Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 7 12/24/2010
4.2.6 AT+CMGW Write SMS Message to Memory ..........................................................106
4.2.7 AT+CMSS Send SMS Message from Storage ..........................................................108
4.2.8 AT+CNMI New SMS Message Indications ..............................................................108
4.2.9 AT+CPMS Preferred SMS Message Storage ............................................................ 111
4.2.10 AT+CRES Restore SMS Settings............................................................................ 111
4.2.11 AT+CSAS Save SMS Settings ................................................................................ 112
4.2.12 AT+CSCA SMS Service Center Address ................................................................ 113
4.2.13 AT+CSCB Select Cell Broadcast SMS Messages................................................... 114
4.2.14 AT+CSDH Show SMS Text Mode Parameters ....................................................... 115
4.2.15 AT+CSMP Set SMS Text Mode Parameters ...........................................................115
4.2.16 AT+CSMS Select Message Service......................................................................... 116
5 AT Commands for SIM Application Toolkit.............................................................................118
5.1 STK AT Command.............................................................................................................. 118
6 AT Commands Special for SIMCOM........................................................................................120
6.1 Overview.............................................................................................................................120
6.2 Detailed Descriptions of Commands...................................................................................121
6.2.1 AT+SIDET Change the Side Tone Gain Level.......................................................121
6.2.2 AT+CPOWD Power Off ...........................................................................................122
6.2.3 AT+SPIC Times Remained to Input SIM PIN/PUK.................................................122
6.2.4 AT+CMIC Change the Microphone Gain Level.......................................................123
6.2.5 AT+CALA Set Alarm Time......................................................................................124
6.2.6 AT+CALD Delete Alarm..........................................................................................125
6.2.7 AT+CADC Read ADC .............................................................................................125
6.2.8 AT+CSNS Single Numbering Scheme .....................................................................125
6.2.9 AT+CDSCB Reset Cell Broadcast............................................................................126
6.2.10 AT+CMOD Configure Alternating Mode Calls .....................................................126
6.2.11 AT+CFGRI Indicate RI When Using URC ............................................................127
6.2.12 AT+CLTS Get Local Timestamp............................................................................127
6.2.13 AT+CEXTHS External Headset Jack Control ........................................................129
6.2.14 AT+CEXTBUT Headset Button Status Reporting .................................................130
6.2.15 AT+CSMINS SIM Inserted Status Reporting.........................................................131
6.2.16 AT+CLDTMF Local DTMF Tone Generation .......................................................131
6.2.17 AT+CDRIND CS Voice/Data Call Termination Indication ...................................132
6.2.18 AT+CSPN Get Service Provider Name from SIM ..................................................133
6.2.19 AT+CCVM Get and Set the Voice Mail Number on the SIM .................................133
6.2.20 AT+CBAND Get and Set Mobile Operation Band .................................................134
6.2.21 AT+CHF Configure Hands Free Operation.............................................................135
6.2.22 AT+CHFA Swap the Audio Channels .....................................................................135
6.2.23 AT+CSCLK Configure Slow Clock ........................................................................136
6.2.24 AT+CENG Switch On or Off Engineering Mode ...................................................137
6.2.25 AT+SCLASS0 Store Class 0 SMS to SIM When Received Class 0 SMS ..............139
6.2.26 AT+CCID Show ICCID ..........................................................................................139
6.2.27 AT+CMTE Set Critical Temperature Operating Mode or Query Temperature......139
6.2.28 AT+CBTE Battery Temperature Query...................................................................140