Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 170 2012.12.10
7 AT Commands for GPRS Support
7.1 Overview of AT Commands for GPRS Support
Command Description
AT+ CG ATT ATTACH OR DETACH FROM GPRS SERVICE
AT+CGDCONT DEFINE PDP CONTEXT
AT+CGQMIN QUALITY OF SERVICE PROFILE (MINIMUM ACCEPTABLE)
AT+CGQREQ QUALITY OF SERVICE PROFILE (REQUESTED)
AT+CGACT PDP CONTEXT ACTIVATE OR DEACTIVATE
AT+CGDATA ENTER DATA STATE
AT+CGPADDR SHOW PDP ADDRESS
AT+CGCLASS GPRS MOBILE STATION CLASS
AT+ CG ERE P CONTROL UNSOLICITED GPRS EVENT REPORTING
AT+ CG REG NETWORK REGISTRATION STATUS
AT+ CG SM S SELECT SERVICE FOR MO SMS MESSAGES
7.2 Detailed Descriptions of AT Commands for GPRS Support
7.2.1 AT+CGATT Attach or Detach from GPRS Service
AT+CGATT Attach or Detach from GPRS Service
Response
+CGATT: (list of supported <state>s)
OK
Test Command
AT+CGATT=?
Parameter
See Write Command
Response
+CGATT: <state>
OK
Read Command
AT+CGATT?
Parameter
See Write Command
Write Command
AT+CGATT=
<state>
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>