ČSN ETS 300640-ed.1 (873002)

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

STANDARD published on 1.7.1997

Czech preface only -
Print design (1.30 USD)

The information about the standard:

Designation standards: ČSN ETS 300640-ed.1
Classification mark: 873002
Catalog number: 22275
Publication date standards: 1.7.1997
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN