• BS 6789-7:1988

BS 6789-7:1988

Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators-Specification for apparatus with call barring facilities

BSI Group , 11/30/1988

Publisher: BS

File Format: PDF

$46.00$93.98


Requirements for apparatus incorporating facilities for barring certain outgoing calls or classes of outgoing calls to a PSTN. To be read in conjunction with BS 6789-1Cross References:BS 4778:Part 2BS 6305BS 6312BS 6317BS 6540:Part 4BS 6789:Part 1BS 6789:Section 3.1BS 6789:Section 6.1BT Specification D1804DTelecommunications Act 1984

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