Phone number fields The E.164 phone number standard ensures that all necessary information for a phone number is included and properly formatted to successfully route an international call over a territory's public telephone network. When a user enters a phone number, it is received and stored as a string of numbers. An E.164 phone number field automatically formats and validates the numbers so that they are E.164-compliant when displayed as local and international numbers. The E.164 phone number field type does not replace the phone field type. An E.164 phone number field displays: [Optional] A choice list for the phone number territory. [Always] An input box for entering phone numbers. [By Default] A red underline when a phone number does not match the format for the selected phone territory and cannot be saved. [Optional] A green underline when a phone number does not match the format for the selected phone territory but can be saved with Other / Unknown as the territory. Figure 1. Phone e164 Territories assignedTerritories are assigned to locations, and are not assigned directly to users.Dependent fieldsIn the dictionary, you can specify a dependent field in the User or Location field, which displays the appropriate territory in the selector choice list when a user enters a phone number.E.164 phone number field configurationAdministrators can use the phone number system properties and dictionary attributes to do certain things.E.164 phone number field system propertiesSeveral properties are available to configure E.164 phone number fields.E.164 phone number field dictionary attributesYou can override the global system property with certain dictionary attributes.Configure a territory phone display ruleThe string of numbers that make up a phone number is automatically validated and formatted for a specific territory by applying a series of regular expressions.