BS 6450-1:1983

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators-Specification for general requirements

BSI Group, 09/01/1988

Publisher: BS

File Format: PDF

$125.00$251.46

Description

Published:01/09/1988

Pages:27

File Size:1 file

Note:This product is unavailable in Ukraine, Russia, Belarus

Specifies the requirements necessary for correct interworking with the analogue interfaces of the PSTN. Does not apply to PBXs for connection to shared service lines or 1 + 1 carrier systems, or to PBXs for connection in parallel with any other apparatus whose ringer equivalence number exceeds 0.3.

All current amendments available at time of purchase are included with the purchase of this document.

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$125.00 $251.46

BS 6450-1:1983

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators-Specification for general requirements

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