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BS PD 6566:1992
M00000417
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BS PD 6566:1992 A draft amendment to BS 6789-7:1988 "Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators. Part 7. Specification for apparatus with call barring facilities"
standard by BSI Group, 10/31/1992
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Cross References:
BS 6305
BS 6317
BS 6789:Section 3.1
BS 6789:Part 5
BS 6789:Section 6.1
BS 6789:Part 7