FYI - Training Adapter

Managers and supervisors can listen-in and monitor calls of employees and staff for training/coaching purposes and join in the call at any time if required. As an added bonus, when using a wireless headset, you can now multi-task and roam the office helping others while you still listen-in to the original call. Part #03929-63 only from Headset Direct.

For more info:
http://www.headsetsdirect.com/accessories/03929-63.html