Digital switch-resident multi-circuit line card providing...

Details Digital switch-resident multi-circuit line card providing... Digital switch-resident multi-circuit line card providing...

2006-01-10

2006-01-10

Ngo, Ricky (Department: 2663)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S463000

Reexamination Certificate

active

06985491

ABSTRACT:
A multi-circuit emulating line card is installable in a single line card slot of the backplane of digital switch, and is configured to emulate the functionality of each of a plurality of digital switch line cards, respectively associated with plural digital subscriber circuits served by the switch. In the course of emulating these plural line cards, the multi-circuit line card provides connectivity between each digital subscriber circuit and a digital carrier communication link to plural digital subscriber loop circuits, such as BRITE cards of a remote terminal site. The line card of the invention also includes network and subscriber circuit-associated metallic link impedance simulation circuits for terminating a metallic test bus.

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