AT Command AT AT!DAFTMACT AT!DAFTMDEACT AT!DALGAVGAGC AT!DALSRXBW AT!DALSTXBW AT!DALSWAVEFORM AT!DASBAND AT!DASCHAN AT!DASLNAGAIN AT!DASTXOFF AT!DASTXON AT!DAWGRXAGC AT!DAWSTXCW AT!DAWSTXPWR AT!ENTERCND AT!GCFEN AT!GCFUIMTYPE AT!GETBAND AT!GETRAT AT!MAPUART AT!MAXPWR AT!SELACQ AT!SETCND AT!UDINFO AT!UDPID AT!UDUSBCOMP AT#ADC AT#ALARMPIN AT#AUTOATT AT#CBC AT#CCID AT#CEERNET AT#CGMI AT#CSURVTA AT#E2SMSRI AT#ENHRST AT#FTPAPP AT#FTPCFG AT#FTPCLOSE AT#FTPCWD AT#FTPDELETE AT#FTPFSIZE AT#FTPGET AT#FTPLIST AT#FTPMSG AT#FTPOPEN AT#FTPPUT AT#FTPPWD AT#FTPTO AT#GPIO AT#HTTPCFG AT#HTTPQRY AT#HTTPSND AT#MONI AT#MSCLASS AT#PCT AT#PLMNMODE AT#QTEMP AT#SRECV AT#SA AT#SCFG AT#SCFGEXT AT#SD AT#SERVINFO AT#SGACT AT#SGACTAUTH AT#SSACTCFG AT#SGPO AT#SHDN AT#SI AT#SL AT#SLASTCLOSURE AT#SLED AT#SLED AT#SLUDP AT#SMSMODE AT#SO AT#SPN AT#SS AT#SSEND AT#SSENDEXT AT#SSENDUDP AT#SSENDUDPEXT AT#ST AT#TEMPMON AT#TXMONMODE AT#VAUX AT#WAKE AT$GPSACP AT$GPSAP AT$GPSAT AT$GPSAT AT$GPSAV AT$GPSCON AT$GPSD AT$GPSNMUN AT$GPSP AT$GPSPRG AT$GPSPS AT$GPSR AT$GPSRST AT$GPSS AT$GPSSAV AT$GPSSERSPEED AT$GPSSW AT$GPSWK AT$HTTPRCV AT+AUTOCSQ AT+CACFG AT+CACLOSE AT+CACM AT+ADC AT+CALA AT+CALA AT+CALD AT+CALD AT+CALM AT+CAOC AT+CAOPEN AT+CAPD AT+CARECV AT+CASEND AT+CASIMS AT+CAVIMS AT+CBAND AT+CMNB AT+CBC AT+CBCAP AT+CBCHG AT+CBKLT AT+CBSD AT+CBST AT+CMTE AT+CCALR AT+CCHC AT+CCHO AT+CCID AT+CCLK AT+CCUG AT+CCVM AT+CCWA AT+CDEVICE AT+CDIS AT+CDNSCFG AT+CDNSGIP AT+CDRIND AT+CEAP AT+CECALL AT+CEER AT+CEMNL AT+CEN AT+CENG AT+CEREG AT+CERP AT+CESQ AT+CFCS AT+CFSDFILE AT+CFSREN AT+SMSTATE AT+CFSREN AT+CFSRFILE AT+CFSWFILE AT+CFUN AT+CGACT AT+CGANS AT+CGATT AT+CGAUTH AT+CGAUTO AT+CGCLASS AT+CGCMOD AT+CGCONTRDP AT+CGDATA AT+CGDCONT AT+CGDEL AT+CGDSCONT AT+CGEQMIN AT+CGEQREQ AT+CGEREP AT+CGID AT+CGLA AT+CGMI AT+CGMM AT+CGMR AT+CGMSCLASS AT+CGNSPWR AT+CGNSSEQ AT+CGPADDR AT+CGPIAF AT+CGPS AT+CGPSCOLD AT+CGPSHOT AT+CGPSINF AT+CGPSIPR AT+CGPSOUT AT+CGPSPWR AT+CGPSRST AT+CGPSSSL AT+CGPSSTATUS AT+CGPSURL AT+CGPSXE AT+CGQMIN AT+CGQREQ AT+CGREG AT+CGSCONTRDP AT+CGSMS AT+CGSMS AT+CGSN AT+CHF AT+CHFA AT+CHLD AT+CHTTPACT AT+CHUP AT+CIFSR AT+CIICR AT+CIMI AT+CIND AT+CIPACK AT+CIPCA AT+CIPCLOSE AT+CIPCSGP AT+CIPHEAD AT+CIPMODE AT+CIPMUX AT+CIPMUX AT+CIPPING AT+CIPQSEND AT+CIPRXGET AT+CIPSCONT AT+CIPSEND AT+CIPSERVER AT+CIPSHUT AT+CIPSPRT AT+CIPSRIP AT+CIPSTART AT+CIPSTATUS AT+CIPUDPMODE AT+CIREG AT+CISRVCC AT+CISRVCC AT+CKPD AT+CLAC AT+CLAE AT+CLAN AT+CLCK AT+CLDTMF AT+CLIP AT+CLPORT AT+CMAR AT+CMEE AT+CMGD AT+CMGL AT+CMGS AT+CMGSEX AT+CMIC AT+CMNB AT+CMOD AT+CMOLR AT+CMOLRE AT+CMTE AT+CMUT AT+CMUX AT+CNAOP AT+CNAP AT+CNMP AT+CNMP AT+CNMPSD AT+CNSMOD AT+CNUM AT+COLP AT+COPN AT+COPS AT+CPAS AT+CPBF AT+CPBR AT+CPBS AT+CPBW AT+CPIN AT+CPINR AT+CPLS AT+CPMS AT+CPNET AT+CPOL AT+CPOS AT+CPOSR AT+CPOWD AT+CPOWD AT+CPSB AT+CPSI AT+CPWC AT+CPWD AT+CR AT+CRC AT+CREG AT+CRLA AT+CRLP AT+CRMC AT+CRMP AT+CRSL AT+CRSM AT+CSCA AT+CSCC AT+CSCON AT+CSCS AT+CSDF AT+CSGT AT+CSIL AT+CSIM AT+CSMS AT+CSNS AT+CSO AT+CSPN AT+CSQ AT+CSS AT+CSTA AT+CSTF AT+CSTT AT+CSUS AT+CSVM AT+CTFR AT+CTSA AT+CTZR AT+CTZU AT+CUAD AT+CVHU AT+CVIB AT+CVMOD AT+ECHO AT+FCLASS AT+FTPCID AT+FTPGET AT+FTPGETNAME AT+FTPGETPATH AT+FTPMODE AT+FTPPORT AT+FTPPUT AT+FTPPUTNAME AT+FTPPUTOPT AT+FTPPUTPATH AT+FTPPW AT+FTPREST AT+FTPSERV AT#FTPTYPE AT+FTPTYPE AT+FTPUN AT+GSMBUSY AT+HTTPACTION AT+HTTPINIT AT+HTTPPARA AT+HTTPREAD AT+HTTPTERM AT+IPR AT+LVL AT+NETMODE AT+PACSP AT+QIACT AT+QICLOSE AT+QIDEACT AT+QILPORT AT+QIOPEN AT+QIREGAPP AT+QISEND AT+SGPIO AT+SHAHEAD AT+SHCONF AT+SHCONN AT+SHREAD AT+SHREQ AT+SIDET AT+SIMTONE AT+SMCONF AT+SMCONN AT+SMDISC AT+SMPUB AT+SMSTATE AT+SMSUB AT+SMUNSUB AT+SPIC AT+SPIC AT+SPWM AT+STTONE AT+SVR AT+WS46 ATA ATD ATDL ATH AT^CARDLOCK AT^CHIPTEMP AT^CPCM AT^DSFLOWCLR AT^DSFLOWQRY AT^ECHO AT^FREQLOCK AT^FREQPREF AT^HSDPA AT^IMEISV AT^IOCTRL AT^IPFLOWQ AT^IPINIT AT^IPOPEN AT^LISTEN AT^NDISSTATQRY AT^NWTIME AT^PORTSEL AT^SPN AT^STGR AT^STSF AT^SYSCFG AT^SYSINFO AT^U2DIAG AT^WAKEUPCFG AT^WPDGP AT^WPDOM AT^WPDST Description AT+CCHO At command is used to open a session with UICC so that commmands can be sent over the UICC logical channels. Usage Command Possible response(s) +CCHO=<dfname> <sessionid>   +CME ERROR: <err> +CCHO=?   Examples Keywords AT+CCHO syntax, examples, parameters, error, input, response.