What are you using - rtpproxy, mediaproxy etc? There is an experimental patch for advertised_address support in rtpproxy on the internet, but I've never had a chance to try it out. You may want to try spce-v2.2, which comes with mediaproxy-ng supporting the advertised_address out of the box: http://www.sipwise.com/news/announcements/spce-v2_2-release/

On 29.06.2011 16:56, MingHon wrote:
will kamailio as proxy behind nat and UACs behind another nat work?

port forward sip and rtp done in the router.

UACs register successfully but no audio.

advertised_address = public_ip
advertised_port = sip

both define after the line of listen=public_ip

please advice.

thanks.

--
Sincerely,
Andrew Pogrebennyk

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