Patent ID: 6351452
Filing Date: 2002-02-26
Classification: H04J,H04Q

Abstract:
A telecommunication device for interconnecting multiplexed high speed voice and data channels, each multiplexed DS1 high speed voice and data channel carrying a serial stream of digital data bits and having sufficient capacity to carry multiple DS0 voice and data channels, the telecommunication device comprising:a backplane receptive of each of the multiplexed DS1 high speed voice and data channels; a plurality of framer cards connected to the backplane, each framer card being receptive of N of the multiplexed DS1 high speed voice and data channels, each framer card segmenting the serial stream of digital data bits into frames of data and multiplexing the N DS1 channels to a rate of at least N times DS1, with this multiplexed signal provided as an output from the framer cards; a primary controller card connected to the backplane and receptive of the frames of data from each of the framer cards in the multiplexed signal, the controller card performing a time slot interchange on various ones of the DS0 channels in the multiplexed DS1 high speed voice and data channels; and a redundant controller card connected to the backplane and receptive of the frames of data from each of the framer cards in the multiplexed signal, the controller card performing a time slot interchange on various ones of the DS0 channels in the multiplexed DS1 high speed voice and data channels; wherein each of the controller cards include logic therein to determine which of the primary and redundant controller cards are active to perform the time slot interchange and which of the controller cards are in standby.