Each paging group is assigned a class of restriction (COR). Thus you can provide or deny access to different classes of users by setting calling permissions appropriately. Note that you can administer CORs so that remote callers can make speakerphone pages. If you do not want to allow remote users to page, you can use the Class of Restriction screen to set calling permissions for vector directory numbers (VDNs) and trunk groups so that neither can initiate pages. For more information on CORs, see Class of Restriction.