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Table of Contents
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F) 3
Table of Contents
Chapter 1 – Introduction..............................................................................................................................................4
Chapter 2 – AT Commands .........................................................................................................................................5
General Commands...................................................................................................................................................5
Escape Commands..................................................................................................................................................16
Modem Connection Commands...............................................................................................................................17
Caller ID Commands................................................................................................................................................19
Callback Security Commands..................................................................................................................................19
Data Compression Commands................................................................................................................................20
Error Control Commands .........................................................................................................................................21
DTE Commands.......................................................................................................................................................23
Modulation Command..............................................................................................................................................24
Call Control Command.............................................................................................................................................25
Test Command.........................................................................................................................................................27
Chapter 3 – Voice Commands...................................................................................................................................28
Voice Commands Overview.....................................................................................................................................28
Configuration Commands ........................................................................................................................................28
Voice Commands.....................................................................................................................................................30
Speakerphone Commands ......................................................................................................................................37
Unformatted Form Reporting – Caller ID..................................................................................................................38
Voice Mode Shielded Codes....................................................................................................................................38
Chapter 4 – V.8 / V.8bis Commands .........................................................................................................................40
Chapter 5 – V.25bis Commands................................................................................................................................41
V.25bis Responses ..................................................................................................................................................42
Chapter 6 – S-Registers.............................................................................................................................................43
S-Registers ..............................................................................................................................................................43
Chapter 7 – Result Codes..........................................................................................................................................46
Chapter 8 – Setting Country/Regional Codes..........................................................................................................51
Index............................................................................................................................................................................52