Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 163 15.01.2010
TE link is reserved (e.g. in on line data mode) and flush
them to the TE when MT TE link becomes available;
otherwise forward them directly to the TE
<bfr> 0 MT buffer of unsolicited result codes defined within
this command is cleared when <mode> 1 or 2 is
entered
1 MT buffer of unsolicited result codes defined within this
command is flushed to the TE when <mode> 1 or 2
is entered
Reference Note
7.2.10 AT+CGREG Network Registration Status
AT+CGREG Network Registration Status
Test Command Response
+CGREG: (list of supported <n>s)
AT+CGREG=?
OK
Parameter
See Write Command
Read Command Response
AT+CGREG? +CGREG: <n>,<stat>[,<lac>,<ci>]
OK
+CME ERROR: <err>
Parameter
See Write Command
Write Command Response
AT+CGREG=[< OK
n>] ERROR
Parameters
<n> 0 disable network registration unsolicited result code
1 enable network registration unsolicited result code
+CGREG:<stat>
2 enable network registration and location information
unsolicited result code +CGREG: <stat>[,<lac>,<ci>]
<stat>
0 Not registered, MT is not currently searching an
operator to register to
The GPRS service is disabled, the UE is allowed to attach