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BS 6789-6.2:1989
M00000247
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BS 6789-6.2:1989 Apparatus with one or more particular functions for connection to certain public switched telephone networks. Specification for series connected apparatus. Apparatus having less than maximum allowable impairments
standard by BSI Group, 02/28/1989
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Requirements for apparatus for connection, in series with a subscriber's main apparatus such as a telephone instrument or a data modem, to the Public Switched Telephone Networks (PSTN) either directly or when the series apparatus forms part of a Relevant Branch System for PSTN. To be read in conjunction with BS 6789-1:1984,BS 6789-6.1:1986Cross References:
BS 6305
BS 6789:Part 1
BS 6789:Section 6.1
CCITT Recommendation P.53
Telecommunications Act 1974