Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 5 12/24/2010
2.2.24 ATT Select Tone Dialing ...........................................................................................31
2.2.25 ATV TA Response Format .......................................................................................31
2.2.26 ATX Set CONNECT Result Code Format and Monitor Call Progress .....................32
2.2.27 ATZ Reset Default Configuration .............................................................................32
2.2.28 AT&C Set DCD Function Mode ...............................................................................33
2.2.29 AT&D Set DTR Function Mode................................................................................34
2.2.30 AT&F Factory Defined Configuration ......................................................................34
2.2.31 AT&V Display Current Configuration ......................................................................36
2.2.32 AT&W Store Active Profile ......................................................................................36
2.2.33 AT+GCAP Request Complete TA Capabilities List ..................................................37
2.2.34 AT+GMI Request Manufacturer Identification .........................................................37
2.2.35 AT+GMM Request TA Model Identification ............................................................38
2.2.36 AT+GMR Request TA Revision Identification of Software Release.........................38
2.2.37 AT+GOI Request Global Object Identification.........................................................38
2.2.38 AT+GSN Request TA Serial Number Identification (IMEI) .....................................39
2.2.39 AT+ICF Set TE-TA Control Character Framing........................................................39
2.2.40 AT+IFC Set TE-TA Local Data Flow Control ..........................................................40
2.2.41 AT+IPR Set TE-TA Fixed Local Rate .......................................................................41
2.2.42 AT+HVOIC Disconnect Voice Call Only..................................................................42
3 AT Commands According to GSM07.07.....................................................................................43
3.1 Overview of AT Command According to GSM07.07 ...........................................................43
3.2 Detailed Descriptions of AT Command According to GSM07.07 ........................................44
3.2.1 AT+CACM Accumulated Call Meter (ACM) Reset or Query....................................44
3.2.2 AT+CAMM Accumulated Call Meter Maximum (ACM max) Set or Query .............45
3.2.3 AT+CAOC Advice of Charge .....................................................................................46
3.2.4 AT+CBST Select Bearer Service Type........................................................................47
3.2.5 AT+CCFC Call Forwarding Number and Conditions Control....................................48
3.2.6 AT+CCWA Call Waiting Control ................................................................................49
3.2.7AT+CEER Extended Error Report ...............................................................................51
3.2.8 AT+CGMI Request Manufacturer Identification ........................................................53
3.2.9 AT+CGMM Request Model Identification..................................................................53
3.2.10 AT+CGMR Request TA Revision Identification of Software Release......................54
3.2.11 AT+CGSN Request Product Serial Number Identification (Identical with +GSN)...54
3.2.12 AT+CSCS Select TE Character Set ...........................................................................55
3.2.13 AT+CSTA Select Type of Address ............................................................................56
3.2.14 AT+CHLD Call Hold and Multiparty........................................................................56
3.2.15 AT+CIMI Request International Mobile Subscriber Identity....................................57
3.2.16 AT+CLCC List Current Calls of ME.........................................................................58
3.2.17 AT+CLCK Facility Lock...........................................................................................60
3.2.18 AT+CLIP Calling Line Identification Presentation ...................................................61
3.2.19 AT+CLIR Calling Line Identification Restriction.....................................................62
3.2.20 AT+CMEE Report Mobile Equipment Error.............................................................63
3.2.21 AT+COLP Connected Line Identification Presentation ............................................64
3.2.22 AT+COPS Operator Selection...................................................................................66