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Enterprise Voice policies are essentially collections of phone usage records that are assigned to one or more users. Policies also include an option of enabling or disabling the simultaneous ringing feature. The simultaneous ringing feature enables users to configure Office Communicator such that incoming calls, in addition to ringing the user’s registered endpoints, also ring an additional nonregistered endpoint, such as a personal mobile phone. Normally, simultaneous ringing should be enabled, but in the event of excessive congestion, you can disable this feature.

OCS provides a default voice policy for an organization’s deployment. The default policy may be edited but not renamed or deleted. Most organizations will have additional voice policies that they create. An organization may choose either to apply a single voice policy to all users or to apply one or more policies on a per-user basis. The default policy is applied to any user that is not currently assigned a policy. This occurs for an individual user that is not assigned a policy when an organization applies policies on a per-user bases. The also occurs for all users if the policy an organization has selected to apply to all users is deleted.

Phone usage order is critical because in matching users to routes, the server compares phone usages from top to bottom. If the first usage matches the call route, the call is routed. The remaining phone usages provide backup in the event of route congestion or call failure.

Defining voice policies for users includes:

• Creating a default policy for your organization. This policy will apply to all users to whom you have not explicitly assigned a per-user policy.
  
  
• Defining one or more per-user policies as needed.
  
  
• Adding one or more phone usage records.
  
  
• Specifying whether to enable the simultaneous ringing feature for Enterprise Voice users (not available if you are enabling PBX integration).
  
  
• Creating voice policies in the Communications Server 2007 R2 MMC snap-in.
  
  
• Choosing or customizing a default policy if you want to apply a single policy to all Enterprise Voice users in your organization.
  
  
• Choosing the Use per useroption and then creating one or more special policies and explicitly assigning them to specific individuals or groups of users if you want to apply special policies to certain individuals or groups of Enterprise Voice users. Any users to whom you do not explicitly assign a policy are governed by the default policy.