Emergency local switching

Details Emergency local switching Emergency local switching

H - Electricity

04

L

H04L 12/12 (2006.01) H04M 3/24 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2111941

Disclosed is an apparatus and method for providing transmission between end users coupled to a digital loop carrier access system. During normal operation, the access system functions to transmit data and supervisory signals between each end user and a local digital switch. In the event of a failure in the coupling between the access system and switch, the access system provides transmission paths between each end user and designated users such as emergency services which are coupled to the same access system.

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