Stackable UTOPIA switching apparatus for a broadband switching system
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United States of America Patent
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Jan 29, 2002
Grant Date -
N/A
app pub date -
Aug 3, 1999
filing date -
Aug 3, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A stackable UTOPIA switching device for use in an Asynchronous Transfer Mode switch is provided to connect to more digital subscriber lines (DSL). The inventive UTOPIA switching device can work along or be arranged in a tree-like hierarchy to connect to more DSLs. The UTOPIA switching device comprises an Up-link end and a down-link end. The down-link end can connect to 31 slave multiplexers or physical layers at the most. The up-link end can connect to master USD or slave USD. Both the up-link end and the down-link end have three input queues and an output queue for storing the cells. The cells are stored in the input queues and the output queues according to the control of a priority queuing logic circuits.
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