Definitions for "E.164"
ITU-T recommendation for international telecommunications numbering, especially for ISDN and SMDS.
An 8-byte address format. In ATM it is typically used in public networks and it is provided by the telecommunication carriers, while 20-byte NSAP (Network Service Access Point) format addresses are used within private networks.
ITU recommendation for international telecommunication numbering especially ISDN, B-ISDN and SMDS. An evolution of the normal telephone numbers.