Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 6 15.01.2010
3.2.24 AT+CPBF Find Phonebook Entries..............................................................................69
3.2.25 AT+CPBR Read Current Phonebook Entries ...............................................................70
3.2.26 AT+CPBS Select Phonebook Memory Storage............................................................71
3.2.27 AT+CPBW Write Phonebook Entry.............................................................................72
3.2.28 AT+CPIN Enter PIN.....................................................................................................74
3.2.29 AT+CPWD Change Password......................................................................................75
3.2.30 AT+CR Service Reporting Control ..............................................................................75
3.2.31 AT+CRC Set Cellular Result Codes For Incoming Call Indication .............................76
3.2.32 AT+CREG Network Registration.................................................................................77
3.2.33 AT+CRLP Select Radio Link Protocol Parameter........................................................79
3.2.34 AT+CRSM Restricted SIM Access ..............................................................................80
3.2.35 AT+CSQ Signal Quality Report ...................................................................................81
3.2.36 AT+FCLASS FAX: Select, Read Or Test Service Class..............................................81
3.2.38 AT+FMI FAX: Report Manufactured ID......................................................................82
3.2.39 AT+FMM FAX: Rreport Model ID..............................................................................82
3.2.40 AT+FMR FAX: Report Revision ID ............................................................................83
3.2.41 AT+VTD Tone Duration...............................................................................................83
3.2.42 AT+VTS DTMF And Tone Generation ........................................................................84
3.2.43 AT+CMUX Multiplexer Control..................................................................................85
3.2.44 AT+CNUM Subscriber Number...................................................................................87
3.2.45 AT+CPOL Preferred Operator List...............................................................................88
3.2.46 AT+COPN Read Operator Names................................................................................88
3.2.47 AT+CFUN Set Phone Functionality. ............................................................................89
3.2.48 AT+CCLK Clock..........................................................................................................90
3.2.49 AT+CSIM Generic SIM Access ...................................................................................90
3.2.50 AT+CALM Alert Sound Mode.....................................................................................91
3.2.51 AT+CRSL Ringer Sound Level....................................................................................92
3.2.52 AT+CLVL Loud Speaker Volume Level ......................................................................92
3.2.53 AT+CMUT Mute Control.............................................................................................93
3.2.54 AT+CPUC Price Per Unit And Currency Table............................................................94
3.2.55 AT+CCWE Call Meter Maximum Event .....................................................................94
3.2.56 AT+CBC Battery Charge..............................................................................................95
3.2.57 AT+CUSD Unstructured Supplementary Service Data................................................96
3.2.58 AT+CSSN Supplementary Services Notification .........................................................97
4 AT Commands According to GSM07.05......................................................................................99
4.1 Overview of AT Commands According to GSM07.05..........................................................99
4.2 Detailed Descriptions of AT Commands According to GSM07.05.......................................99
4.2.1 AT+CMGD Delete SMS Message..................................................................................99
4.2.2 AT+CMGF Select SMS Message Format ....................................................................100
4.2.3 AT+CMGL List SMS Messages From Preferred Store ................................................101
4.2.4 AT+CMGR Read SMS Message..................................................................................104
4.2.5 AT+CMGS Send SMS Message...................................................................................107
4.2.6 AT+CMGW Write SMS Message To Memory ............................................................108
4.2.7 AT+CMSS Send SMS Message From Storage.............................................................109