Basic Videoconferencing instructions

The recommended way to use videoconferencing in DØ is through the ESnet Ad-Hoc service. More information about this service can be found on the Ad-Hoc pages. Some general information information is to be found on the H.323 background page.

There are three basic ways of connecting to a video conference which are outlined below.

Computer/Polycom Connections

The very basic configuration information for the computer programs and Polycom video consoles are:


ECS Service	82X, 85X, 88X (see Ad-Hoc background information)
ESnet Gatekeeper IP address	198.129.252.168 (or gk1.es.net, if your setup allows hostnames; see GDS information if your setup is registered with another gatekeeper)

IMPORTANT: Do NOT use NetMeeting to connect to a conference: it does not behave properly and will likely disrupt the conference for others. Users of Gnomemeeting should carefully read this page for setup instructions. Of particular importance is that Gnomemeeting must use the "Do not register with Gatekeeper" option (see the page for details).

Phone Connections

To initiate a phone link to a video conference call the number below and when prompted dial the meeting number (82xxx, 85xxx or 88xxx).


ESnet Dial-in Number	+1-510-883-7860 (do not call the DØ room directly!)

IMPORTANT: The dial-in service has a system-wide limit of 23 simultaneous telephone calls and so should ONLY be used to connect people without access to a computer or polycom to video conferences. If you are holding a phone conference please use the MeetingPlace phone conference system.

Streaming Connections

Streaming a video conference works for all three of 82X, 85X, 88X meeting numbers. It requires a computer with RealPlayer or QuickTime installed (both have free versions).


ESnet Streaming Sites	mcu1.es.net (82X), mcu2.es.net (85X), mcu3.es.net (88X)

Basic Videoconferencing instructions

Computer/Polycom Connections

Phone Connections

Streaming Connections

Other Documentation