The VÍA is not really a problem. Check the IP in the SDP itself. On both the INVITE and the 200 there should be IP addresses reachable by both On Wed, 17 Apr 2019 at 09:24, Bonjour Madame <bonjourmadame30(a)gmail.com> wrote: -- Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337

Hello Bonjour, have a look e.g. to the nathelper module, the functions fix_nated_contact and fix_nated_sdp might help you here. In the default cfg you find also some more complete logic in the routes NATDETECT and NATMANAGE. Cheers, Henning Am 17.04.19 um 10:24 schrieb Bonjour Madame: Hello all, I am dealing with a no audio issue, phones are not even ringing. There is a private IP address in the "VIA" section of the message header of the INVITE: Via: SIP/2.0/UDP 192.168.1.25:65291;rport;branch=z9hG4bKPj9e3849d1981a4094a8323dad5826ec34 and in the contact too: Contact: <sip:5002@192.168.1.25:65291;ob><mailto:sip:5002@192.168.1.25:65291;ob> In the "status 100 Attempting to connect your call" from the server, I can see the public IP of the phone under received: Via: SIP/2.0/UDP 192.168.1.25:65291;rport=53990;branch=z9hG4bKPj9e3849d1981a4094a8323dad5826ec34;received=PHONE_PUBLIC_IP And in the "status 200 ok" from the server, I have: Via: SIP/2.0/UDP 192.168.1.25:65291;received=PHONE_PUBLIC_IP;rport=53990;branch=z9hG4bKPj9e3849d1981a4094a8323dad5826ec34 Record-Route: <sip:SERVER_PUBLIC_IP;lr=on;ftag=9284528256a54f8b81e692133a15684c> I don't know what steps to take to resolve this issue. _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://skalatan.de/services