Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 56 23.06.2010
Test Command
AT+CGMR=?
Response
OK
Execution
Command
AT+CGMR
Response
TA returns product software version identification text.
Revision: <revision>
OK
Parameter
<revision> product software version identification text.
Reference
GSM 07.07 [13]
Note
3.2.11 AT+CGSN Request Product Serial Number Identification (Identical with +GSN)
AT+CGSN Request Product Serial Number Identification (Identical with +GSN)
Test Command
AT+CGSN=?
Response
OK
Execution
Command
AT+CGSN
Response
see +GSN
<sn>
OK
Parameter
<sn> nternational mobile equipment identity (IMEI)
Reference
GSM 07.07 [13]
Note
3.2.12 AT+CSCS Select TE Character Set
AT+CSCS Select TE Character Set
Test Command
AT+CSCS=?
Response
+CSCS: (list of supported <chset>s)
OK
Parameter
<chset> "GSM" GSM 7 bit default alphabet (3GPP TS 23.038);.
"UCS2" 16-bit universal multiple-octet coded character
set (ISO/IEC10646); UCS2 character strings are
converted to hexadecimal numbers from 0000 to
FFFF; e.g. "004100620063" equals three 16-bit
characters with decimal values 65, 98 and 99
"IRA" International reference alphabet (ITU-T T.50)
"HEX" character strings consist only of hexadecimal