Cause
The equipment that sent this cause value receives a message containing a message type the equipment does not recognize, either because the message type is not defined or it is defined but not implemented by the equipment.
This cause value has local significance only. The ISDN network between the user and the equipment generating the cause value sends:
Proposed Solution
Procedure
- Check if the protocols at each end of the interface match, for example, both sides are AT&T Custom or both sides are NI-2. If the ends use different protocols, it indicates that the ends use protocols with different information element encoding.
- Check the diagnostic information generated by Communication Manager for the message type identifier of the unrecognized message.
