UNITS Presentation By Larry Amiot Academic Technologies Northwestern University April 13, 2004

Videoconferencing  A conference call consisting of two or more sites with the ability to communicate between the sites via video and audio and possibly data.

Videoconferencing Technologies Access Grid (One in the Tech Institute) Access Grid (One in the Tech Institute) VRVS VRVS SIP-based SIP-based MPEG2 MPEG2 DVTS DVTS H.320 H.320 H.323 H.323

Complementary Technologies Web-based Virtual Classroom Web-based Virtual Classroom –Blackboard at NU Streamed Video Streamed Video –Real-time video –Archived Video Collaborative Tools Collaborative Tools –e.g. sharing PowerPoint –Netmeeting is one way

GateKeeper MCU H.323 Clients INTERNET H.323 Videoconferencing Web Browser Real Video H.323 H.320 Gateway ISDN POT’s line Telephone

Northwestern Videoconferencing Infrastructure Radvision ViaIP Radvision ViaIP –Multipoint Control Unit (MCU) –ECS Gatekeeper –ISDN/IP Gateway Public Rooms Public Rooms –Technical Institute (L363) –Library (Forum Room) –Wieboldt Building (Room 421 in Chicago Campus)

Northwestern Videoconferencing Infrastructure Other Videoconferencing Rooms Other Videoconferencing Rooms –Ward Room (Ward Building in Chicago Campus) –Sony Laboratory (Academic Technology in Library) –Pancoe Auditorium (Pancoe Life Sciences Building)

Video Addressing Information All endpoints are assigned a video address All endpoints are assigned a video address –“1” followed by last five digits of telephone number –My video number is MCU sessions have a service number (70, 74, etc) followed by a session ID (four or five digit number MCU sessions have a service number (70, 74, etc) followed by a session ID (four or five digit number –e.g

GDS Video Addressing All of the endpoints (terminals, Gateways, and MCUs registered to a Gatekeeper are in the same zone All of the endpoints (terminals, Gateways, and MCUs registered to a Gatekeeper are in the same zone Most zones world wide are a part of the ViDeNet Global Dialing Scheme (GDS) Most zones world wide are a part of the ViDeNet Global Dialing Scheme (GDS) The GDS gatekeepers are interconnected in a hierarchy The GDS gatekeepers are interconnected in a hierarchy

GDS Video Addressing The Northwestern Gatekeeper has been assigned a GDS zone number ( ) The Northwestern Gatekeeper has been assigned a GDS zone number ( ) Anyone registered with another GDS Gatekeeper can dial my terminal by dialing Anyone registered with another GDS Gatekeeper can dial my terminal by dialing Any one connected to the Northwestern Gatekeeper can dial someone connected to another GDS Gatekeeper by dialing their zone number followed by the video address of their terminal Any one connected to the Northwestern Gatekeeper can dial someone connected to another GDS Gatekeeper by dialing their zone number followed by the video address of their terminal

Typical Terminals Desktop terminals Desktop terminals –Polycom ViaVideo <$400 <$400 Connects to a PC via a USB (no Macs) Connects to a PC via a USB (no Macs) Conference Room Conference Room –Polycom Viewstation < Requires video monitor < Requires video monitor ~$3,000 ~$3,000 Remote control camera Remote control camera –Polycom 7000 ~$4,400 plus software maintenance ~$4,400 plus software maintenance Similar the Viewstation but latest version with upgrades Similar the Viewstation but latest version with upgrades

Typical Terminals Large Meeting Rooms Large Meeting Rooms –Polycom 4000 Rack mounted Rack mounted All external cameras All external cameras ~$8,000 ~$8,000

Northwestern Videoconferencing Web Pages Videoconferencing services at NU Videoconferencing services at NU Request or modify a conference Request or modify a conference Site information Site information Room schedules Room schedules Deploying videoconferencing Deploying videoconferencing Understanding videoconferencing Understanding videoconferencing Directory services Directory services Contact us Contact us

Contact US Videoconferencing help Videoconferencing help Purchasing equipment Purchasing equipment Room design Room design Understanding data sharing applications Understanding data sharing applications Fixing problems Fixing problems Understanding directory services Understanding directory services Understanding other videoconferencing technologies Understanding other videoconferencing technologies