Multiple path self-routing switching network for switching asynchronous time-division multiplex packets with availability signalling
Patent 5247513 Issued on September 21, 1993. Estimated Expiration Date: 
May 21, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 21, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesHigh-speed modular switching apparatus for circuit and packet switched traffic Packet switching network Patent #: 5020052 InventorsAssigneeApplicationNo. 703771 filed on 05/21/1991US Classes:370/396, Distributed switching370/410Having a signaling featureExaminersPrimary: Safourek, Benedict V.Attorney, Agent or FirmForeign Patent References
International ClassH04L 012/56Foreign Application Priority Data1990-05-22 FRAbstractA novel packet-oriented multiple path self-routing switching network for switching asynchronous time-division multiplexed packets is characterized in that each switch unit of at least one upstream stage of the switching network includes means for defining an available state in which the downstream switch unit is available for routing packet traffic and for transmitting availability status information to upstream switch units when the downstream switch unit is in that available state, and is further characterized in that each upstream switch unit includes means for receiving availability status information for those outputs leading to a switch unit in the available state, and for prohibiting access to any output for which such availability status information is not received.Other References
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