Direct Routing call log - 7015 and 7000 "Call ended by media agent"

solidpro I'm definitely not authoritative here - this is super deep into the workings of the media stack.  That being said, in this case I'm reasonably confident the "Media agent" here isn't Phone system bur rather the Voice App (Auto Attendant or Call Queue) that's managing the call.  The voice apps are media apps and they would have a user agent endpoint even though they're automated services.

So "Call ended by media agent" to me is that the voice app (AA or CQ) was responsible for ending the call.  "Call Ended by media agent because transfer completed successfully" sounds like that call leg was ended because another call leg was successfully established as the culmination of a call transfer.

I think support could give a definitive answer, but again this is pretty deep signaling stack stuff 🙂