Conferencing over the Internet with Exchange Conferencing Server
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Conferencing over the Internet with Exchange Conferencing Server Ryan J. Phillips Microsoft Business Applications Microsoft Corporation Agenda Introduction Connectivity methods – Multicast vs. H.323 Codec bandwidth requirements Requirements Server Client Infrastructure Configuration

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Conferencing over the Internet with Exchange Conferencing ServerRyan J. PhillipsMicrosoft Business ApplicationsMicrosoft Corporation


Agenda l.jpg
Agenda Server

  • Introduction

  • Connectivity methods – Multicast vs. H.323

  • Codec bandwidth requirements

  • Requirements

    • Server

    • Client

    • Infrastructure

  • Configuration

    • Server

    • Client

    • Firewalls

  • Resources


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Introduction Server

In today’s business model, collaboration and communication in real time is paramount to the success of an individual and/or company. To address this need, the Microsoft Exchange Conferencing Server provides a full range of audio/video and data conferencing services for the both the intranet and Internet workspace.


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Connectivity Methods ServerMulticast vs. H.323

  • Multicast

    • Spanning Tree

      • IGMP (RFC 2236)(http://www.faqs.org/rfcs/rfc2236.html)(Note that this is not a Microsoft site)

    • One-to-many

    • Not used in general internet connectivity

  • H.323

    • Unicast

    • Internet traversal

      • Firewalls and routers


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Codec Bandwidth Requirements Server

  • Audio

    • G.711 – 70 Kbps (default)

    • GSM 6.10 – 30 Kbps

  • Video

    • H.261 – 90 Kbps

    • H.263 – 90 Kbps (default)

      • (Only sends screen updates)


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Requirements ServerServer

  • Conferencing modes

    • Memory and CPU

      • Multicast – No additional memory required

      • H.323 – PII 450 MHz ~ 256 MB will host approx. 40 users

      • T.120 – PII 450 MHz ~ 256 MB will host approx. 2,000 users (*500 recommended)

  • Bandwidth *

    • Multicast (audio and video) – 128 Kbps or higher

    • T.120 (data) – 28.8 Kbps or higher

    • H.323 (data, audio, and video) – 160 Kbps or higher


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Requirements ServerClient

  • OS - Windows® 95, Windows® 98, Windows NT® 3.51, 4.0, Windows® 2000

  • Data and Video Conferencing Client

    • Windows 95, 98 – Pentium 133 MHz and 32 MB or higher recommended

    • Windows NT – Pentium 133 MHz and 64 MB or higher recommended

  • Multimedia peripherals

    • Audio/video card

    • Video camera

    • Headset ~ microphone ~ speakers


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Requirements ServerInfrastructure

  • Routers and firewalls

    • Packet/port filtering

      • 1503 – TCP (T.120)

      • 1720 – TCP (H.323 call setup)

      • 1731 – TCP (H.323 audio call setup)

      • Dynamic * – TCP (H.323 call control)

      • Dynamic * – UDP (H.323 streaming)


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Requirements ServerInfrastructure – Firewalls/Proxy Servers

  • 80 – Web traffic

  • 1503 – T.120

  • 1720 – H.323

  • 1731 – H.323

  • >1024 – H.323


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Requirements ServerInfrastructure – Proxy

  • Proxy servers

    • Reverse Web hosting


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Requirements ServerInfrastructure – IGMP Support

  • Windows 2000 RRAS

    • IGMP support


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Configuration ServerServer

  • CMS

    • Access URL


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Configuration ServerServer (continued)

  • T.120 MCU

    • Local *

    • Internet


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Configuration ServerServer (continued)

  • Windows 2000 sites


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Configuration ServerClient

  • Bandwidth settings

    • Connection

    • Video

    • Audio


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Configuration ServerClient (continued)

  • Secure Conferences

    • Certificates *


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Resources Server

  • Resources

    • IP Multicast RFC

    • IGMP RFC

    • H.323 Primer White Paper

    • ECS – H.323 White Paper

    • NetMeeting Resource Kit

    • Exchange 2000 Conferencing Server Product Info

(Note that some of these are non-Microsoft Web sites.)


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