define an area code rule

In the New Area Code Rule dialog box, specify how certain phone numbers in the same or other area codes need to be dialed.

The New Area Code Rule dialog box

The following table describes the options in the New Area Code Rule dialog box (or the Edit Area Code Rule dialog box).

Control	Description
Area code	Enter the area code that requires special dialing. It can be the same area code that you are dialing from.
Prefixes	If all of the prefixes in an area code are dialed the same way from your location, select the first option. If certain prefixes in the destination area code need to be dialed differently from the others, select the second option, and then click Add to specify each prefix.
Rules	If you need to dial numbers to access phone numbers in the defined area code and prefixes, select the Dial check box, and then type the numbers in the box provided. If the area code is required to dial numbers in the specified prefixes, select the Include the area code check box.