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 authorized 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 Invalid mandatory information Message type non-existent or not implemented Message type not compatible with protocol state Information element non-existent or not implemented Conditional IE error Message not compatible with protocol state Recovery on timer expiry Protocol error, unspecified Interworking, unspecified Non selected user clearing