[Freeswitch-users] No audio after Remote SDP:

Mark Campbell-Smith mcampbellsmith at gmail.com
Sun Dec 20 03:58:02 PST 2009


I'm sure this is a NAT issue, but I'm not sure what options to use.

I have a Linksys SPA3102, NAT'd on the internet (remotely) and
connected to my FS on the otherside of the world, which is also
natted.  A PAP2T is connected on the same subnet as the FS.  The 3102
registers successfully and a call can be set up from the PAP2 to the

However, after FS receives the Remote SDP the audio stops (ring tone
stops in my case)

2009-12-20 22:29:57.848463 [DEBUG] sofia.c:3646 Channel
sofia/internal/sip:2001 at entering state
2009-12-20 22:29:57.848463 [DEBUG] sofia.c:3657 Remote SDP:
o=- 18490612 18490612 IN IP4
c=IN IP4
t=0 0
m=audio 16432 RTP/AVP 2 100 101
a=rtpmap:2 G726-32/8000
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15

I notice that the ip address in the o and c fields indicate a local IP
address.  Should this IP address be an external IP address of the 3102


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