Communication Manager provides several ways for you to restrict the types of calls your users can make, and the features that they can access.

You can use class of restriction (COR) to define the types of calls your users can place and receive. Your system might have only a single COR, a COR with no restrictions, or as many CORs as necessary to affect the required restrictions.

You will see the COR field in many different places throughout Communication Manager when administering telephones, trunks, and agent logins to name a few. You must enter a COR on these screens, although you control the level of restriction the COR provides.