TechContrarian

Important edit October 7- the original post stated Windows 2008 R2. This is incorrect we do not support that version at this time. The correct version should be Windows 2003 or Windows 2008.
Check out the following figure. That’s no illusion-it’s an Office Communicator user communicating with a Gmail user.

If you can’t wait to try this, you have come to the right place. Before you start, ensure that the following requirements are met:

You organization has a properly configured Office Communications Server 2007 R2 environment.
There is a properly configured Edge Server in your Office Communications Server environment.
You have permissions to request a server certificate from a public or private CA.
You have permissions to create DNS SRV and A records on the Internet.
There is a server that is running Windows Server 2008 on which to install the XMPP Gateway in your network perimeter.
The rest of this article assumes that you [...]