Multi-Tech Systems GPRS (MTMMC-G) 用户手册

Table of Contents

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)

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