ETSI ETS 300640-ed.1

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

STANDARD published on 15.8.1996

The information about the standard:

Designation standards: ETSI ETS 300640-ed.1
Publication date standards: 15.8.1996
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: European technical standard
Category: Technical standards ETSI