Siemens MC55 manual =2 +CREGstat,lac,ci

MC55 AT Command Set

8.3 AT+CREG

Command Description

s

mobile

Read command returns the URC presentation mode <n> and an integer <stat> that shows the registration sta- tus of the ME. The location information elements <lac> and <ci> are returned only when <n>=2 and ME is registered to the network.

Use the write command to select the type of URC. Two types of URCs are available: <n>=1: +CREG:<stat>

<n>=2: +CREG:<stat>[,<lac>,<ci>]

Parameter Description

<n>(num)(&W)(&V)

	0(&F)	disable URCs
1		enable URC +CREG:<stat> to report status of network registration
2		enable URC +CREG:<stat>[,<lac>,<ci>] to report status of network regis-
		tration including location information. Please note that optional parameters will
		not be displayed during call.
	<stat>(num)(&V)
0		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
1		Registered to home network
2		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.
3		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
MC55_ATC_V01.05		Page 191 of 469	2/10/04
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