Wireshark-users: [Wireshark-users] Troubleshooting VOIP calls
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From: Joe Beams <beamsws@xxxxxxxxx>
Date: Mon, 22 Nov 2010 10:55:25 -0500
I am attempting to figure out why call quality is soo poor, I have got a packet capture from our system with 2 calls in it.  I am just not sure exactly what I am looking at. Reading through what I could find on google I think it looks like I am dealing with jitter due to latency. My packet capture shows:
 
Max Delta: 1020 ms for both calls
Max Jitter: (between 91-97) 
Mean Jitter: (between 39-41)
No lost packets. 
 
So, I guess my question is how do I figure out why these values are so high? Is there any thing else I should look at in wireshark to give me an indicator as to what is going on?
 
Thanks, Joe