ATM communication system with interrogation of output port servers for available handing capacity
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United States of America Patent
Stats
-
Sep 5, 1995
Grant Date -
N/A
app pub date -
May 2, 1994
filing date -
May 7, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ATM communication system has an ATM switch having a plurality of input ports and a plurality of output ports, each of the input ports being fed from an input port server and each of the output ports being arranged to feed an output port server. The input port servers each have a plurality of buffer stores, one for each of the output ports to which output port data is transmitted through the switch. Each buffer store in the input port servers is arranged to interrogate the output port server with which it communicates by a bandwidth request before the transmission of data. This determines whether output port server data handling capacity is available, whereby ATM switch operation during periods of peak traffic is facilitated. The system includes a queuing arrangement for bandwidth requests received during periods when there is no available bandwidth capacity, the arrangement being such that requests are released in a predetermined order when capacity becomes available.
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