Videoconferencing

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Videoconference Coordination
Planning Your Department's Videoconference Endpoint
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Planning Your Department's Videoconference Endpoint

Table of Contents

Introduction

Network Considerations

Videoconference Equipment

Videoconference Room

Adding Your Endpoint to the UH H.323 Directory

Multi-point Videoconference Information

Network Considerations

The quality of a videoconference relies on the network connectivity between your department's endpoint and the site you wish to conference with (for point-to-point videoconferencing) or the MCU service (for multi-site videoconferencing).

Two network issues you need to consider when planning to deploy videoconferencing for your department are:

Bandwidth
Videoconferencing requires a lot of bandwidth. An average videoconference call is usually 384 kbps. A 384 kbps call uses about 450 kbps of bandwidth. Some department networks are on “shared” LAN that divides the bandwidth between everybody for activities such as email, Internet, etc. Your LAN needs to support “switched” Ethernet rather than “shared,” to ensure the videoconference does not compete for bandwidth with other users and result in poor quality connection (risk of packet loss and jitter).

Please check with your department network administrator or ITS if your endpoint has the appropriate network connection. Without a dedicated switched Ethernet connection to your endpoint, ITS cannot guarantee a reliable connection.

Firewalls
Firewalls prevent unauthorized use of networks and defend against hackers and others who might disrupt network operations. Because a firewall's primary purpose is to limit access, this presents a problem for those who want to set up a videoconference site. Firewalls are not part of the H.323 standard. H.323 uses dynamically allocated ports and is not very firewall-friendly. Make sure that your endpoint is not behind a firewall.


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© 2004 University of Hawaii
Updated: January 30, 2007