Patent ID: 6343077
Filing Date: 2002-01-29
Classification: H04L

Abstract:
A stackable UTOPIA switching apparatus for use in an Asynchronous Transfer Mode switch, comprising:an up-link end for connecting to an UTOPIA interface device, said up-link end having an input port and an output port operated independently, and said input port having an input buffer for storing a plurality of input queues, said output port having an output buffer for storing a single output queue; a down-link end for connecting to an UTOPIA interface device, said down-link end having an input port and an output port operated independently, and said input port having an input buffer for storing a plurality of input queues, said output port having an output buffer for storing a single output queue, said down-link end being able to connect to 31 slave multiplexers at the most when in master mode; a priority queuing logic circuit coupling to said input buffers and said output buffers of said up-link end and said down-link end for controlling a priority sequence for forwarding each incoming cell; and memory lookup interface means coupled to said input buffer and said output buffer of said up-link end and of said down-link end for interfacing memory means.