[cisco-voip] Video Call Bandwidth requirements

[Philip Walenta]

This is going to greatly depend on how your video conferences will work.
 
Are you doing all sites to a central conference bridge?
 
Are you doing point to point, or is one unit hosting the conference?
 
Based on what you have below I'd say your bi-directional stream will be in
the neighborhood of 650k per unit (keep in mind - many video codecs have the
ability when little motion or sound is occuring to reduce the outgoing
bandwidth.  The company I work for (Polycom) can see a 512k conference drop
on our units to as little as ~128k depending on the video conditions).

  _____  

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Syed Khalid Ali
Sent: Tuesday, December 18, 2007 5:46 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Video Call Bandwidth requirements


Hi
 
Need help regarding video conferencing setup. We will have 8 site (including
head office). The minimum bandwidth per video call will be 512 kbps. The
connections are T1 lines. Currently we have IPSec VPN with overlay routing
over the internet for data. So how do I calculate the bandwidth for each
site if all sites do conferencing simultaneously.
 
My rought estimate is: 
512k + L3 + L2 + IPSec + GRE
 
regards,
syed khalid ali
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