AT Command Set
MC35_ATC_01_V04.00 Page 5 of 238 02.04.2002
4.14 AT+CGMR Request revision identification of software status .............................................. 73
4.15 AT+CGSN Request product serial number identification (IMEI) identical to GSN ................74
4.16 AT+CHLD Call hold and multiparty ........................................................................................74
4.17 AT+CHUP Hang up call......................................................................................................... 75
4.18 AT+CIMI Request international mobile subscriber identity ................................................... 75
4.19 AT+CIND Indicator control .....................................................................................................76
4.20 AT+CLCC List current calls of ME......................................................................................... 78
4.21 AT+CLCK Facility lock........................................................................................................... 79
4.21.1 Examples: Enabling / disabling PIN 1 authentication............................................................. 81
4.21.2 Examples: Phone lock............................................................................................................ 81
4.21.3 Examples: Call barring ...........................................................................................................83
4.22 AT+CLIP Calling line identification presentation ...................................................................85
4.23 AT+CLIR Calling line identification restriction (by *# sequence) ...........................................86
4.24 AT+CLVL Loudspeaker volume level.................................................................................... 87
4.25 AT+CMER Mobile equipment event reporting....................................................................... 88
4.26 AT+CMEE Report mobile equipment error ........................................................................... 89
4.27 AT+CMUT Mute control......................................................................................................... 90
4.28 AT+CMUX Enter multiplex mode ..........................................................................................91
4.28.1 Restricted use of AT commands in Multiplex mode ...............................................................92
4.29 AT+COPN Read operator names ......................................................................................... 94
4.30 AT+COPS Operator selection............................................................................................... 95
4.31 AT+CPAS Mobile equipment activity status.......................................................................... 97
4.32 AT+CPBR Read current phonebook entries .........................................................................98
4.33 AT+CPBS Select phonebook memory storage..................................................................... 99
4.34 AT+CPBW Write phonebook entry...................................................................................... 100
4.35 AT+CPIN Enter PIN.............................................................................................................101
4.35.1 What to do if PIN or password authentication fails?............................................................. 104
4.36 AT+CPIN2 Enter PIN2......................................................................................................... 106
4.37 AT+CPUC Price per unit and currency table....................................................................... 108
4.38 AT+CPWD Change password............................................................................................. 109
4.39 AT+CR Service reporting control......................................................................................... 112
4.40 AT+CRC Set Cellular Result Codes for incoming call indication ........................................113
4.41 AT+CREG Network registration ..........................................................................................114
4.42 AT+CRLP Select radio link protocol param. for orig. non-transparent data ca ll................. 116
4.43 AT+CRSM Restricted SIM access ......................................................................................117
4.44 AT+CSCS Set TE character set.......................................................................................... 118
4.45 AT+CSNS Single Numbering Scheme................................................................................ 119
4.46 AT+CSQ Signal quality........................................................................................................ 120
4.47 AT+CSSN Supplementary service notifications ..................................................................121
4.48 AT+CUSD Unstructured supplementary service data......................................................... 122
4.49 AT+VTD=<n> Tone duration............................................................................................... 123
4.50 AT+VTS DTMF and tone generation (<Tone> in {0-9, *, #, A, B, C, D}) .............................124
4.51 AT+WS46 Select wireless network ......................................................................................125
5 AT commands originating from GSM 07.05 for SMS............................ 126
5.1 AT+CMGC Send an SMS command................................................................................... 126
5.2 AT+CMGD Delete SMS message....................................................................................... 127
5.3 AT+CMGF Select SMS message format ............................................................................ 127
5.4 AT+CMGL List SMS messages from preferred store ......................................................... 128
5.5 AT+CMGR Read SMS message......................................................................................... 131
5.6 AT+CMGS Send SMS message......................................................................................... 134
5.7 AT+CMGW Write SMS message to memory ......................................................................136
5.8 AT+CMSS Send SMS message from storage ....................................................................138
5.9 AT+CNMA New SMS message acknowledge to ME/TE, only phase 2+............................ 139
5.10 AT+CNMI New SMS message indications.......................................................................... 140
5.11 AT+CPMS Preferred SMS message storage...................................................................... 142
5.12 AT+CSCA SMS service centre address.............................................................................. 144