This is one of the best features in the new release of Office Communications Server. There was Audio conferencing in OCS 2007 but the concept of bridge was missing. You couldn't create an audio room to invite the conference participants. One had to initiate the conference and invite others to let them join.
Office Communications Server admins missed this feature and often they integrated third party conferencing applications to enable this feature.
But now with the release of OCS 2007 R2... users would be able to create the conference room and share the details with others to join a conference. It means a user can join the conference if he\she does have proper details of conference.
An OCS user will have option to create both types of room - A conference for only AD authenticated participants and a conference which would allow anonymous users as well.
An OCS user will have option to create these conferences through Outlook.
conference with advanced options
By default, anyone with the conference calling number and your conference
ID can join your conference. If you want to restrict who can join your dial-in
conference, configure the following advanced Access options when
scheduling the conference:
Open Authenticated. Allow only participants that are in your organization to join the
Closed Authenticated. Allow only invited participants within your organization to join the
A sample conference entry information...
Install the Conferencing Add-In
Before you can schedule a conference that includes support for dial-in conferencing, you must install the Conferencing Add-in for Microsoft Outlook that was included with the Office Communications Server 2007 R2 installation media. Remove any earlier versions of the Microsoft Office Live Meeting client and Live Meeting add-in. Also ensure that Outlook is not running, and then install the more recent version of the add-in.