<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>]]”
4 For a UE that requests PSM, enable network registration and location information
unsolicited result code:
“+CEREG:<stat>[,[<tac>],[<ci>],[<AcT>][,,[,[<Active-Time>],[<Periodic-TAU>]]]]”
5 For a UE that requests PSM, enable network registration, location information and
EMM cause value information unsolicited result code:
+CEREG:<
stat>[
,[<lac>],[<ci>]
,[<AcT>],[
<rac>][,
[<cause_type>]
,[<reject_cau
se>][,[
<A
c tive-T
ime>],[<Periodic-R
AU>]
]]] <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
5 Registered, roaming
6 Registered for “SMS only”, home network (applicable only when
<Act> indicates NB-IoT)
7 Registered for “SMS only”, roaming (applicable only when
<Act> indicates NB-IoT
8 Attached for emergency bearer services only
9 Registered for “CSFB not preferred”, home network (not applicable)
10 Registered for “CSFB not preferred”, roaming (not applicable)
<tac> String type; two bytes tracking area code in hexadecimal format (e.g. “00C3” equals 195 in
decimal)
<ci> String type; four bytes E-UTRAN cell ID in hexadecimal format
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