Siemens AC75 manual Lacstr

AC75 AT Command Set

8.4 AT+CREG

s

<stat>(num)(&V)

0	Not registered, ME is currently not searching for new operator
	Normally, status 0 occurs temporarily between two network search phases
	(status 2). However, if it persists, one the following reasons may apply:
	• Automatic network selection is active, but probably there is
	- no SIM card available
	-	no PIN entered
	- no valid Home PLMN entry found on the SIM
	• Manual network selection is active and the selected network is available,
	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
	In either case, user intervention is required. Yet, emergency calls can be made
	if any network is available.
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 reasons:
	• 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
	• Authentication or registration fails after Location Update Reject due to one
	of the following reasons:
	- #2 ... IMSI unknown at HLR
	-	#3 ... Illegal MS
	-	#6 ... Illegal ME
	Either the SIM or the MS or the ME are unable to log into any network. No
	further attempt is made to search or log into a network. User intervention is
	required. Emergency calls can be made, if any network is available.
4	Unknown (not used)
5	Registered, roaming
	The ME is registered at a foreign network (national or international network)

<lac>(str)

Two byte location area code in hexadecimal format (e.g. "00C3" equals 193 in decimal).

AC75_ATC_V01.002	Page 201 of 569	10/30/06
Confidential / Released