You can restrict calls from one COR to another COR. You can use COR-to-COR calling restrictions to prohibit user access to specific telephones or specific trunk groups, such as CO trunk groups. Any or all trunk groups can be in a trunk-restriction COR. The system routes restricted calls to intercept tone.
Note:
COR-to-COR calling restrictions from a station to a trunk do not apply when Automatic Alternate Routing (AAR), Automatic Route Selection (ARS), or Uniform Dial Plan (UDP) is used to place the call. In these cases, use Facility Restriction Levels (FRLs) to block groups of users from accessing specific trunk groups.
