Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 7 15.01.2010
4.2.8 AT+CNMI New SMS Message Indications ................................................................. 110
4.2.9 AT+CPMS Preferred SMS Message Storage ............................................................... 113
4.2.10 AT+CRES Restore SMS Settings............................................................................... 114
4.2.11 AT+CSAS Save SMS Settings ...................................................................................115
4.2.12 AT+CSCA SMS Service Center Address ................................................................... 115
4.2.13 AT+CSCB Select Cell Broadcast SMS Messages...................................................... 116
4.2.14 AT+CSDH Show SMS Text Mode Parameters .......................................................... 117
4.2.15 AT+CSMP Set SMS Text Mode Parameters ..............................................................118
4.2.16 AT+CSMS Select Message Service............................................................................ 119
5 AT Commands for SIM Application Toolkit ..............................................................................121
5.1 STK AT command...............................................................................................................121
6 AT Commands Special for SIMCOM ........................................................................................123
6.1 Overview.............................................................................................................................123
6.2 Detailed Descriptions of Commands...................................................................................124
6.2.1 AT+SIDET Change The Side Tone Gain Level............................................................124
6.2.2 AT+CPOWD Power Off...............................................................................................124
6.2.3 AT+SPIC Times Remain To Input SIM PIN/PUK .......................................................125
6.2.4 AT+CMIC Change The Microphone Gain Level ........................................................125
6.2.5 AT+CALA Set Alarm Time..........................................................................................126
6.2.6 AT+CADC Read ADC .................................................................................................127
6.2.7 AT+CSNS Single Numbering Scheme.........................................................................128
6.2.8 AT+CDSCB Reset Cell Broadcast ...............................................................................128
6.2.9 AT+CMOD Configure Alternating Mode Calls ...........................................................128
6.2.10 AT+CFGRI Indicate RI When Using URC ................................................................129
6.2.11 AT+CLTS Get Local Timestamp ................................................................................129
6.2.12 AT+CEXTHS External Headset Jack Control............................................................130
6.2.13 AT+CEXTBUT Headset Button Status Reporting .....................................................131
6.2.14 AT+CSMINS SIM Inserted Status Reporting ............................................................132
6.2.15 AT+CLDTMF Local DTMF Tone Generation ...........................................................133
6.2.16 AT+CDRIND CS Voice/Data/Fax Call Termination Indication.................................133
6.2.17 AT+CSPN Get Service Provider Name From SIM ....................................................134
6.2.18 AT+CCVM Get And Set The Voice Mail Number On The SIM................................135
6.2.19 AT+CBAND Get And Set Mobile Operation Band....................................................135
6.2.20 AT+CHF Configure Hands Free Operation................................................................136
6.2.21 AT+CHFA Swap The Audio Channels .......................................................................137
6.2.22 AT+CSCLK Configure Slow Clock ...........................................................................138
6.2.23 AT+CENG Switch On Or Off Engineering Mode......................................................138
6.2.24 AT+SCLASS0 Store Class 0 SMS To SIM When Received Class 0 SMS ................140
6.2.25 AT+CCID Show ICCID .............................................................................................141
6.2.26 AT+CMTE Set Critical Temperature Operating Mode Or Query Temperature ........141
6.2.27 AT+CSDT Switch On Or Off Detecting SIM Card ...................................................141
6.2.28 AT+CMGDA Delete All SMS...................................................................................142
6.2.29 AT+SIMTONE Generate Specifically Tone..............................................................143
AT+SIMTONE Generate Specifically Tone.........................................................................143