RE: [Sip-implementors] RTP listening tool

[Sharad Goklani]

Title: Audio coder properties in SDP

This is possible using Ethereal tool from http://www.ethereal.com. It supports a plethora of protocols, including SIP and RTP.

 

Sharad

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Vikram Varma
Sent: Friday, January 03, 2003 3:00 AM
To: Wagner, Carl; [EMAIL PROTECTED]
Subject: RE: [Sip-implementors] RTP listening tool

I vaguely remember an rtpdump program.

The link used to be www.cs.columbia.edu/~hgs/rtptools/src, but it doesnt seem to exist anymore.

Vikram

 

-----Original Message-----
From: Wagner, Carl [mailto:[EMAIL PROTECTED]]
Sent: Thursday, January 02, 2003 4:06 PM
To: [EMAIL PROTECTED]
Subject: [Sip-implementors] RTP listening tool

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.