Telecommunications network restoration architecture

US5182744A · kind A · utility

Assignee

• AT&T Bell Laboratories · US

Inventors

• James D. Askew · Forest Park, US
• Chin-Wang Chao · Lincroft, US
• David R. Cochran · Easton, US
• Peter M. Dollard · Highlands, US
• Hossein Eslambolchi · Los Altos Hills, US
• William E. Goodson · Freehold, US
• Robert P. Guenther · Red Bank, US
• Omar Mansour · West Long Branch, US
• Liem Nguyen · Plano, US
• Sarma Tanuku · Howell, US

Key dates

• Filing date: Jan 3, 1991
• Grant date: Jan 26, 1993
• Expiry date: Jan 3, 2011

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2213/13353
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A restoration system is provided for enhancing the reliability of a telecommunications network such that particular traffic which is disrupted by, for example, a faulty link, may be quickly rerouted via an alternate route established "on the fly". In particular, each node and link forming the network is monitored, and in the event that such monitoring detects a faulty link or node then a central controller is notified. The controller is arranged to locate spare capacity and establish an alternate route, in which the continuity of the alternate route is confirmed before the disrupted traffic is transferred thereto.