A-4 Appendix ACall Termination CodeQ.931 Reason Code (00xx)Cause ValueCause ValueCause ValueCause ValueClassClassClassClassbitsbitsbitsbits7 6 57 6 57 6 57 6 5ValueValueValueValuebitsbitsbitsbits4 3 2 14 3 2 14 3 2 14 3 2 1NbrNbrNbrNbrCauseCauseCauseCause DiagnosticDiagnosticDiagnosticDiagnosticService/option not available0 1 10 1 10 1 10 1 10 1 10 0 0 10 0 1 01 0 0 11 0 1 01 1 1 13132393A3FQuality of service unavailableRequested facility not subscribedBearer capability not authorizedBearer capability not presently availService or option not availableFacilityidentificationService/option not imp.1 0 01 0 01 0 01 0 01 0 00 0 0 10 0 1 00 1 0 10 1 1 01 1 1 1414245464FBearer capability not implementedChannel type not implementedRequested facility not implementedOnly restr.Dig.Info BC. Is availableService or option not implementedChannel typeFacilityidentificationInvalid message1 0 11 0 11 0 11 0 11 0 11 0 11 0 11 0 11 0 10 0 0 10 0 1 00 0 1 10 1 0 00 1 0 10 1 1 01 0 0 01 0 1 11 1 1 1515253545556585B5FInvalid call reference valueIdentified channel does not existCall id does not exist for susp callCall identity in useNo call suspendedCall with the req call id is clearedIncompatible destinationInvalid transit network selectionInvalid message, unspecifiedChannel identityClearing causeIncompatibleparameter