RESERVED RING MECHANISM OF PACKET EXCHANGE NETWORK

摘要

PURPOSE: To provide an improved reservation ring mechanism adjusting contention in a wide band ISDN high speed packet exchange. CONSTITUTION: The reservation ring mechanism is provided with a means for circularly executing a series of steps and a comparison operation in a top-to- down order during at least one arbitration cycle and permitting the contended inputs to access to designated outputs in the top-to-down order. When the maximum permission number of competitors are always in a contention state on outputs, access to outputs is permitted to the maximum permission number of competitors during the respective arbitration cycles.