Digital Equipment Corporation

Top Layer Networks, Inc.

Richard L Szmauz

Barry A Spinney

Nigel T Poole

Michael Fine

Anthony G Lauck

George Varghese

Rajendra K Jain

Theodore L Ross

Krishna Narayanaswamy

Scott William Nolan

Joseph H Brown, Iv

Andrew J Smith

A process and system for flexibly switching connections of data packet flows between nodes of data processing system networks by dividing data packets into cells and logically linking these cells on multiple queues of linked pointer lists.

System and process for flexible queuing of data packets in network switching

A process and system for switching connections of data packet flows between nodes of data processing system networks operating on diverse protocols according to the application layer information on the data packets.

System and process for application-level flow connection of data processing networks

Apparatus and method for realizing a parallel implementation of run length coding. The system encodes control and data information into the respective link control and data streams and merges the same onto the communication link for transmission. In addition, the system separates link data information from control information upon receipt of the information stream and decodes the received link data and control information into the original information.

Parallel implementation of run length coding apparatus and method

Ideal for use in high-speed wide-area networks, such as HDLC as defined in ISO Standard 3309, a strong framing method for data packets significantly improves undetected error probability. In a run-length code type data communication scheme, wherein frame delimiter strings, abort strings and idle strings, are transmitted as control symbols, the method includes providing the frame delimiter string as a multi-symbol construct for delimiting the transmitted data, providing the abort strings and idle strings to respectively include minimum run lengths which are substantially longer than the individual symbols in the multi-symbol construct, transmitting data with control symbols as a bit sequence, and receiving and analyzing the transmitted data at the data-receiving device to detect the presence of bit errors.

Strong framing protocol for HDLC and other run-length codes

An integrated communications link in a communications network that is provided with apparatus which allows dynamic allocability of bandwidth among a plurality of channels. At least three different types of information can be carried on these channels, and the bandwidth of these channels are dynamic so that it can be changed according to a determinable scheme. The link also sends error control information with a message that informs the receiver how the bandwidth is to be allocated, this error control information providing an extremely high level of assurance that the receiver of the information will know how the received information is to be allocated.

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New Ipswich, NH, United States of America

Richard L Szmauz