Hello, one suggestion from me would be to look to the actual SIP messages that are sent and received, in particular to the SDP if its changed/rewritten to the RTPEngine IP. If no changes are done, you probably did not engage RTPEngine correctly. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; On Behalf Of Pavithra Mohanraja Sent: Monday, October 19, 2020 12:01 PM To: supreeth herle &lt;herlesupreeth(a)gmail.com&gt;om>; Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt;rg>; Abdirahman A. Osman &lt;abdirahman.osm(a)gmail.com&gt;om>; David Villasmil &lt;david.villasmil.work(a)gmail.com&gt; Subject: [SR-Users] Kamailio IMS RTP Engine Hi, I have followed below link to setup rtp engine. https://open5gs.org/open5gs/docs/tutorial/02-VoLTE-setup/ RTP engine is started without any errors and it is enabled in pcscf also. I am using the config files of pcscf as per the above link .. still rtp packets are not reaching pcscf from UE . What could be the problem? The only difference is that i have deployed ims in kubernetes environment as pods. Kindly help. Thanks, Pavithra