Siemens MC35 - Manual (Page 107)

AT Command Set
MC35_ATC_01_V03.02 Page 107 of 228 13.03.2002
4.37 AT+CREG Network registration
Test command
AT+CREG=?
Response
+CREG: (list of supported s) OK
Parameter
See write command
Read command
AT+CREG?
ME returns the URC presentation mode and an integer that shows
the registration status of the ME. The location information elements and
are returned only when =2 and ME is registered to the network.
Response
+CREG: ,[,,]
OK
or if an error occurs which is related to ME functionality:
+CME ERROR: > (for error text see Chapter 9.1.1. or set AT+CMEE=2)
Write command
AT+CREG=
[]
Use the write command to select the type of URC. Two types of URCs are
available:
+CREG: if =1. To be issued when the ME's network registration
status changes
or
+CREG: [,,] if =2. To be issued when ME's network regis-
tration or network cell changes.
Response
OK
or if an error occurs which is related to ME functionality:
+CME ERROR:
>
256 If = 0: Attempt to set once again =0 causes error
code 256.
If > 0: Attempt to activate a URC mode that is already
active is acknowledged with OK.
Parameter
0 disable URCs
1 enable URC +CREG: to report status of network reg-
istration
2 enable URC +CREG:[,,] to report status of
network registration including location information. Please
note that optional parameters will not be displayed during
call.
0 not registered, ME is currently not searching for new op-
erator
1 registered, home network
2 not registered, but ME is currently searching for a new op-
erator
3 registration denied
4 unknown
5 registered, roaming
string type; two byte location area code in hexadecimal format
(e.g. "00C3" equals 193 in decimal)
string type; two byte cell ID in hexadecimal format