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Author: Ram Ojha
Publication date: May 2008
Product version: Office Communications Server 2007 R2
OCS 2007 allows its client applications to publish and subscribe to Enhanced Presence information. The enhanced presence infrastructure includes categories and containers. State, note, contact information, or calendar data (e.g. Free/Busy) are examples of categories. Containers are logical buckets into which the clients publish the categories of presence information.
A user can control what presence information other users see. For example, if userA@fabrikam.com places userB@fabrikam.com in his Public container, userB can see only userA's name, e-mail address, and basic contact information. If userA places userB in his Personal container, userB can see detailed information like additional phone numbers, location etc.
OCS 2007 notifies watchers of presence changes for the container they have permission to access. OCS 2007 supports this functionality through the use of Access Control Lists (ACLs) that map a user’s contacts into Containers. Each end user can configure their ACLs via the “Access Level” or “Access Levels Management” view in the Office Communicator client. ACL’s can define the set of users which can access a container based on a number of different criteria:
URI list (e.g. “userA@fabrikam.com”) Domain List (e.g.“fabrikam.com”)Same EnterpriseFederated UsersPublic Cloud Users
The main features of the enhanced presence model are as follows:
To enable enhanced presence for a single user
After you have enabled your users for enhanced presence, deploy Office Communicator 2007 to all client computers for these users. After a user is enabled for enhanced presence, the user can no longer sign in to previous versions of Office Communicator, Communicator Web Access, or Communicator Mobile.
Note: When you do enable Enhanced Presence on the user object following the migration, the user is still able to sign-in using legacy clients. When the EH aware client signs-in, the database information is upgraded to include EH information. From this point forward, the legacy client does not function.
Any user created in OCS 2007 pool\server already has enhanced presence enabled and cannot be changed.
An example of user activity category publication in Enhanced Presence
For more information regarding Enhanced Presence, please see: http://communicatorteam.com/archive/2008/03/06/103.aspx Important links:OCS Enhanced Presence Model: http://www.microsoft.com/downloads/details.aspx?FamilyID=df0ba247-3884-43c7-a1e1-791d64b8bfa8&displaylang=enOCS Resource kit: http://www.microsoft.com/MSPress/books/10482.aspx