Patent ID: 6683848
Filing Date: 2004-01-27
Classification: H04J

Abstract:
A telecommunications device, comprising:a synchronization bus; a first controller coupled to the bus, the first controller operable to generate a plurality of first pulses and to communicate the first pulses using the bus; a second controller coupled to the bus, the second controller operable to generate a plurality of second pulses synchronized with the first pulses and to communicate the second pulses using the bus; and a card coupled to the bus and operable to receive the first and second pulses, the card operable to generate a plurality of internal pulses synchronized with the first and second pulses, the card operable to compare at least one internal pulse with at least one first pulse to detect a loss of synchronization between the internal pulse and the first pulse, the card operable to indicate this loss of synchronization, the second controller operable to determine a failure of the first controller in response to at least the indication from the card.