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Microsoft—Polycom Meeting Scenarios
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The Join the Conference dialog box opens in the Conversation window.
2 The IM session organizer can select / specify a callback number /
address to be used by the system, or selects Computer to use the
audio/video device used by Office Communicator itself.
The IM session organizer can select any other SIP, ISDN, PSTN, H.323
device to be called back by the MGC.
3 Click the Go button.
A SIP REFER request is sent to the conferencing server (MGC) with
the user's callback address.
While being "referred" and until the dial out from the MGC to the
participants happen, the "Calling…" status indication is displayed in
the IM session organizer Office Communicator client.
4 All other IM buddies get an invitation in their Office Communicator
IM pane, with PSTN dial-in details, and a hyper link to the
conference.
Each invitee can now select between dialing manually into the
conference or having the conferencing server dial back to the selected
conferencing device. Users are able to select any device for their
media participation in the conference including their PSTN phone,
ISDN video endpoint, a SIP UA (that can be their OC client) or an
H.323 video device.