Microsoft released the Office Communications Server 2007 R2 Web Scheduler that provides a basic scheduling experience. The Web Scheduler currently does not support scheduling a conference using the "assigned conference ID" (a.k.a. Reservationless Conference ID).  Support for this feature is available in the Conferencing Add-in for Microsoft Office Outlook. Conferencing Add-in for Microsoft Office Outlook continues to be the supported client for scheduling Office Communications Server 2007 R2  conferences and offers a more robust and complete experience than the Web Scheduler. Support for the Web Scheduler will be on a best-effort basis in line with our Resource Kit policies.

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