2 Jul
2006
2 Jul
'06
12:25 a.m.
Hello,
On 07/01/06 23:38, Kelvin Williams wrote:
I am encountering a problem when creating an outbound call using our
PSTN Provider.
I make the call, the phone rings (PSTN) and I can hear the other party
answer. They however, cannot hear me, and shortly thereafter the call
drops. I ngrep’d the call and found that they are sending me 200 OK’s
after the call is set up, and OpenSER appears to relay those back to
my EMTA. However, I never see the ACK return from my EMTA. What could
cause this problem?
your phone must send an ACK afte rreceiving the 200OK, otherwise the
callee will tear down the call after aprox. 20sec. No audio problem
could be if you are behind a NAT and you haven't configured the sip
server to do the NAT traversal (via nathelper+rtpproxy or
mediaproxy+python mediaproxy).
Cheers,
Daniel
Inbound calls are not a problem.
Thanks,
Kw
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