Telephone Numbering Plan

A telephone numbering plan defines the pattern of digits for a country phone number. It defines the country-specific components of phone numbers, display format styles, and codes. The codes include country codes, international prefixes, area codes within a country, and mobile prefixes.

You can specify country-specific mobile prefixes to determine if a phone number is mobile or not. You can also create multiple telephone number display formats for a country. For example, for the US phone format, you define the phone country code as 01, fixed area code as three numbers in length, and subscriber number as seven digits in length. You can create a telephone format for domestic display, such as [phone], and a format for international display, such as 999-999-9999.