BS 6450-3.1:1993

Withdrawn

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Direct dialling in on private branch exchanges Specification for direct dialling in on private branch exchanges with terminating stations treated as an entirety

Available format(s)

Hardcopy , PDF

Withdrawn date

01-05-2009

Language(s)

English

Published date

15-01-1993

Publisher

British Standards Institution

Specifies requirements at the connection point for direct dialling in (DDI) on PBXs connected at the user's premises directly or via one or more pieces of other apparatus or wiring to the 2-wire presented DDI analogue interface of a PSTN and where the terminating stations together with cabling are treated with the PBX as an entirety. Applies to PBXs with their terminating stations that are installed on a single set of premises. Coverage includes definitions and abbreviations, conformance principles, electrical characteristics and PBX software.

Committee	W/-
DevelopmentNote	Inactive for the new design. Supersedes 90/94506 DC (09/2005)
DocumentType	Standard
Pages	30
PublisherName	British Standards Institution
Status	Withdrawn

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BS 6484:1984	Specification for electrical safety requirements for independent power supply units for indirect connection to certain telecommunication networks
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BS 2045:1965	Preferred numbers
BS 6450-6.1:1993	Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Simple call-routeing mode (SCRM) Specification for the simple call-routeing mode of PBX operation, with terminating stations treated as an entirety
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