Chapter 5 - S-Registers.................................................................................................... 49

5.1 Introduction...................................................................................................................................... 50
5.2 Reading and Assigning S-Register Values......................................................................................55
5.2.1 Examples of Assigning Values.................................................................................................. 56
5.2.2 Examples of Reading Values.................................................................................................... 56
5.3 AT Command and S-Register Summary......................................................................................... 56

Chapter 6 - Callback Security and

Remote Configuration...................................................................................................... 57

6.1 Introduction...................................................................................................................................... 58
6.2 Callback Feature Description .......................................................................................................... 58
6.3 Remote Configuration Description................................................................................................... 58
6.3.1 Initial Setup Procedures for Callback and Remote Configuration. ............................................ 58
6.3.2 Remote Configuration Procedures............................................................................................61
6.4 Remote Configuration and Callback Security AT Commands......................................................... 62
6.5 Remote Configuration/Callback Security S-Registers..................................................................... 63

Chapter 7 - DIP-Switch Settings...................................................................................... 65

7.1 Introduction...................................................................................................................................... 66
7.2 DIP-Switch Option Settings............................................................................................................. 66
7.3 Speaker Volume Control ................................................................................................................. 71
7.4 Recording Option Configurations .................................................................................................... 72

Chapter 8 - Warranty, Service and Tech Support.......................................................... 74

8.1 Introduction...................................................................................................................................... 75
8.2 Multi-Tech Systems, Inc. Warranty & Repairs Policies.................................................................... 75
8.3 Online Warranty Registration .......................................................................................................... 76
8.4 Replacement Parts.......................................................................................................................... 77
8.5 Technical Support............................................................................................................................ 77
8.6 Internet Sites ................................................................................................................................... 77

Appendixes....................................................................................................................... 78

Appendix A -- Upgrading Your Modem’s Firmware.......................................................................................79
Appendix B - Troubleshooting...................................................................................................................... 82
Apendix C - AT Command Summary ........................................................................................................... 87
Appendix D - V.25bis Operation................................................................................................................... 96
Appendix E - MultiModemBA Cables ........................................................................................................... 102
Appendix F - Regulatory Information............................................................................................................ 103
Index.................................................................................106