Patents

4,625,306

Data signal switching systems.
Filed: Nov. 30, 1984. Issued: Nov. 25, 1986.
Also GB 2,151,880 B issued: Dec. 16, 1983 (UK).

4,965,788

Self-routing switch element for an asynchronous time switch.
Filed: Oct. 14, 1988. Issued: Oct. 23, 1990.
Also GB 2,211,697 B issued: Jan. 2, 1992 (UK).

GB 2,238,934 B

Copy fabric for a multicast fast packet switch.
Filed: Dec. 6, 1989. Issued: Dec. 22, 1993 (UK).

5,222,085

Self-routing switching element and fast packet switch.

Filed: Oct. 22, 1990, Issued: Jun. 22, 1993.

5,367,518

Self-routing switching element and fast packet switch.
Filed: Aug. 14, 1992. Issued: Nov. 22, 1994.

5,396,491

Self-routing switching element and fast packet switch.
Filed: Oct. 14, 1992. Issued: Mar. 7 , 1995.

5,245,603

High-speed determining unit for prioritizing and arbitrating among competing input signals.
Filed: Jun. 10, 1991. Issued: Sep. 14, 1993.

5,379,297

Concurrent multi-channel segmentation and reassembly processors for asynchronous transfer mode.
Filed: Apr. 9, 1992. Issued: Jan. 3 , 1995.

5,444,702

Virtual network using asynchronous transfer mode.
Filed: Sep. 14, 1992. Issued: Aug. 22, 1995.

5,457,687

Method and apparatus for backward explicit congestion notification (BECN) in an ATM network.
Filed: Sep. 2, 1993. Issued: Oct. 10, 1995.

5,633,869

Virtual network using asynchronous transfer mode.
Filed: May 25, 1995. Issued: May 27, 1997.

5,852,601

Method and apparatus for reactive congestion control in an asynchronous transfer mode (ATM) network.
Filed: Jun. 9, 1997. Issued: Dec. 22, 1998.

5,892,924

Method and apparatus for dynamically shifting between routing and switching packets in a transmission network.
Filed: Jan. 31, 1996. Issued: Apr. 6, 1999.

5,920,705

Method and apparatus for dynamically shifting between routing and switching packets in a transmission network.
Filed: Jan. 30, 1997. Issued: Jly. 6, 1999.

6,948,003

Enabling a service provider to provide intranet services.
Filed: Mar. 15, 2000. Issued: Sep. 20, 2005.

7,773,519

Method and system to manage network traffic congestion.
Filed: Jan. 10, 2008. Issued: Aug. 10, 2010.