BS-6450-4 › Historical Revision Information
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for ports
BS-6450-4
-
REPLACED BY BS-7378-3
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SUPERSEDED
-- See the following:
BS-7378-3
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Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for ports
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Document Number
BS-6450-4
Revision Level
REPLACED BY BS-7378-3
Status
Superseded
Publication Date
May 1, 2009