When matching of the incoming translation table fails, Q.931 cause code 0x01 (Unallocated Number) or ‘404 Not Found’ will be sent to the A-side of the call. There is no RADIUS record for the B-side of the call in this case.
Or if the remote side responds to the IMG with cause code 0x01, cause code 0x01 will be propagated to the A-side of the call.
The cause codes logged in the RADIUS records will be set to 0x01 for both sides of the call
The RTP IP addresses of the B-side (In case of egress SIP or H.323) will be logged as ‘0.0.0.0’ since the outgoing call is not attempted at all.