Importance

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Abstract

A congestion notifying device, which is provided in communication circuits subjected to congestion in an asynchronous transfer mode (ATM) network, comprises: a congestion indication signal generator for generating a congestion indication signal when congestion occurs within any one of the communication devices; an explicit forward congestion indication (EFCI) bit set position detector for generating set position information to detect a prescribed bit set position of each incoming ATM cell in response to a cell synchronization signal and a cell clock signal; and an explicit forward congestion indication (EFCI) bit set control unit for responding to the congestion indication signal and the set position information to set, on the prescribed bit set position of each incoming ATM cell, an explicit forward congestion indication bit for notifying of occurrence of the congestion in any one of the communication devices.

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First Claim