Specifications

AT Command Set for L55 Platform 2003-11-21
Copyright  Siemens AG 2003 All Rights Reserved Page 31 of 131
2.3.3.15 AT+CREG
AT+CREG Network registration
Test command
AT+CREG=?
Response
+CREG: (list of supported <n>s)
OK/ERROR/+CME ERROR
Parameter
<n>
0 Suppresses the unexpected network status messages
1 Displays the unexpected network status messages
2 Enables unexpected network registration and location
information messages
OK/ERROR/+CME ERROR
Read command
AT+CREG?
Response
+CREG: <n>,<stat>[,<lac>,<ci>]
OK/ERROR/+CME ERROR
Parameter
<n>
See Test command
<stat> 0 Not checked in, not seeking
1 Checked in
2 Not checked in, but seeking a network
3 Check-in denied by network
4 Unknown
5 Registered, roaming
<lac> Hexadecimal 2-byte string type of location area code
<ci> Hexadecimal 2-byte string type of cell ID
Write command
AT+CREG=<n>
Response
OK/ERROR/+CME ERROR
Parameter
<n>
See Test command
Unsolicited message
+CREG: <stat>