Office communications server 2007 r2 planning guide

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Microsoft Office Communications Server 2007 R2

Planning and Architecture

Published: May 2009
Updated: October 2009
Updated: April 2010

For the most up-to-date version of the Planning and Architecture documentation and the complete set of the Microsoft® Office Communications Server 2007 R2 online documentation, see the Office Communications Server TechNetLibrary at
Note: In order to find topics that are referenced by this document but not contained within it, search for the topic title in the TechNet library at
This document is provided “as-is”. Information and views expressed in this document, including URL and other Internet Web site references, maychange without notice. You bear the risk of using it.
Some examples depicted herein are provided for illustration only and are fictitious.  No real association or connection is intended or should be inferred.
This document does not provide you with any legal rights to any intellectual property in any Microsoft product. You may copy and use this document for your internal, reference purposes.Copyright © 2010 Microsoft Corporation. All rights reserved.
Microsoft, Active Directory, Outlook, SQL Server, Visio, Visual C++, Windows, Windows Media, Windows PowerShell, Windows Server, and Windows Vista are trademarks of the Microsoft group of companies. All other trademarks are property of their respective owners.


Planning and Architecture for Office Communications Server2007 R2 1

Introduction to Planning for Office Communications Server 2007 R2 2
Planning Process 2
Planning Tool 4
Using the Planning Tool 4
Using the Planning Tool Results 5

Evaluating Your Organization's Solution Requirements 5
Instant Messaging, Presence, and Conferencing 6
IM and Presence 6
Instant Messaging 6
Presence 6
Conferencing 7
Web and A/VConferencing 7
Dial-in Conferencing 7
Conferencing Devices 8
Telephony 9
Voice 9
Call Management 10
Team-Based Call Forwarding 10
Call Routing and Queuing 11
Telephony Devices 11
External User Access 12
Chat Rooms 13
Monitoring 14
Types of Data Gathered 14
Benefits of Using Monitoring Server 14
Automatic Device Updates 15
Archiving andCompliance 16
Administration and Provisioning 16
Client Access 17
Client Comparison Table 18
Computer-Based Access 24
Office Communicator 24
Office Live Meeting Client 24
Conferencing Add-in for Microsoft Office Outlook 24
Office Communications Server Attendant 24
Group Chat 24
Web-Based Access 24
Comparing Communicator Web Access and OfficeCommunicator 26
Mobile Access 27
Mobile IM, Presence, and Conferencing Support for Mobile Clients 27
Outside Voice Control 28

Designing Your Solution 28
Things You Must Know Before Completing Your Topology Design 29
Infrastructure Considerations 29
Important: Voice Considerations 30
Power, Network, or Telephone Service Outages 30
Enterprise Voice Depends on Availabilityof Office Communications Server 2007 R2 and Devices 30
Alternative Means of Accessing Emergency Services 30
Emergency Calls and Multi-Line Telephone Systems 30
Conferencing Considerations 31
General Conferencing Considerations 31
Dial-in Conferencing Considerations 31
Edge Server Considerations 32
General Office Communications Server Considerations 32
UserConsiderations 33
Topology Design 33
Features and Components 34
Capacity Planning 39
User Models 39
Office Communications Server User Model 39
Communicator Web Access Model 41
Response Group Service User Model 43
Capacity Planning Requirements and Recommendations 44
Media Bandwidth Requirements and Recommendations 50
Mobile Data Bandwidth Requirements 50
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