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BS 6450-7:1990
M00000130
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BS 6450-7:1990 Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Specification for the procedure for in-service observation of PBXs undergoing type approval
standard by BSI Group, 10/28/1990
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Specifies the assessment of PBXs against the integrity of service requirements in BS 6450-1:1983 and the observation of PBXs against appropriate Parts of BS 6450 under operational conditions.Cross References:
BS 4778
BS 6450:Part 1:Section 6.1
Telecommunications Act 1984