Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 128 23.06.2010
Response :
+CADC: <status>,<value>
OK
Read Command
AT+CADC?
Parameters
See test Command
Response :
+CADC: (list of supported <status>s), (list of supported <value>s)
OK
Test Command
AT+CADC=?
Parameters
<status>
1 success
0 fail
<value> integer 0-2400
Reference Note
6.2.7 AT+CSNS Single Numbering Scheme
AT+CSNS Single Numbering Scheme
Response :
+CSNS: (list of supported <mode>s)
OK
Test Command
AT+CSNS =?
Parameter
Response :
+CSNS: <mode>
OK
Read Command
AT+CSNS?
Parameter
Response :
OK
ERROR
Write Command
AT+CSNS=<mo
de>
Parameter
<mode>
0 voice
2 fax
4 data
Reference Note