XMPP-VOIP client

[stefferd]

Hi There,

Is there a client software for windows available somewhere that combines the messaging and voip features that Ebox offers?
I would really like to find something like the combination M$ LCS server + Office communicator.
Ideally it would be a client that even has SSO enabled, so if the software is installed on a windows-machine, it will use the windows credentials to auth against Ebox, so the end-user has a zero-configuration...
A package that can be rolled out over the network (an unattended install option in the setupfile), and prefereably one where we can give the server adress in the install procedure.something like:

SomeNeatClient.exe /q /s=192.168.80.90

anybody knows of a piece of software for this purpose?

TIA,

Stefferd