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The QueryCategoryBySubscriber function fetches an item published in a specified enhanced presence container which is selected based on the access control lists (ACLs) associated with the indicated Subscriber and Source Network.


string QueryCategoryBySubscriber(
  string or Uri Publisher,
  string Subscriber,
  string ExternalSourceNetwork,
  string CategoryName,
  bool PublisherIsPhone



The identity of the presence publisher. Can be a SIP URI, a user URI in the form user@host, or a telephone number.


The identity of the presence subscriber. Must be in the form user@host.


The identity of the presence subscriber. Must be in the form user@host.


The name of the presence category.


Optional. The value is true if the publisher is a phone; otherwise, false.

Return Values

Returns the specified string.


Office Communications Server 2007 provides the infrastructure to enable client applications to publish and subscribe to extended, or "enhanced," presence information. The enhanced presence infrastructure includes categories and containers. Categories are individual pieces of presence information, such as status, location, or calendar state. Containers are logical buckets into which clients publish instances of various categories of presence information.