May be I miss some important details? No suggestions? Thank you.
> Hello, all. > Using nathelper + rtpproxy for subj. Kamailio has public and private > network interfaces. Asterisk is only private. RTP Proxy is working in > bridge mode and relaying traffic from UAC to Asterisks. > Everything is working fine, except one configuration. When the client is > behind router ( a specific one, I do not have an access there to > check ), and this UAC is making a call to other public extension, which > is behind router, then RTP Proxy is relaying traffic to the caller, > using another UDP port, then the packets arrive. > For instance: > UAC 1 -> UAC 2 > PUBLIC_IP:10 > KAMAILIO_IP:5555 > KAMAILIO_IP:5678 > PUBLIC_IP:12 > While for the UAC 2 it looks like: > PUBLIC_IP:20 > KAMAILIO_IP:6767 > KAMAILIO_IP:4564 > PUBLIC_IP:20 > The source and destination UDP ports are the same. As result, I can hear > UAC 1 and he cannot hear me. > In case of we have UAC 3, which is behind other router, call is working > fine with same configuration. > "It's routers fault" you can say, but in the same configuration ( I mean > network, not kamailio ) it worked, but when RTPProxy was not in bridge > mode and Kamailio and Asterisks were in public network. Reinvites are > not allowed in both cases. > The question is, why the source and destination UDP ports are different? > Using STUN in first case, cause without it, private IP written in > contacts and as result, traffic relayed from Kamailio is incorrect, > cause heading to private network which is unreachable. > Any ideas where to dig? _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users