Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 124 23.06.2010
AT+CGID GET SIM CARD GROUP IDENTIFIER
AT+MORING SHOW STATE OF MOBILE ORIGINATED CALL
AT+CMGHEX ENABLE TO SEND NON-ASCII CHARACTER SMS
AT+AUTEST AUDIO CHANNEL LOOPBACK TEST
AT+CCODE CONFIGURE SMS CODE MODE
AT+CIURC ENABLE OR DISABLE INITIAL URC PRESENTATION
AT+CPSPWD CHANGE PS SUPER PASSWORD
AT+EXUNSOL ENABLE/DISABLE PROPRIETARY UNSOLICITED INDICATIONS
AT+CGMSCLASS CHANGE GPRS MULTISLOT CLASS
AT+CDEVICE VIEW CURRENT FLASH DEVICE TYPE
AT+CCALR CALL READY QUERY
AT+ GS V DISPLAY PRODUCT IDENTIFICATION INFORMATION
AT+SGPIO CONTROL THE GPIO
AT+SPWM GENERATE THE PULSE-WIDTH-MODULATION
AT+ECHO ECHO CANCELLATION CONTROL
6.2 Detailed Descriptions of Commands
6.2.1 AT+SIDET Change the Side Tone Gain Level
AT+SIDET Change the Side Tone Gain Level
Response:
+SIDET: <gainlevel>,<gainlevel>
OK
Read Command
AT+SIDET?
Parameters
See Write Command
Response
+SIDET: (list of supported <channel>s),(list of supported < gainlevel>s)
OK
Test Command
AT+SIDET=?
Parameters
See Write Command
Write Command
AT+SIDET=<
channel>,<
Response
OK
ERROR