Manual
     Smart Machine Smart Decision 
SIM800 Series_AT Command Manual_V1.09  144  2015-08-03 
AT+CPSPWD  Change PS super password 
AT+EXUNSOL  Enable or disable proprietary unsolicited indications 
AT+CGMSCLASS  Change GPRS multislot class 
AT+CDEVICE  View current flash device type 
AT+CCALR  Call ready query 
AT+GSV  Display product identification information 
AT+SGPIO  Control the GPIO 
AT+SPWM  Generate the pulse-width-modulation 
AT+ECHO  Echo cancellation control 
AT+CAAS  Control auto audio switch 
AT+SVR  Configure voice coding type for voice calls 
AT+GSMBUSY  Reject incoming call 
AT+CEMNL  Set the list of emergency number 
AT*CELLLOCK  Set the list of ARFCN which needs to be locked 
AT+SLEDS  Set the timer period of net light 
AT+CBUZZERRING  Use the buzzer sound as the incoming call ring 
AT+CEXTERNTONE  Close or open the microphone 
AT+CNETLIGHT  Close the net light or open it to shining 
AT+CWHITELIST  Set the white list 
AT+CSDT  Switch on or off detecting SIM card 
AT+CSMINS  SIM inserted status reporting 
AT+CSGS  Netlight indication of GPRS status 
AT+CMICBIAS  Close or open the MICBIAS 
AT+DTAM  Set TTS and record play mode in call 
AT+SJDR  Set jamming detection fuction 
AT+CPCMCFG  Set PCM parameter 
AT+CPCMSYNC  Set PCM sync parameter 
AT+CANT  Antenna detecting 
AT+CAGCSET  Close or open AGC function 
AT+SD2PCM  SD and PCM switch function 
AT+SKPD  Keypad detecting function 
AT+SIMTONEX  Custom tones 
AT+CROAMING  Roaming state 
AT+CNETSCAN  Performing a net survey to show all the cells’ information 
AT+CMNRP  Dual serial port feature 
AT+CEGPRS  Switch on or off EDGE 
AT+CGPIO  Control the GPIO by PIN index 
AT+CMEDPLAY  Play audio file 










