BS 6450-5-5.1:1984:1988 Edition
$167.15
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
Published By | Publication Date | Number of Pages |
BSI | 1988 | 40 |
Specifies requirements for facilities on PBXs within the scope of BS 6450:Part 2:1983.