<br><br><div class="gmail_quote">On 1 July 2010 21:53, Dmitri Korotkov <span dir="ltr"><<a href="mailto:dmitri.korotkov@festart.ee">dmitri.korotkov@festart.ee</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hello,<br>
<br>
I have kamailio installation WITH_PSTN, WITH_NAT and rtpproxy.<br>
Using following scenario:<br>
[kamailio]<-sip trunk ->[asterisk gw] <->sip trunk <-> [PSTN provider]<br>
<br>
All kamailio sip subscribers are behind nat in different networks.<br>
<br>
1. OK. Local kamailio users can call one to other even they are on different networks behind nat.<br>
2. OK. Outgoing calls from kamailio users to PSTN work also very well.<br>
3. Not OK. Incoming from PSTN side calls have only one way audio.<br>
<br>
I tcpdump'ed kamailio box and found, that pstn provider sends RTP packets to kamailio IP in case of answered call.<br>
<br>
I guess that rtpproxy is not active in case of pstn call. Is it true ?<br>
<br>
I am using more less default kamailio config<br>
<br>
Could you please suggest solution ?<br>
<br>
BR,<br>
Dmitri<br><br></blockquote><div><br></div><div><br></div><div>Hi Dmitri,</div><div><br></div><div>Check out the nathelper module.</div><div><br></div><div>Regards,</div><div>Brian </div></div><br>