Title: Audio coder properties in SDP
Hi,
 
Has anyone made a tool for RTP listening/snooping?  Along the lines of a Sage 930A but for
SIP/RTP.   I have had a few situations where we see traffic passing both ways but only get audio
in one direction.  Most likely sending silence?  It does not help when the vendors point fingers at each 
other.  It would also help when looking for audio quality problems.
 
What I had in mind was taking something like tcpdump and splicing it with the RTP portion of
a  softphone.  I actually started something along these lines, but did not have the time to complete
it.  I also considered creating a proxy with a 1 to 1 transcoder, but that would introduce another
variable into the system I am trying to troubleshoot, which I did not want to do.
 
Thanks,
Carl.
 

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