Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 44 12/24/2010
INDICATION
AT+CREG NETWORK REGISTRATION
AT+CRLP SELECT RADIO LINK PROTOCOL PARAMETERS
AT+CRSM RESTRICTED SIM ACCESS
AT+ CS Q SIGNAL QUALITY REPORT
AT+ FC LAS S FAX: SELECT, READ OR TEST SERVICE CLASS
AT+ FM I FAX: REPORT MANUFACTURED ID
AT+FMM FAX: REPORT MODEL ID
AT+ FM R FAX: REPORT REVISION ID
AT+ VT D TONE DURATION
AT+ VT S DTMF AND TONE GENERATION
AT+CMUX MULTIPLEXER CONTROL
AT+CNUM SUBSCRIBER NUMBER
AT+ CP OL PREFERRED OPERATOR LIST
AT+COPN READ OPERATOR NAMES
AT+CFUN SET PHONE FUNCTIONALITY
AT+CCLK CLOCK
AT+ CS IM GENERIC SIM ACCESS
AT+ CA LM ALERT SOUND MODE
AT+ CA LS ALERT SOUND SELECT
AT+CRSL RINGER SOUND LEVEL
AT+ CLV L LOUD SPEAKER VOLUME LEVEL
AT+ CM UT MUTE CONTROL
AT+ CP UC PRICE PER UNIT AND CURRENCY TABLE
AT+CCWE CALL METER MAXIMUM EVENT
AT+CBC
BATTERY CHARGE
AT+CUSD UNSTRUCTURED SUPPLEMENTARY SERVICE DATA
AT+CSSN SUPPLEMENTARY SERVICES NOTIFICATION
3.2 Detailed Descriptions of AT Command According to GSM07.07
3.2.1 AT+CACM Accumulated Call Meter (ACM) Reset or Query
AT+CACM Accumulated Call Meter(ACM) Reset or Query
Test Command
AT+CACM=?
Response
OK
Read Command
AT+CACM?
Response
TA returns the current value of ACM.