Importance

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Abstract

An asynchronous switching network for a communication installation core including packet mode units directly or indirectly interconnected by identically designed and operated point-to-point links comprises a traffic control system including distributed access control arrangements in each packet mode unit to enable the unit to set the order of communication of packets sent to it by the other packet mode units according to constraints specific to it and imposed temporarily or permanently and/or constraints reported to it by the other units with which it communicates. Each transmission of a packet from a packet mode unit to another packet mode unit requires the sending of a request by the unit requiring to send to the unit with which it is required to communicate and the sending of an acquiescence in the reverse direction from the latter for each of the packet elements separately transmitted between the units.

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First Claim