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Office 2007 Communicator R2

Do I need to have a "server" running OCS for this to function, or can it be setup directly on a laptop to run stand alone?

If I need a server, does it need to be a standalone server with just this on or can it be installed upon an existing server?

3 Solutions
It does require the server, it is not a client to client IM.

You should be able to put it on another server, either via VM or just as a secondary program.
smd333Author Commented:
OK - is it best ran from the Domain controller for certificate purposes?
How does it work externally - ie do I need to open ports in the firewall etc?
So long as your certificate authority is trusted on all of your clients (typically if domain attached, it will be), you shouldn't have any issues on that front.

You will need to ensure a Fully Qualified Domain Name (FQDN) is configured so the clients can connect back whether internally or externally, e.g. "ocs.yourcompany.com"

It's worth reading the Communications Server Guide over at TN: http://technet.microsoft.com/en-us/library/bb870391(office.12).aspx - step 4 contains valuable information on the prerequisites.

You would probably want to run separate servers if you plan for external access.  You would not want people connecting to your domain controller from externally.  Also you would need to have a front end server and then then an Edge server.  You would have to have an external cert created as well for the external clients.  If you are doing internal only you can create everything off of your local ca.  


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