[OpenSIPS-Users] help nat problems

[troxlinux]

2008/12/17 Iñaki Baz Castillo <ibc at aliax.net>

>
>
> Not enough info to suggest a problem cause.
> You should inspect the SDP in the INVITE received by the callee and
> the 200 OK received by the caller in all the cases, and verify if they
> make sense (if you are using RtpProxy for these calls you should see
> there the IP of RtpProxy, if not you get unidirectiaonal audio and
> so).
>
> Also, being behind symmetric NAT doesn't matter here since you are
> using RtpProxy.
>
> Question: Are all your phones in the same network? is the proxy and
> RtpProxy behind NAT (I hope not)?


the extension 123 and 202 is in the same netwotk behind a symmetric nat and
my server this in another network and he has an ip public .

the problem is that when those extensions call there is not you
bidirectional audio, alone in one of them


I see in the sdp of the message that the proxy puts me an a=nortpproxy:yes
and not you because!

ideas as solving this problem?

v=0
o=202 8000 8000 IN IP4 192.168.10.40
s=SIP Call
c=IN IP4 190.184.22.152

t=0 0
m=audio 35036 RTP/AVP 18 101
a=sendrecv
a=rtpmap:18 G729/8000
a=ptime:20
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-11
a=nortpproxy:yes



regards

rickygm
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