A zone prefix is a dialed prefix that identifies the addresses to be serviced by a given gatekeeper. Zone prefixes are typically area codes and serve the same purpose as the domain names in the H.323-ID address space.
Use this procedure to delete a zone prefix.
Note: When you delete a zone prefix, any remaining references to the zone prefix might prevent a successful commit of the dial plan design. To locate residual references to the deleted zone prefix, choose Validate from the Design menu.
You must be in the Design View to delete a zone prefix.
Expand the dial plan tree to view all components.
Locate the zone which contains the zone prefix you want to delete.
Click the Zone Prefix tab.
Select the zone prefix you want to delete.
Right-click and choose Delete from the menu.
Click OK to confirm. The zone prefix is removed from the dial plan.
Click Cancel to cancel the procedure.