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Presence Policy Settings

Communications Server 2007 R2

Topic Last Modified: 2009-03-04

A presence policy is a set of limits and restrictions that affect presence. The following table describes the available presence policy settings.

Table 1. Presence Policy Settings

XML nameDisplay nameDescriptionTypeValue

CategorySubscriptions

Maximum Number of ‘Subscriber Category’ Subscriptions

Limits the number of subscriber category subscriptions. For example, when Office Communicator subscribes to a user’s presence, it obtains a category subscription for each of the contact card, calendar data, note, services, and state categories.

A setting of 0 means that the user or contact object cannot be subscribed to by others.

Dd572188.note(en-us,office.13).gifNote:
This setting can have a significant impact on performance if it is set to a high number, and the average user has a large number of users subscribing to his or her presence.

Integer

0-3000

PromptedSubscribers

Maximum Number of Queued Presence Subscription Alerts

Limits the number of entries in the prompted subscribers table. This setting determines the maximum number of prompts that can be queued for a given user. For example, when user A subscribes to user B’s presence, user B gets prompted that user A is now subscribed to him or her, and an acknowledgement prompt is created in user B’s prompted subscribers table. After user B accepts, or acknowledges, the subscription, the acknowledgement prompt is removed from user B’s prompted subscribers table.

A setting of 0 means that the user does not get prompted when someone subscribes to his or her presence.

Integer or Token

0-500

By default, the Default Policy and Service: Medium presence policies are installed when you deploy Office Communications Server 2007 R2. The following table describes the specific settings of the two presence policies.

Table 2. Presence Policies

Policy nameDescriptionCategorySubscriptionsPromptedSubscribers

Default Policy

Policy for typical users. This is the default presence policy.

1000

200

Service: Medium

Policy for applications that require more users to subscribe to the object’s presence.

1000

0

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