................. 53
File Transfer Is Slower Than It Should Be......................................................................... 53
Data Is Being Lost ................................................................................................................. 53
There Are Garbage Characters on the Monitor................................................................ 54
The Modem Doesn’t Work with Caller ID........................................................................ 54
Fax and Data Software Can’t Run at the Same Time ...................................................... 54
Appendix A: Regulatory Compliance
FCC Part 68 Telecom............................................................................................................ 56
FCC Part 15............................................................................................................................ 57
Industry Canada ................................................................................................................... 57
Fax Branding Statement....................................................................................................... 58
Canadian Limitations Notice .............................................................................................. 58
EMC, Safety, and R&TTE Directive Compliance............................................................. 59
International Modem Restrictions...................................................................................... 59
New Zealand Telecom Warning Notice............................................................................ 5 9
South African Notice............................................................................................................60
Appendix B: Technical Specifications
.................................................................................. 61
Appendix C: Loopback Tests
Introduction........................................................................................................................... 64
Local Analog Loopback Test (V.54 Loop 3) ...................................................................... 64
Remote Digital Loopback Test (V.54 Loop 2)................................................................... 65
Local Digital Loopback Test (V.54 Loop 2)....................................................................... 66
Appendix D: Warranty, Service, and Technical Support
Limited Warranty ................................................................................................................. 68
Online Warranty Registration............................................................................................. 68
Service .................................................................................................................................... 68
North American Products............................................................................................ 68
International Products .................................................................................................. 69
Technical Support................................................................................................................. 69
Internet Sites.......................................................................................................................... 70
Ordering Accessories ........................................................................................................... 70