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 co
nnections are T1 lines. Currently we have IPSec VPN with overlay routing ove
r the internet for data. So how do I calculate the bandwidth for each site i
f all sites do conferencing simultaneously.

My rought estimate is: 
512k + L3 + L2 + IPSec + GRE

regards,
syed khalid ali

[ Post a follow-up to this message ]

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@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Syed Khalid Ali
Sent: Tuesday, December 18, 2007 5:46 AM
To: cisco-voip@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

[ Post a follow-up to this message ]

Hi

Thanks for the reply. My customer have Ploycom HDX 9004 at head office and H
DX 9001 at branch offices. It will be very helpful if you provide me more in
formation about these devices.

regards
Syed Khalid Ali
----- Original Message ----- 
From: Philip Walenta 
To: 'Syed Khalid Ali' ; cisco-voip@puck.nether.net 
Sent: Tuesday, December 18, 2007 9:03 PM
Subject: RE: [cisco-voip] Video Call Bandwidth requirements


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 t
he 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 bandw
idth.  The company I work for (Polycom) can see a 512k conference drop on ou
r units to as little as ~128k depending on the video conditions).



----------------------------------------------------------------------------
--
From: cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck
.nether.net] On Behalf Of Syed Khalid Ali
Sent: Tuesday, December 18, 2007 5:46 AM
To: cisco-voip@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 co
nnections are T1 lines. Currently we have IPSec VPN with overlay routing ove
r the internet for data. So how do I calculate the bandwidth for each site i
f all sites do conferencing simultaneously.

My rought estimate is: 
512k + L3 + L2 + IPSec + GRE

regards,
syed khalid ali

[ Post a follow-up to this message ]