Outlook Web App now supports the use of SIP client integration with Office Communications Server. This provides a great feature set for users, but there are some things you must do when integrating with Communications Server to make it all work.
Author: Okan Gurer
Publication date: May 2010
Product version: Microsoft Office Communications Server 2007 R2, Office Communicator 2007 R2
Microsoft Exchange Server 2010 offers a new enhancement to its Client Access server role called Outlook Web App. The new Outlook Web App feature is very similar to Microsoft Office Outlook Web Access. Besides the name change, Outlook Web App offers a new feature that enhances the remote user’s capabilities for inter-client communications. Outlook Web App now supports the use of SIP client integration with Office Communications Server. Outlook Web App clients can share instant messaging (IM) with enhanced presence with other Outlook Web App clients and with Communications Server clients, such as Communicator and Communicator Web Access. This feature is a great convenience for remote users. However, there are issues that occur when using the suggested deployment steps that will keep the Outlook Web App client from becoming a SIP-enabled client. This article explains the cause of these issues and how to work around them to achieve a fully SIP-enabled Outlook Web App client.
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