If the number called is a number of the existing dial plan, the call is routed through the network infrastructure according to the existing dial plan and the number called.

Example of presentation of E.164 national numbering

An international number plan for public telephone systems.

2004: American Samoa joins the North American Numbering Plan.

American Samoa joins the North American Numbering Plan, 2004

2004 – American Samoa joins the North American Numbering Plan

A mobile subscriber is able to request an outgoing call setup without dialing a Numbering Plan Area (NPA) number.

The numbering plan used in Canada is the North American Numbering Plan (NANP), covering not only Canada but also the U.S. and some parts of Mexico and the Caribbean.

E.165.1 (10/96) Use of escape code “0” within the E.164 numbering plan during the transition period to implementation of NPI mechanism

[3] ITU-T E.164 (1997): "The International Public Telecommunications Numbering Plan".

Recognizing a NANP-formatted number, the public switch telephone network will process the call as normal.

[ITU 1997] International Telecommunications Union, Recommendation E.164/I.331 – The international public telecommunication numbering plan, May 1997.

In a second embodiment the numbering plan of the visited network is downloaded to the terminal and the terminal translates the number.

Russia has an open numbering plan with 10-digit phone numbers.

E.164 is an ITU-T recommendation, titled The International Public Telecommunication numbering plan.