Barge feature on Unity Express

Version 1
    This document was generated from CDN thread

    Created by: Rosa Serrata on 04-03-2009 04:30:23 PM
    We have a UC520 and use Unity Express Call Manager. How can I program or setup our 7975g phones to be able to share a call without conferencing. We prefer to touch the side button the caller is on and barge in on the call. This is to help us train our employees in handling calls.
    Please advise.