Daniel-Constantin Mierla writes:
why is that? in failure_route I call rtpproxy_mange() which calls unforce_rtp_proxy() which destroys the initiated session.
as explained in earlier messages of this thread, the situation unused rtp sessions pile up happens, e.g., when call parallel forks and some forks that needed rtpproxy respond negatively, e.g., with 480, and one responses with 200. thus failure route never gets called that would allow you to destroy the initiated session.
-- juha