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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 • Introduction • Connectivity methods – Multicast vs. H.323 • Codec bandwidth requirements • Requirements • Server • Client • Infrastructure • Configuration • Server • Client • Firewalls • Resources
Introduction 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.
Connectivity MethodsMulticast 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
Codec Bandwidth Requirements • 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)
RequirementsServer • 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
RequirementsClient • 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
RequirementsInfrastructure • 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)
RequirementsInfrastructure – Firewalls/Proxy Servers • 80 – Web traffic • 1503 – T.120 • 1720 – H.323 • 1731 – H.323 • >1024 – H.323
RequirementsInfrastructure – Proxy • Proxy servers • Reverse Web hosting
RequirementsInfrastructure – IGMP Support • Windows 2000 RRAS • IGMP support
ConfigurationServer • CMS • Access URL
ConfigurationServer (continued) • T.120 MCU • Local * • Internet
ConfigurationServer (continued) • Windows 2000 sites
ConfigurationClient • Bandwidth settings • Connection • Video • Audio
ConfigurationClient (continued) • Secure Conferences • Certificates *
Resources • 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.)