AT Commands Reference Guide
80529ST10815A Rev.2– 2017-09-14
ReproductionforbiddenwithoutTelitCommunicationsS.p.A.writtenauthorization‐AllRightsReserved page77of233
+CEREG – Network Registarion Status
[,<cause_type>,<reject_cause>], when available, when the value of <stat> changes. Refer
subclause 9.2 for possible <err> values.
Note:
If the EPS MT in GERAN/UTRAN/E-UTRAN also supports circuit mode services and/or
GPRS services, the +CREG command and +CREG: result codes and/or the +CGREG
command and +CGREG: result codes apply to the registration status and location
information for those services.
Possible response(s):
+CME ERROR: <err>
+CEREG?
Defined values:
<n>:
integer type
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>[,[<tac>],[<ci>],[<AcT>]]
3 - enable network registration, location information and EMM cause value information
unsolicited result code.
+CEREG: <stat>[,[<tac>],[<ci>],[<AcT>][,<cause_type>,<reject_cause>]]
<stat>: integer type; indicates the 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 (e.g. out of E-UTRAN coverage).
5 - registered, roaming.
6 - registered for "SMS only", home network (not applicable)
7 - registered for "SMS only", roaming (not applicable).
8 - attached for emergency bearer services only (See Note 2).
9 - registered for "CSFB not preferred", home network (not applicable).
10 - registered for "CSFB not preferred", roaming (not applicable).
Note 2: 3GPP TS 24.008 [8] and 3GPP TS 24.301 [83] specify the condition when the MS is
considered as attached for emergency bearer services.
<tac>: string type; two byte tracking area code in hexadecimal format (e.g. "00C3" equals
195 in decimal).
<ci>: string type; four byte E-UTRAN cell ID in hexadecimal format.
<AcT>: integer type; indicates the access technology of the serving cell.
0 - GSM (not applicable)
1 - GSM Compact (not applicable)
2 - UTRAN (not applicable)