BS 6450-4:1993

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for ports.

NORMA vydaná dňa 15.12.1993

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The information about the standard:

Designation standards: BS 6450-4:1993
Note: NEPLATNÁ
Publication date standards: 15.12.1993
The number of pages: 162
Approximate weight : 517 g (1.14 lbs)
Country: British technical standard
Kategória: Technické normy BS