BS 6450-5-5.1:1984

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators.Facilities on private branch exchanges. Specification for facilities on private branch exchanges with terminating stations treated as an entirety.

NORMA vydaná dňa 30.9.1988

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The information about the standard:

Designation standards: BS 6450-5-5.1:1984
Note: NEPLATNÁ
Publication date standards: 30.9.1988
The number of pages: 40
Approximate weight : 120 g (0.26 lbs)
Country: British technical standard
Kategória: Technické normy BS