Patent ID: 6775726
Filing Date: 2004-08-10
Classification: G06F,H04L,H04Q

Abstract:
A system comprising:a computer having a first switch, the first switch having an open and a closed position, the computer is a Digital Subscriber Line Access and Network Testing Multiplexer (DSLANTM) and the plurality of computer peripheral devices are peripheral DSLANTMs; and a plurality of computer peripheral devices coupled to the computer in a daisy chain for receiving commands therefrom, each of the plurality of peripheral computer devices including a sensor and a second switch therein, the second switch having an open and a closed position, the second switch of each of the plurality of peripheral computer devices adapted to connect to the daisy chain a succeeding one of the plurality of peripheral computer devices in the daisy chain when the second switch of the each of the plurality of peripheral computer devices is in the closed position, and to disconnect from the daisy chain the succeeding one of the plurality of peripheral computer devices in the daisy chain when the second switch of the each of the plurality of peripheral computer devices is in the open position; wherein: the sensor of each one of the plurality of peripheral computer devices is adapted to detect a short circuit, when the first switch is in the closed position and the second switches of the plurality of peripheral computer devices preceding the each one of the plurality of peripheral computer devices in the daisy chain are in the closed positions.