Example of using a dialing restriction and permission in an RPL

If a Long Distance RPL must

• prevent mailbox owners from dialing out to a 900 area code

• permit use of the dialing prefix 9, as well as local calls to a 9xx exchange and on-switch calls to extensions beginning with 9

Then the RPL must include the following:

• Restriction Code: 91900 (assuming that the caller must dial 1 to access a long-distance switch)

• Permission code: 9