[cisco-voip] Jitter - Codec issue?

[Howard, Chad]

RxType=G.729
TxType=G.729
 
RxSize=10 
TxSize=20
 
Avg Jitter=8
Max Jitter=274
 
RxDisc=0
RxLost=1
 
TAC said inbound packet loss could cause the RxSize to be lower.  The
phone didn't show much loss, but jitter was high.

________________________________

From: Louis Marascio (lmarasci) [mailto:lmarasci at cisco.com] 
Sent: Thursday, October 26, 2006 9:58 AM
To: Howard, Chad; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Jitter - Codec issue?


Non matching values should not be a problem as far as I know.  What
codec does the info page show?  How many packets are being lost,
discarded, and what does the phone report as the avg & max jitter?
 
Thanks,
 
Louis

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Howard, Chad
Sent: Wednesday, October 25, 2006 3:39 PM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Jitter - Codec issue?


We have some users experiencing choppy voice - I think related to
jitter, but I don't know the actual cause.
 
During an active call I pressed the ? key twice to get the stats.
 
It shows the "RxSize: 10ms" and the "TxSize: 20ms".  I've seen issues
with that before (I think they need to match).  Anyone know how those
parameters get set, and if non-matching values are in fact a problem?
 
Thanks much.
 
Chad
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