Standards BS - British national standards - Page 8217

BSi – The company, BSI British Standards, is a national standards body of the United Kingdom (NBS) and it was actually the very first one in the world. It represents national and social interests of Great Britain in all European and international standardization organizations and in the development of business information of British institutions of all sizes and sectors. BSI British Standards cooperates with manufacturing and service industries, various companies, the government and with consumers as well in order to facilitate the production of British, European and international standards. A part of BSI Group, BSI British Standards, works closely with the government of the United Kingdom, especially in the Department for Innovations, Universities and Skills (DIUS).

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BS 6450-6-6.1:1986 WITHDRAWN

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Simple call-routing mode (SCRM).. Specification for the simple call-routing mode of PBX operation, with terminating stations treated as an entirety.

WITHDRAWN published on 30.9.1988

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BS 6450-6.1:1993 WITHDRAWN

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.

WITHDRAWN published on 15.2.1993

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electronic design (pdf) (214.80 USD)

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BS 6450-7:1984 WITHDRAWN

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Specification for the procedure of in-service observation for PBXs undergoing type approval.

WITHDRAWN published on 30.9.1988

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BS 6450-7:1990 WITHDRAWN

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.

WITHDRAWN published on 28.10.1990

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