H.4 Service or option not implemented class
24.0083GPPCore network protocolsMobile radio interface Layer 3 specificationRelease 18Stage 3TS
H.4.1 Cause No. 65 "bearer service not implemented"
This cause indicates that the equipment sending this cause does not support the bearer capability requested.
H.4.2 Cause No. 69 "Requested facility not implemented"
This cause indicates that the equipment sending this cause does not support the requested supplementary service.
H.4.3 Cause No. 70 "only restricted digital information bearer capability is available"
This cause indicates that one equipment has requested an unrestricted bearer service, but that the equipment sending this cause only supports the restricted version of the requested bearer capability.
H.4.4 Cause No. 79 "service or option not implemented, unspecified"
This cause is used to report a service or option not implemented event only when no other cause in the service or option not implemented class applies.