Video : OCS 2007 R2 – Deployment Validation Tool Answering Agent
The Deployment Validation Tool allows you to perform automated testing of calls between agents that are Office Communications Server 2007 R2 clients. It is included with Office Communications Server 2007 R2 Resource Kit Tools, available as a free download at the Microsoft Download Center at :
http://go.microsoft.com/fwlink/?LinkId=145159
You can find the technet page here :
http://technet.microsoft.com/en-us/library/dd572350(office.13).aspx
And watch this video from the Microsoft Technet Chopstick :