E.164

E.164 is an ITU-T recommendation, titled The international public telecommunication numbering plan, that defines a numbering plan for the world-wide public switched telephone network (PSTN) and some other data networks. The title of the original version and first revision of the E.164 standard was "Numbering Plan for the ISDN Era".

E.164

E.164 is an ITU-T recommendation, titled The international public telecommunication numbering plan, that defines a numbering plan for the world-wide public switched telephone network (PSTN) and some other data networks. The title of the original version and first revision of the E.164 standard was "Numbering Plan for the ISDN Era".