GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

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GSM 09.02 Version 5.3.0: August 1996
Parameter or data error
If the HLR detects any parameter or data errors in the MAP_SEND_ROUTING_INFORMATION service
indication, the user error "Data Missing" or "Unexpected Data Value" is returned to the Gateway MSC. If
the error is detected in the response to the HLR request for a roaming number
(MAP_PROVIDE_ROAMING_NUMBER), the user error "System Failure" is returned to the Gateway MSC
in the MAP_SEND_ROUTING_INFORMATION service response.
Service Provider Failure
A MAP_P_Abort service indication may be received from the MAP Service Provider. This will abort the
dialogue, see clause 5 for a definition of the abort reasons. Depending on the reason for the abort and
where the abort originated, the associated dialogue with the MSC may be terminated. Otherwise the
procedure in the HLR is terminated.
MS Not Known
If the MS is not known to the HLR, the user error "Unknown Subscriber" is returned to the Gateway MSC.
This is contained in the MAP_SEND_ROUTING_INFORMATION service response. The procedure in the
HLR is then terminated.
Number Changed
If the number of the subscriber is changed inside the PLMN, the user error "Number Changed" is returned
to the Gateway MSC. This is contained in the MAP_SEND_ROUTING_INFORMATION service response.
The procedure in the HLR is then terminated.
Calls Barred
If the MS is barred from receiving incoming calls, the user error "Call Barred" is returned to the Gateway
MSC. The MS may be barred from receiving a call due to Operator Determined Barring (as defined in
TS GSM 02.41) in which case, the Call Barring cause "Operator Barring" is returned to the Gateway MSC.
The user error is contained in the MAP_SEND_ROUTING_INFORMATION service response. The
procedure in the HLR is then terminated.
Subscription Check Failure
If Network Signal Information is provided, the HLR will perform a service subscription check on this
information. If this check fails, depending on the reason for failure, the user error "Bearer Service Not
Provisioned" or "Teleservice Not Provisioned" is returned to the Gateway MSC. This is contained in the
MAP_SEND_ROUTING_INFORMATION service response. The procedure in the HLR is then terminated.
CUG Reject
If the call fails the CUG call authorization check (this applies to incoming access check and outgoing
access if the call has been forwarded - see TS GSM 03.85 for conditions), the user error "CUG Reject" is
returned to the Gateway MSC. This is contained in the MAP_SEND_ROUTING_INFORMATION service
response. The procedure in the HLR is then terminated.