Switching protocol providing controlled access to available asynchronous network service
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United States of America Patent
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Jun 25, 2002
Grant Date -
N/A
app pub date -
Mar 13, 1997
filing date -
Jul 25, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of controlling the flow of traffic in synchronous transfer mode (ATM) network (10), which brings into possible existence a class (class II) of ATM cells. The ATM network (10) comprises one or more ATM switches (14) coupled by links (20) providing communication channels between the ATM switches (14). The method subjects the class II cells received at an input port of a particular ATM switch (14) to control, originating within the switching element of that ATM switch. The method allows only up to a fixed number of class II cells from a particular input port to be in the switch awaiting onward transfer. Although the control is on class, it nonetheless tends to produce fairness in service among different connections.
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