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MC55 AT Command Set
8.3 AT+CREG
Command Description
Read command returns the URC presentation mode
tus of the ME. The location information elements
registered to the network.
Use the write command to select the type of URC. Two types of URCs are available:
=1: +CREG:
<n>
<stat>
=2: +CREG:
<n>
<stat>
Parameter Description
(num)(&W)(&V)
<n>
(&F)
0
1
2
(num)(&V)
<stat>
0
1
2
3
MC55_ATC_V01.05
Confidential / Released
[,
,
]
<lac>
<ci>
disable URCs
enable URC +CREG:
enable URC +CREG:
tration including location information. Please note that optional parameters will
not be displayed during call.
Not registered, ME is currently not searching for new operator
There is a technical problem. User intervention is required. Yet, emergency
calls can be made if any network is available. Probable causes.
•
No SIM-Card available
•
No PIN entered
•
No valid Home PLMN-Entry found on the SIM
Registered to home network
Not registered, but ME is currently searching for a new operator.
The ME searches for an available network. Failure to log in until after more than
a minute may be due to one of the following causes:
•
No network available or insufficient Rx level.
•
The ME has no access rights to the networks available.
•
Networks from the SIM list of allowed networks are around, but login fails
due to one of the following reasons:
-
#11 ... PLMN not allowed
-
#12 ... Location area not allowed
-
#13 ... Roaming not allowed in this location area
After this, the search will be resumed (if automatic network search is
enabled).
•
The Home PLMN or an allowed PLMN is available, but login is rejected by
the cell (reasons: Access Class or LAC).
If at least one network is available, emergency calls can be made.
Registration denied
•
If automatic network search is enabled:
Authentication or registration fails after Location Up-date Reject due to one
of the following causes:
-
#2 ... IMSI unknown at HLR
-
#3 ... Illegal MS
Page 191 of 469
and an integer
<n>
<stat>
and
are returned only when
<lac>
<ci>
to report status of network registration
<stat>
[,
,
<stat>
<lac>
<ci>
s
m
that shows the registration sta-
=2 and ME is
<n>
] to report status of network regis-
obile
2/10/04
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