User Manual

GM47/48 Technical description

BA/SEM/MS 02:0004 Rev B

5 AT Command Summary

The AT standard is a line-oriented command language. "AT" is an

abbreviation of ATtention and it is always used to start sending a

command line from a TE to the TA. TE stands for Terminal

Equipment which is a computer of any size and TA stands for

Terminal Adapter which is the modem part of the module.

The command line consists of a string of alphanumeric characters. It is

sent to the modem to instruct it to perform the commands specified by

the characters.

Functionality AT commands

CONTROL AND IDENTIFICATION

Subscriber Information AT+CNUM, AT+CIMI, AT*ESNU

Product & Release info AT+CGMI, AT+CGMM, AT+CGMR,

AT+CGSN, AT*ESIR

Generic information & Settings AT, AT*, AT+CLAC, AT+GCAP, ATI,

AT+CSCS, AT&F, AT&W, ATZ, AT+WS46

CALL CONTROL ATA, ATD, ATL, ATH, ATO, ATP, ATT,

AT+CHUP, AT+CMOD, AT+VTS, AT+CVHU,

AT+CR, AT+CRC, AT+CRLP

AUDIO CONTROL AT*EALR, AT*EAMS, AT*EARS, AT*ELAM,

AT*EMIR, AT*EMIC, AT*EXVC

NETWORK SERVICES

Alternate Line Service (ALS) AT*EALS, AT*ELIN, AT*ESLN

Customer Service Profile AT*ECSP

Call forwarding AT+CCFC, AT*EDIF, AT*EDIS

Calling/called number identification AT+CLIP, AT+CLIR, AT*EIPS

Preferred networks AT*EPNR, AT*EPNW

Advice of Charge AT+CACM, AT+CAMM, AT+CAOC,

AT+CPUC

Calling cards AT*ESCN

Call hold, waiting & multiparty AT+CCWA, AT+CHLD

Operator selection AT+COPS

Network registration AT+CREG

USSD AT+CUSD, AT+ CSSN

Security & Locks AT+CLCK, AT+ CPWD, AT+CPIN, AT*EPEE

SETTINGS AT*EMAR, AT*ERIL, AT*ERIN, AT*ERIP,

AT*ESIL, AT*ESMA, AT*ESMM, AT*ESOM,