No circuit available
Network out of order
No route to destination
Channel unacceptable
Operator determined barring
Normal call clearing
No user responding
User alerting, no answer
Call rejected
Number changed
Pre-emption
Destination out of order
Invalid number format (incomplete number)
Facility rejected
Response to STATUS ENQUIRY
Normal, unspecified
Temporary failure
Switching equipment congestion
Access information discarded
Requested circuit/channel not available
Resources unavailable or unspecified
Quality of service unavailable
Requested facility not subscribed
Incoming calls barred within the CUG
Bearer capability not authorised
Bearer capability not presently available
Service or option not available or unspecified
Bearer service not implemented
Requested facility not implemented
Only restricted digital information bearer capability is available
Service or option not implemented or unspecified
Invalid transaction identifier value
User not member of CUG
Incompatible destination
Invalid transit network selection
Semantically incorrect message
Message type not compatible with protocol state
Information element non-existent or not implemented
Conditional IE error
Recovery on timer expiry
Protocol error, unspecified
Interworking, unspecified