PRETS 300 640 : FEB 96
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
HUMAN FACTORS (HF) - ASSIGNMENT OF ALPHABETIC LETTERS TO DIGITS ON STANDARD TELEPHONE KEYPAD ARRAYS
Superseded date
01-08-1996
Published date
12-01-2013
Endorses the global standardization (dated) in ITU-T and ISO for guidance to telephone terminal manufacturers.
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