Multi-Tech Systems BL-Series AT Command Mode Operation, Registers, Testing Your Modem, Appendixes

Chapter 1 - Introduction and Description

Chapter 5 - AT Command Mode Operation

Chapter 5 may be the most important chapter of this manual. It begins with an introduction and discussion on Command Mode fundamentals. A flow chart is provided to illustrate Command Mode and On-Line Mode operation and the methods used in each mode. Next, there is a summary of the modem’s commands and responses. We then go into a detailed explanation of each modem command, providing examples where applicable.

Chapter 6 - S-Registers

Chapter 6 covers the modem's S-Registers, which enable the user to establish, read, and modify various modem options. All of the S-Registers are charted and explained, followed by instructions on accessing the S-Registers and reading or changing their values.

Chapter 7 - Callback and Remote Configuration

Chapter 7 documents instructions on how to operate the modem's Callback and Remote Configuration features; and the usage of LOGIN Passwords, Set-Up Passwords and Remote Escape Characters as network management tools.

Chapter 8 - Testing Your Modem

Chapter 8 covers the modem's built-in test features. These are: Power-on Self Test, Back-To-Back Test, Local Analog Loopback, Digital Loopback and Remote Digital Loopback Tests. We have included a description of each test and how to use each test procedure.

Chapter 9 - DIP-Switches

Chapter 9 covers the modem’s printed-circuit board options. Sixteen DIP-Switch settings and the modem's speaker volume control are explained in detail, including all default settings.

Chapter 10 - Warranty, Service & Technical Support

Chapter 10 provides statements on your five-year warranty, instructions for getting modems serviced at the factory, the procedure for downloading firmware upgrades via FlashROM, information about Multi-Tech's Bulletin Board ServiceBBS( ), a section on receiving technical support via the CompuServe/Internet forums and information on Multi-Tech's Fax-Back Service.

Appendixes

There are also several appendices at the end of this manual, most of which repeat information contained in the chapters, but in a more condensed form. These appendices can be used as a quick reference.

Appendix A - Troubleshooting

Appendix B - ASCII/HEX/Decimal Conversion Chart

Appendix C - Pulse Dial and Tone-Dial Frequencies

Appendix D - AT Command Summary

Appendix E - DIP Switch Summary

Appendix F - S-Register Summary

Appendix G - Result Code Summary

Appendix H - V.25bis Operation

Appendix I - Cabling Diagrams

Appendix J - RS-232 Interface Specifications

Appendix K - Regulatory Information

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