AT Commands User Manual Table of Contents 1 Introduction........................................................................................................................................ 7 1.1 Purpose of the document ...................................................................................................................................7 1.2 Terms and Abbreviations ...................................................................................................................................7 2 AT commands features ......................................................................................................................
7 2.1 Serial interface settings........................................................................................................................................7 2.2 Command line ......................................................................................................................................................7 2.3 Default values.......................................................................................................................................................7 2.4 Information responses and result codes...........................................................................................................8 3 General behaviors...............................................................................................................................
8 3.1 Start up and initialization ....................................................................................................................................8 4 General commands.............................................................................................................................
9 4.1 Manufacturer identification +CGMI................................................................................................................9 4.2 Request model identification +CGMM............................................................................................................9 4.3 Request revision identification +CGMR..........................................................................................................9 4.4 Request product serial number identification +CGSN..................................................................................9 4.5 Set TE character set +CSCS ..............................................................................................................................9 4.6 Request international mobile subscriber identification +CIMI..................................................................10 4.7 Card identification +CCID ..............................................................................................................................10 4.8 Request complete capabilities list +GCAP....................................................................................................10 4.9 Repeat last command A/..................................................................................................................................10 5 Mobile equipment control and status commands ............................................................................11 5.1 Phone activity status +CPAS ...........................................................................................................................11 5.2 Switch off MS +CPWROFF...........................................................................................................................11 5.3 Set phone functionality +CFUN.....................................................................................................................11 5.4 Battery charge +CBC ........................................................................................................................................12 5.5 Keypad control +CKPD ..................................................................................................................................12 5.6 Display control +CDIS.....................................................................................................................................13 5.7 Display control +CDIS.....................................................................................................................................13 5.8 Mobile termination event reporting +CMER................................................................................................14 5.9 Clock +CCLK....................................................................................................................................................15 5.10 Alarm +CALA ...................................................................................................................................................15 5.11 Delete alarm +CALD........................................................................................................................................16 5.12 Restricted SIM access +CRSM........................................................................................................................16 5.13 Alert sound mode +CALM..............................................................................................................................18 5.14 Ringer sound level +CRSL...............................................................................................................................18 5.15 Loudspeaker volume level +CLVL.................................................................................................................18 5.16 Mute control +CMUT ......................................................................................................................................18 5.17 Call meter maximum event +CCWE..............................................................................................................19 5.18 Set greeting text +CSGT ..................................................................................................................................19 5.19 Automatic Time Zone Update +CTZU.........................................................................................................19 5.20 Time Zone Reporting +CTZR........................................................................................................................19 5.21 Report mobile termination error +CMEE.....................................................................................................20 5.22 List all available AT commands +CLAC .......................................................................................................20 6.1 Select type of address +CSTA .........................................................................................................................21 6.2 Dial command D ...............................................................................................................................................21 6.2.2 V.25ter dialing digits..........................................................................................................................................21 6.2.3 V.25ter or GSM modifier characters..............................................................................................................21 6.2.4 Direct calling from phonebooks .....................................................................................................................21 6.2.5 Responses ...........................................................................................................................................................22 6.3 Select tone dialing T ..........................................................................................................................................22 6.4 Select pulse dialing P .........................................................................................................................................22 2