BS 6450-3.1:1993
Withdrawn Standard
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BS 6450-3.1:1993

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

Publisher British Standards Institution (BSI)
Publication Date 01/15/1993
Cancellation Date 05/01/2009
Page Count 30
Themes Conformity
EAN ---
ISBN ---
Weight (in grams) ---
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