I am using Kamailio 3.1.5 . I am using RTP proxy also.

I have used default kamailio.cfg.sample fiile , and just added line #!define WITH_NAT.

I have another Main proxy. I wanted all my signalling and media packets should just pass through machine where Kamailio and RTP proxy are running.

With this I found, call is established, all signalling and media packets are passing through kamailio / rtp-proxy.

So far so good.

One way audio stream (from called party to calling party) quality is good.

The other audio stream (from calling party to called party is very bad.

Did anybody face this issue? Please help me to sort out this issue audio quality issue.

Regards

Austin