Cause

The call cannot be completed because the equipment sending this cause value has not implemented a service, feature, or supplementary service requested by the user, and none of the other cause values in the Service or option apply.

As an implementation option, this Cause value is mapped to Cause value 41 (Temporary Failure) when it is received at a CO as part of SS7 call handling.

Communication Manager does not originate Cause value 79.