BS 6450-1:1993
$167.15
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators – Specification for general requirements
| Published By | Publication Date | Number of Pages |
| BSI | 1993 | 40 |
Applies to dealer boards and automatic call distributors, but not for connection to shared service lines, 1+1 carrier systems or connection in parallel with other apparatus whose ringer equivalence number exceeds 0.3. This standard has been presented for designation under the Telecommunications Act 1984.
