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BS 6450-1:1993 Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for general requirements
standard by BSI Group, 02/15/1993
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Full Description
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.Cross References:
BS 4727:Part 1:Group 01
BS 4727:Part 3:Group 01
BS 4727:Part 3:Group 02
BS 6301
BS 6305
BS 6317
BS 6328:Part 1
BS 6450:Part 7
BS 6701:Part 1
BS 6701:Part 2
CCITT Recommendation B.12
CEPT Recommendation T/SF23
BT Specification S1541
BT Specification T4512
BT Specification T4545
BT Specification D2015
BT Relay Sheet 11749
BT Relay Sheet 11896
BT Relay Sheet 18888
BT Relay Sheet 19014
BT Relay Sheet 19/5