[asterisk-users] double NAT - one way audio
andregronwald78 at gmail.com
Sat Mar 11 10:50:00 CST 2017
I have a setup which is not working right now:
Provider - DSL-Router (192.168.2.1) - Bintec-Router (10.17.46.66) -
My issue: Everything works, but RTP is only going from my Asterisk
towards the provider. Asterisk is configured to use SIP-ports 55060 and
Those ports are forwarded on DSL-router to the bintec router and from
the bintec router to asterisk.
what I see is the Invite from provider goes to 192.168.2.1 and rtp port
7070. my asterisk responds with audio to be sent to ip address
220.127.116.11 port 51242.
Afterwards RTP goes from 10.17.46.99:51242 to 192.168.2.1:7070. but the
RTP back is not coming in.
I would expect the RTP traffic to be sent to 18.104.22.168 (intetnal
192.168.2.1) port 51242 - then i would have successfully two way audio.
But why is port 7070 used?
The DSL-router is a speedport w724v type A.
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