| Howard, Chad 2006-10-26, 7:11 pm |
| It is a WAN link (vendor MPLS). I'll check into the SLA idea, thanks.
________________________________
From: Linsemier, Matthew [mailto:MLinsemier@apcapital.com]
Sent: Thursday, October 26, 2006 1:39 PM
To: Howard, Chad; cisco-voip@puck.nether.net
Subject: RE: [cisco-voip] Jitter - Codec issue?
Remember that your Max Jitter is just that, the maximum Jitter for the
entire call. Your average jitter looks pretty normal for a WAN link.
What type of link is this again? Is this a Internet or WAN related
link? If you are using cisco routers you could enable some IP SLA
responders to dig deeper into the problem. It will tell you if you are
dropping packets, receiving out of order packets, and a load of other
informative data by sending test packets across the link.
Matt
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Howard, Chad
Sent: Thursday, October 26, 2006 2:28 PM
To: cisco-voip@puck.nether.net
Subject: Re: [cisco-voip] Jitter - Codec issue?
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@cisco.com]
Sent: Thursday, October 26, 2006 9:58 AM
To: Howard, Chad; cisco-voip@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@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Howard, Chad
Sent: Wednesday, October 25, 2006 3:39 PM
To: cisco-voip@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
________________________________
CONFIDENTIALITY STATEMENT
This communication and any attachments are CONFIDENTIAL and may be
protected by one or more legal privileges. It is intended solely for the
use of the addressee identified above. If you are not the intended
recipient, any use, disclosure, copying or distribution of this
communication is UNAUTHORIZED. Neither this information block, the typed
name of the sender, nor anything else in this message is intended to
constitute an electronic signature unless a specific statement to the
contrary is included in this message. If you have received this
communication in error, please immediately contact me and delete this
communication from your computer. Thank you.
________________________________
|