“use” property is required, may repeat up to three times and is restricted to the list of values found in the Terminology Worksheet, x_BasicTelecommunicationAddressUse value set. Additional guidance for DIR: to be used for immediate direct communications between providers (e.g. pharmacist to physician for potential medication interaction issues).

The “value” property is mandatory and must follow the specifications as described in http://www.ietf.org/rfc/rfc3966.txt. The maximum length is 40 characters. Note: 1. No constraints have been applied to the content to restrict it to Canadian country codes AND 2. No constraints have been applied to the format. Best practice is to always include country code and area code when known.

The telecommunication schemes supported are restricted to the list of values found in the Terminology Worksheet, x_PhoneURLScheme value set.  (tel, fax)