Exchange 2000 Conferencing Server provides an integrated conferencing solution with support for scheduling meetings from Outlook, data conferencing using T.120 protocol, and multimedia conferencing using H.323 and multicast technologies. It is managed by the Conference Management Service which coordinates conferencing resources for load balancing and high availability. The solution improves on traditional conferencing methods by making meetings easy to schedule and join with a single client experience across different conferencing modalities.

1. Exchange 2000 Conferencing Server Yoav Land VP Technologies – Unitech Microsoft Regional Director

3. C omponents CMS – Conference Management Service coordinates and manages conferencing technologies and resources, and tracks and controls access to conferences. Conference Technology Provider Data Conferencing Provider - Data Conferencing Provider is a conferencing technology based on the T.120 protocol stack that provides collaboration tools such as those found in Microsoft NetMeeting®. Data Conferencing Provider provides a T.120 multipoint control unit for data conferencing clients.

4. Video Conferencing Provider – Video Conferencing Provider is a conferencing technology that provides video and audio conferences over multicast-enabled IP networks. Video Conferencing Provider also provides an H.323 bridge that allows H.323 conferencing clients to participate in audio and video conferences. T.120 multipoint control unit (MCU) – The T.120 MCU service runs as a component of Data Conferencing Provider and provides network connections between participants in a data conference. Multicast Address Dynamic Client Allocation Protocol (MADCAP) – Configure the DHCP server to provide Multicast addresses.

5. Conference calendar mailbox – A conference calendar mailbox is an Exchange 2000 mailbox that stores the definitions and structure of all conferences Conference resources – Conference resources are Exchange 2000 mailboxes that conferencing clients invite when scheduling an online meeting. The conference properties, including the resource used, are stored in the conference calendar mailbox.

6. H.323 bridge – The H.323 bridge permits NetMeeting clients that are unable to connect directly to multicast conferences to connect through a H.323 unicast session. Codec – A codec (coder/decoder) is any technology for encoding and decoding data.

9. ECS Components Conference Client Outlook 2000 T.120 Active X Web Browser Exchange 2000 Conference Sever Conference Management Service (CMS) Conference Resource Conference Resource Conference Resource Video Conference Service Conference Calendar Mailbox Data Conference Service (DCS) T.120 MCU H.323 MCU Bridge T.120 MCU H.323 MCU Bridge T.120 MCU H.323 MCU Bridge

15. NetMeeting & Exchange Server 5.5 User1 User2 User3 User4 User5 Identical Data User0

16. ECS 2000 User0 Data Conferencing Server

17. IP Multicast Conferencing Router 4 User3 User1 User2 User5 User6 User4 Router 1 Router 2 Router 3 Router 5

20. Recap client experience

22. Conferencing Components IIS Exchange Conference Manager Active Directory Free Busy Exchange Client Components Other Services Other Video Data Resources & Configuration Conf. Calendar Conf. Rooms T.120 MCUs Schedule Conference T.120 client NetMeeting “ Join” Conference Client PCs Other clients MAD-CAP MMC Snap-ins Cert. Server Client Access Pages Video Data Conf. Calendar Conf. Rooms Client Access Pages

27. Data MCU Deployment Sample Conference Manager Backbone Internet ‘ External’ client connection Public focused T.120 MCU NET-C focused T.120 MCU NET-C Clients connections are load-balanced across MCU farm NET-A or NET-B focused T.120 MCUs NET-B NET-A

28. Single Site – Backbone Topology CMS & IIS LAN Router Router Router Router Clients Clients Clients Subnet B Subnet A Router CMS & IIS MCU MCU MCU MCU Subnet C

29. Single Site – Hub & Spoke CMS & IIS LAN Router Router Router Router Clients Clients Clients Clients MCUs MCUs Clients MCUs Clients Subnet 1 Subnet 3 Subnet 2

30. Multi Site Topology Router Router Router WAN/Internet Site 1 Site 2 Site 3 CMS & IIS MCU MCU CMS & IIS MCU MCU CMS & IIS MCU MCU