[Users] 183 early media and NATed clients

Sajith T S sajithts at gmail.com
Mon May 7 16:52:30 CEST 2007


Hi,

This problem Jeff has presented here exists for rtpproxy too, true?

I too am wondering about a solution for this problem with early media,
and I suppose there are other OpenSER users like me.  How do you folks
deal with this?

Thanks,
Sajith.

Jeff Williams wrote:
> Guys,
>
> I'm wondering what solutions there are to this problem. We have some
> NATed clients making outgoing calls. The NAT traversal is done using
> mediaproxy and works fine. However, we have a problem with 183
> responses and early media ringing sounds.
>
> The problem is that before the NATed client starts sending out RTP
> data, mediaproxy doesn't know which IP and port to send the RTP
> traffic to.  Some of the NETed clients don't start sending out RTP
> traffic until the call is connected, therefore none of the early
> media (ringing sounds) reaches the user - making it sound like dead
> air.
>
> Any ideas?
>
> Jeff
>
>




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