[Users] RTPProxy non working?

[Federico Giannici]

I solved it by myself: looked at the source code and found that the "c" 
option force nathelper to change both "c=" lines.

So the question is: why it is not active by default?
Are there any contraindications?

Bye.


Federico Giannici wrote:
> I'm trying to install rtpproxy. It usually works, but there are some 
> cases that don't work.
> 
> For example, when a Cisco PSTN gateway is called, RTP traffic is proxied 
> in one direction only. I think the problem is in the handling of the 
> reply received from the gateway: it have two "c" lines but only one is 
> modified.
> 
> Here it is the body of the original reply:
> 
> v=0.
> o=CiscoSystemsSIP-GW-UserAgent 2199 2489 IN IP4 83.211.2.216.
> s=SIP Call.
> c=IN IP4 83.211.2.217.
> t=0 0.
> m=audio 18850 RTP/AVP 8 13 101.
> c=IN IP4 83.211.2.217.
> a=rtpmap:8 PCMA/8000.
> a=rtpmap:13 CN/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-11.
> a=direction:passive.
> 
> And here it is the body modified by rtpproxy:
> 
> v=0.
> o=CiscoSystemsSIP-GW-UserAgent 2199 2489 IN IP4 83.211.2.216.
> s=SIP Call.
> c=IN IP4 83.211.2.217.
> t=0 0.
> m=audio 35086 RTP/AVP 8 13 101.
> c=IN IP4 195.120.250.49.
> a=rtpmap:8 PCMA/8000.
> a=rtpmap:13 CN/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-11.
> a=direction:passive.
> a=nortpproxy:yes.
> 
> Only the secondo "c" line contain the IP of our rtpproxy. I don't know 
> RTP enough to understand if the problem is in rtpproxy or in the gateway.
> 
> 
> Thanks for any info.
> 


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    |ederico Giannici      http://www.neomedia.it
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