Video conferences with multiple user with Messenger 5.1

Hi,
i'm setting up LCS2005 SE with Windows Messenger 5.1 in my company,
involving around 1000 XP SP2 clients.
Everything is working fine, exept the fact that I cannot have multiple users
in a video chat. It seems only one-to-one video conversations are supported.
I need to find out if this is possible, or I have to consider using a
plugin, or else.

Found some controversial answers around the net.

Regards,

Massimiliano ZANON
Project Manager
XYZ Informatica

Greetings,

This is not supported without a SIP-based MCU, Radvision sells one of these.

--
Jonathan Kay
Microsoft MVP - Windows Messenger/MSN Messenger/Windows Live Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2006 Jonathan Kay.
You *must* contact me for redistribution rights.
--

"Massimiliano" wrote in message
...
Hi,
i'm setting up LCS2005 SE with Windows Messenger 5.1 in my company,
involving around 1000 XP SP2 clients.
Everything is working fine, exept the fact that I cannot have multiple users
in a video chat. It seems only one-to-one video conversations are supported.
I need to find out if this is possible, or I have to consider using a
plugin, or else.

Found some controversial answers around the net.

Regards,

Massimiliano ZANON
Project Manager
XYZ Informatica