Research SIM 900A - GPRS AT Commands

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GSM GPRS SIM900A MODEM
REV1.0
 AT+CRC SET CELLULAR RESULT CODES FOR INCOMING CALL INDICATION:
AT+CRC=? ↲
+CRC: (0-1)
OK
AT+CRC? ↲
+CRC: 0
OK
AT+CRC=1 ↲
OK
+CRING: VOICE
 READ OPERATOR NAMES.
AT+COPN=? ↲
OK
AT+COPN ↲
+COPN: “472001″,”DHIMOBILE”
+COPN: “60500
+COPN: “502012″,”maxis mobile”
+COPN:
+COPN: “502013″,”TMTOUCH”
+COPN
+COPN: “502016″,”DiGi”
+COPN: “502017″,”TIMECel”"
+COPN: “502019″,”CELCOM GSM”
GPRS Commands:
Command Description
AT+CGATT ↲ ATTACH/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+CGEREP ↲ CONTROL UNSOLICITED GPRS EVENT REPORTING
AT+CGREG ↲ NETWORK REGISTRATION STATUS
AT+CGSMS ↲ SELECT SERVICE FOR MO SMS MESSAGES
AT+CGCOUNT ↲ GPRS PACKET COUNTERS