BS 6450-7:1984

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

BSI Group, 09/30/1988

Publisher: BS

File Format: PDF

$125.00$251.46

Description

Published:30/09/1988

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

Specifies the assessment of PBXs against the integrity of service requirements in BS 6450:Part 1:1983 and the observation of PBXs against appropriate Parts of BS 6450 under operational conditions.

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

More BS standard pdf

BS 04/30057165 DC

BS EN 14931. Pressure vessels for human occupancy (PVHO). Multi-place pressure chambers for hyperbaric therapy. Performance, safety requirements and testing

$149.00 $298.08

BS 04/30113504 DC

BS EN 14933. Light weight fill and insulation products for civil engineering applications. Factory made products of expanded polystyrene (EPS). Specification

$136.00 $273.31

BS X 37:2004

Intumescent paint for aerospace purposes. Specification

$76.00 $152.40

BS 3388:2004

Forks, shovels and spades. Requirements and test methods

$175.00 $350.52