Table of Contents
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 3
Contents
Chapter 1 – Introduction ................................................................................................................................................ 9
Scope of This Document ............................................................................................................................................ 9
Related Documents .................................................................................................................................................... 9
Definitions .................................................................................................................................................................. 9
Chapter 2 – AT Command Features ........................................................................................................................... 10
Line Settings ............................................................................................................................................................ 10
Command Line ......................................................................................................................................................... 10
Information Responses and Result Codes ............................................................................................................... 10
Chapter 3 – General Behaviors ................................................................................................................................... 11
SIM Card Insertion and Removal Procedures .......................................................................................................... 11
Background Initialization .......................................................................................................................................... 11
About the Length of Phone Numbers ....................................................................................................................... 11
Chapter 4 – General AT Commands ........................................................................................................................... 13
Manufacturer Identification +CGMI ......................................................................................................................... 13
Request Model Identification +CGMM .................................................................................................................... 13
Request Revision Identification +CGMR ................................................................................................................ 13
Product Serial Number +CGSN .............................................................................................................................. 14
Select TE Character Set +CSCS ............................................................................................................................ 14
Phonebook Character Set +WPCS ........................................................................................................................ 14
Request IMSI +CIMI ............................................................................................................................................... 15
Card Identification +CCID ....................................................................................................................................... 15
Capabilities List +GCAP ......................................................................................................................................... 15
Repeat Last Command A/ ....................................................................................................................................... 15
Power Off +CPOF ................................................................................................................................................... 16
Set Phone Functionality +CFUN ............................................................................................................................ 16
Phone Activity Status +CPAS ................................................................................................................................. 17
Report Mobile Equipment Errors +CMEE ............................................................................................................... 17
Keypad Control +CKPD ......................................................................................................................................... 17
Clock Management +CCLK .................................................................................................................................... 18
Alarm Management +CALA .................................................................................................................................... 18
Chapter 5 – Call Control Commands .......................................................................................................................... 19
Dial Command D .................................................................................................................................................... 19
Hang-Up Command H ............................................................................................................................................ 20
Answer a Call A ...................................................................................................................................................... 21
Remote Disconnection ............................................................................................................................................. 21
Extended Error Report +CEER .............................................................................................................................. 21
DTMF Signals +VTD, +VTS ................................................................................................................................... 21
Redial Last Telephone Number DL ........................................................................................................................ 22
Automatic Dialing with DTR %D ............................................................................................................................. 23
Automatic Answer S0 ............................................................................................................................................. 23
Incoming Call Bearer +CICB .................................................................................................................................. 24
Single Numbering Scheme +CSNS ........................................................................................................................ 24
Gain Control +VGR, +VGT ..................................................................................................................................... 24
Microphone Mute Control +CMUT .......................................................................................................................... 26
Speaker & Microphone Selection +SPEAKER ....................................................................................................... 26
Echo Cancellation +ECHO ..................................................................................................................................... 27
SideTone Modification +SIDET .............................................................................................................................. 30
Initialize Voice Parameters +VIP ............................................................................................................................ 30
To Next Page
Loading...
