User's Manual

CONFIDENTIAL
35
4.4.10 AT+CEREG EPS network registration status
Reports changes in network registration
- [set command]
: controls the presentation of an unsolicited result code when there is a change in the MT's EPS network
registration status.
- [read command]
: returns the status of result code presentation and an integer <stat> which shows whether the network has
currently indicated the registration of the MT
- [test command]
: list of supported <n>s
Command Response
+CEREG=<n> OK
ERROR
+CEREG? +CEREG: <n>,<stat>[,<lac>,<rac>,<ci>[,<AcT>]]
+CME ERROR: <err>
+CEREG=? +CEREG: (list of supported <n>s)
-<n>: numeric;
 0 disable network registration unsolicited result code
 1 enable network registration unsolicited result code +CEREG: <stat>
 2 enable network registration and location information unsolicited result code +CEREG:
<stat>[,<lac>,<rac>,<ci>[,<AcT>]]
-<stat>: numeric; EPS registration status
 0 not registered, MT is not currently searching an operator to register to
 1 registered, home network
 2 not registered, but MT is currently trying to attach or searching an operator to register to
 3 registration denied
 4 unknown
 5 registered, roaming
-<lac>: string; two byte location area code or tracking area code in hexadecimal format (e.g. "00C3" equals 195 in
decimal).
-<rac>: string; one byte routing area code in hexadecimal format (e.g. "1C" equals 28 in decimal). If no routing area
code is applicable, "00" (equals 00 in decimal) is provided.
-<ci>: string; four byte GERAN/UTRAN/E-UTRAN cell ID in hexadecimal format.
-<AcT>: numeric; access technology of the registered network