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H.323: The emerging TCP/IP

Videoconferencing Solution

The intent of this document is threefold. First a brief overview of the International Technology

Union (ITU) H.323 standard will be addressed. Following the overview, an enumeration of

products (both hardware and software solutions) supporting the H.323 standard will be listed.

Finally, a comparison of a number of H.323 products listing features, advantages and

disadvantages will be presented as derived from objective studies and reviews reported via the

Internet. Appropriate citations and URL references will be provided throughout the document

and at the conclusion of the report. An overview of the H.323 standard will now follow.

H.323 Standard Overview

The following information was derived from DataBeams H.323 Developer s Toolkit web site. It

can be found at: http://gw.databeam.com/h323/h323primer.html. DataBeam begins their Primer

by saying:

The H.323 standard provides a foundation for audio, video, and data communications

across IP-based networks, including the Internet. By complying to H.323, multimedia

products and applications from multiple vendors can interoperate, allowing users to

communicate without concern for compatibility.

In other words, a standardized agreed upon set of protocols, codecs, and network bandwidth

management tools have been developed which when implemented according to the specifications

outlined, should allow desktop video/audio conferencing and application collaboration between

different applications via the Internet or a TCP/IP Local Area Network (LAN). With the

increasing speed, specialized chip instruction sets and multimedia capabilities of computers,

Desktop video conferencing (DVC) is now becoming a possible alternative to expensive, high

bandwith, switched digital telephoney networks. Prior to the emergence of the ITU H.323

standard, TCP/IP multimedia conferencing was severely limited in fidelity and interoperability

between software platforms.

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Strona 1 - Videoconferencing Solution

H.323: The emerging TCP/IPVideoconferencing SolutionThe intent of this document is threefold. First a brief overview of the International TechnologyUn

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Product Description:The VTEL 128 Smart Station is a single card solution which requires at least a Pentiumprocessor. The system requires a minimum of

Strona 3 - Network Components:

RadVision H.323 ProductsRadvision sells several scaleable and stackable hardware solutions for creating H.323 networks.RADVision builds the following

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• October 25, 1999 - Cisco To Integrate RADVision Networking Products Into NewIP/VCTM Product Family for Internet-Based Videoconferencinghttp://www.r

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• Optional password protection for conference to ensure privacy• Each unit is password protectedCall Control:• Built-in gatekeeperRobust/Reliable:•

Strona 6 - • Full Installation Guide

Product Description:DC-Share is for UNIX platforms and is the first T.120 and H.323 data, audio and videoconferencing product compatible with Microso

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Internet.Com: Webopedia-H.323http://webopedia.internet.com/TERM/H/H_323.htmlTechWeb: Network Computing-Corporate.Net H.323: Videoconferencing approach

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Sun SunForum 3.0 (unix collaboration tool):http://www.sun.com/desktop/products/software/sunforum/Silicon Graphics SGIMeeting 1.1http://www.sgi.com/sof

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By its very nature, the IP (Internet Protocol) standard sends information in packets over theInternet, which are then transmitted and reassembled fo

Strona 10 - • Desktop Software

The video codec for the H.323 standard is H.263. This video codec ensures that video will not betransmitted higher then determined via the capability

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GATEKEEPERS:A Gatekeeper is the most important component of an H.323 enabled network. It acts as thecentral point for all calls within its zone and pr

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H.323 Software and Hardware SolutionsThe Intel system displayed above is a single card solution which requires at least a 233 MHzIntel Pentium II proc

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Product Description:The Sorsenson system displayed above is a single card solution which requires at least a P90 orfaster processor. The system requir

Strona 14 - • NetMeeting 3.0

Product Description:The PictureTel system displayed above is a single card solution which requires at least a Pentium133 (or higher) processor. The sy

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Product Description:The VCON Cruiser 150 system is a single card solution which requires at least a Pentium 200 (orhigher) processor. The system requi

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offers the reseller excellent opportunities for value-add. That’s why the VCON Cruiser 150 is aSm@rt choice." SM@RT RESELLER, November 2, 1998&qu

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