AT Commands User Manual 6.5 Call answer A......................................................................................................................................................22 6.6 Hook control H..................................................................................................................................................22 6.7 Monitor speaker loudness L.............................................................................................................................22 6.8 Monitor speaker mode M.................................................................................................................................22 6.9 Call mode +CMOD ..........................................................................................................................................23 6.10 Hang up call +CHUP........................................................................................................................................23 6.11 Extended error report +CEER .......................................................................................................................23 6.12 Tone duration +VTD .......................................................................................................................................23 6.13 DTMF and tone generation +VTS .................................................................................................................24 6.14 Redial last telephone number ATDL..............................................................................................................24 6.15 Automatic answer S0.........................................................................................................................................24 7.1 Subscriber number +CNUM ...........................................................................................................................25 7.2 Signal quality +CSQ ..........................................................................................................................................25 7.3 Operator selection +COPS..............................................................................................................................26 7.4 Network registration +CREG .........................................................................................................................27 7.5 Preferred operator list +CPOL........................................................................................................................27 7.6 Read operator names +COPN ........................................................................................................................28 8 Security Commands..........................................................................................................................
29 8.1 Enter PIN +CPIN.............................................................................................................................................29 8.2 Facility lock +CLCK .........................................................................................................................................29 8.3 Change password +CPWD..............................................................................................................................30 9 Phonebook Commands.....................................................................................................................31 9.1 Select phonebook memory storage +CPBS...................................................................................................31 9.2 Read phonebook entries +CPBR....................................................................................................................31 9.3 Find phonebook entries +CPBF.....................................................................................................................32 9.4 Write phonebook entry +CPBW.....................................................................................................................32 10 Short Messages Commands .............................................................................................................
33 10.1 Parameter definition..........................................................................................................................................33 10.2 Select message service +CSMS........................................................................................................................33 10.3 Preferred message storage +CPMS.................................................................................................................34 10.4 Preferred message format +CMGF................................................................................................................34 10.5 Save settings +CSAS .........................................................................................................................................34 10.6 Restore Settings +CRES...................................................................................................................................34 10.7 Show text mode parameters +CSDH.............................................................................................................35 10.8 New message indication +CNMI....................................................................................................................35 10.9 Read message +CMGR.....................................................................................................................................37 10.10 New Message Acknowledgement to ME/TA +CNMA..............................................................................37 10.11 List message +CMGL.......................................................................................................................................38 10.12 Send message +CMGS .....................................................................................................................................38 10.13 Write message to memory +CMGW..............................................................................................................39 10.14 Send message from storage +CMSS...............................................................................................................39 10.15 Set text mode parameters +CSMP..................................................................................................................39 10.16 Delete SMS +CMGD........................................................................................................................................40 10.17 Service center address +CSCA ........................................................................................................................40 10.18 Select cell broadcast message types +CSCB..................................................................................................40 11 Supplementary Services Command...................................................................................................41 11.1 Call waiting +CCWA.........................................................................................................................................42 11.2 Calling line identification restriction +CLIR .................................................................................................43 11.3 Calling line identification presentation +CLIP..............................................................................................43 11.4 Connected line identification presentation +COLP.....................................................................................44 11.5 Connected line identification restriction +COLR ........................................................................................44 11.6 Advise of charge +CAOC................................................................................................................................45 11.7 Accumulated call meter +CACM....................................................................................................................45 3