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US5023780A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of operating a packet switching network

Assignee: Nortel Networks Ltd
•
Filing: 1991-01-03
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Granted: 1991-06-11
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Expires: 2011-01-03
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Abstract

Abstract A method of operating a packet switching network is disclosed in which a Systems Network Architecture (SNA) computer can control a remote terminal cluster controller and terminals coupled thereto via a switched virtual circuit connection to the terminal cluster controller. The terminals coupled to the terminal cluster controller are able to establish switched virtual circuit connections to other compatible computers, independent of the computer by which the terminal cluster controller is controlled. This is achieved by an access module of the network, to which the terminal cluster controller is connected, presenting different representations of the terminal configuration to the different computers.

Inventors

  • 👤 John R. Brearley

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:38
CPC Classifications
H; H04; H04L; H04L69/00

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 253 words
A method of operating a packet switching network comprising at least a first network access module having a plurality of terminals coupled thereto via a terminal cluster controller and at least two second network access modules each having a respective computer coupled thereto, the method comprising the steps of: storing in the first network access module information relating to a configuration of the terminal cluster controller and said plurality of terminals; establishing a first switched virtual circuit connection between the first network access module and one of the second network access modules having a first computer coupled thereto, wherein the first network access module provides a representation of said configuration of the terminal cluster controller and said configuration of the terminal cluster controller and said plurality of terminals from the stored information to the first computer via this first switched virtual circuit connection for control of the terminal cluster controller and said plurality of terminals by said first computer; establishing a second switched virtual circuit connection between the first network access module and one of the second network access modules having a second computer coupled thereto, wherein the first network access module provides a representation of a single one of said plurality of terminals coupled thereto via the terminal cluster controller to the second computer via this second switched virtual circuit connection; and establishing addresses in the first network access module for communications via the second switched virtual circuit connection between the second computer and said single one of said plurality of terminals.
Claim 2
Independent Claim 253 words
A method of operating a packet switching network comprising at least a first network access module having a plurality of terminals coupled thereto via a terminal cluster controller and at least two second network access modules each having a respective computer coupled thereto, the method comprising the steps of: storing in the first network access module information relating to a configuration of the terminal cluster controller and said plurality of terminals; establishing a first switched virtual circuit connection between the first network access module and one of the second network access modules having a first computer coupled thereto, wherein the first network access module provides a representation of said configuration of the terminal cluster controller and said configuration of the terminal cluster controller and said plurality of terminals from the stored information to the first computer via this first switched virtual circuit connection for control of the terminal cluster controller and said plurality of terminals by said first computer; establishing a second switched virtual circuit connection between the first network access module and one of the second network access modules having a second computer coupled thereto, wherein the first network access module provides a representation of a single one of said plurality of terminals coupled thereto via the terminal cluster controller to the second computer via this second switched virtual circuit connection; and establishing addresses in the first network access module for communications via the second switched virtual circuit connection between the second computer and said single one of said plurality of terminals.
Claim 3
Dependent Claim 37 words
A method as claimed in claim 1 and including the step of passing a command from said first computer to said terminal cluster controller via said first switched virtual circuit connection for controlling said terminal cluster controller.
Claim 4
Dependent Claim 43 words
A method as claimed in claim 1 and including the step of passing a command from said first computer to one of said plurality of terminals via said first switched virtual circuit connection for controlling said single one of said plurality of terminals.
Claim 5
Dependent Claim 41 words
A method as claimed in claim 1 and including the step of exchanging information, relating to monitoring network performance, between said first computer and said terminal cluster controller via said first switched virtual circuit connection for monitoring said terminal cluster controller.
Claim 6
Independent Claim 47 words
A method as claimed in claim I and including the step of exchanging information, relating to monitoring network performance, between said first computer and one of said plurality of terminals via said first switched virtual circuit connection for monitoring said single one of said plurality of terminals.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-06-10 1994-12-10 1995-06-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-06-10 1998-12-10 1999-06-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-06-10 2002-12-10 2003-06-11 $7700.00 Window Closed / Lapsed

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