[OpenSIPS-Users] OpenSIPS 2.4 SIPREC no RTP

VOIP Security voip.security at protonmail.com
Wed Dec 4 11:42:50 EST 2019


I am posting this issue because I am struggling to make openSIPS with SIPREC to work. I have tried various ways
but still no success for RTP. Here is my network topology -
OpenSIPS - as X.X.X.X
Orkaudio - and also listening on

Both UACs are registered to openSIPS via its X.X.X.X public IP. I am able
to send the call to orkaudio successfully but after the call disconnects
orkaduio shows this message -
 session callid=B2B.195.839325.1575063266 localparty=200 remoteparty=100
duration=33 has no rtp

And whenever openSIPS sends INVITE to orkaudio, Ork audio sends 200OK SDP
back and then openSIPS sends ACK but never send any SDP response or any
media back. And on that INVITE openSIPS sends this IP in c
element of SDP.
Here are my rtpproxy settings -
modparam("rtpproxy", "rtpproxy_sock", "udp:")
modparam("rtpproxy", "default_set", 1)

This is inside relay route  -

if (isflagset(NAT_FLAG) && has_body("application/sdp")) {

                        xlog("RTPPROXY Sock used is


Please help me to fix this issue and I know I am messing up somewhere in
osips config file. I will appreciate any help.

Thanks and regards
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