Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for private branch exchanges with terminating stations treated as an entirety.
STANDARD published on 15.2.1993
Designation standards: BS 6450-2:1993
Note: WITHDRAWN
Publication date standards: 15.2.1993
The number of pages: 32
Approximate weight : 96 g (0.21 lbs)
Country: British technical standard
Category: Technical standards BS