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prSSH ETS 300 640:1996 ed.1

Human Factors (HF); Assignment of alphabetic letters to digits on standard telephone keypad arrays

General information

40.20     Feb 9, 2026

40.60    May 11, 2026

DPS

DPS/KT 10

European Norm

Scope

This European Telecommunications Standard (ETS) defines the assignment of alphabetic letters to digits on standard telephone keypad arrays. The assignment of characters with diacritical marks, e.g. á, å, ç, ë, ñ, etc. on the standard telephone keypad array, or the assignment of other non-Latin character sets is outside the scope of this ETS.

Life cycle

NOW

IN_DEVELOPMENT
prSSH ETS 300 640:1996 ed.1
40.20 DIS ballot initiated: 12 weeks
Feb 9, 2026

Related project

Adopted from ETS 300 640: August 1996

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