When you administer your system, the best strategy is to assign CORs to similar groups or objects. For example, you might create a unique COR for each type of user or facility, such as:

• Call center agents

• Account executives

• Supervisors

• Administrative assistants

• Paging zones

• Data modules

You might also want to create a unique COR for each type of restriction.

You can assign the same COR to more than one object. Objects with the same COR might be similar objects, such as two telephones, or different objects, such as a telephone and a trunk group.

To enhance your system security, you can:

• Assign a separate COR to incoming trunk groups and outgoing trunk groups, and then restrict calls between the two groups.

• Set appropriate calling party restrictions and Facility Restriction Levels (FRLs) to limit the calling permissions as much as possible.