ATM communication system

US5490138A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Gerd Niestegge · Munich, DE
• Volker Tegtmeyer · Munich, DE
• Hartmut Wolf · Bellinghauserhohn, DE

Key dates

• Filing date: Sep 26, 1994
• Grant date: Feb 6, 1996
• Expiry date: Sep 26, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2012/5632
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A communication system working according to an asynchronous transfer mode comprises ATM communication equipment units connected to one another, whereby a plurality of concentrator equipment units are connected to at least one of the ATM communication equipment units. The concentrator equipment units together with the corresponding ATM communication equipment units are thereby arranged in a ring line system. Within this ring line system, each of the concentrator equipment units is connected via a separate virtual path to, on the one hand, the corresponding ATM communication equipment unit and, on the other hand, to each of the remaining concentrator equipment units. A plurality of virtual connections having defined transmission capacities can be respectively conducted via the individual virtual paths. Particulars with respect to the transmission capacities already occupied for established virtual connections are kept separately for the individual virtual paths in the corresponding ATM communication equipment units and are updated with every set-up and clear-down of a virtual connection. According to the measure of these particulars, a new virtual connection is thereby allowed only g…