Telecommunications system for providing both narrowband and broadband services to subscribers

US6314102A · kind A · utility

Assignee

• ALCATEL · FR

Inventors

• Richard M. Czerwiec · Raleigh, US
• Joseph E. Sutherland · Raleigh, US
• Peter Schepers · Bornem, BE
• Geert Arthur Edith Van Wonterghem · Eeklo, BE
• Marlin V. Simmering · Clayton, US
• Eduard C. M. Boeykens · Bornem, BE
• Chris Van Der Auwera · Mechelen, BE
• Peter A. R. Van Rompu · Puurs, BE
• Kurt Pynaert · Comines-Warneton, BE
• Daniel A. C. Verly · Sint-Niklaas, BE
• Gilbert Van Campenhout · Hoboken, BE
• Richard H. Bailey · Raleigh, US
• Robert N. L. Peschi · Brussels, BE
• Dirk Van Aken · Brussels, BE
• Emmanuel F. Borowski · Ekeren, BE
• Peter Paul Frans Reusens · Laarne, BE
• Herman L. R. Verbueken · Borgerhout, BE
• Frank Ryckebusch · Ekeren, BE
• Koen A. G. De Wulf · Steenokkerzeel, BE

Key dates

• Filing date: Jul 10, 1997
• Grant date: Nov 6, 2001
• Expiry date: Jul 10, 2017

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q2213/13389
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An architecture, as well as various components, of an asynchronous transfer mode (ATM) subscriber access multiplexer (ASAM) system can be implemented using an XDSL (x-Digital Subscriber Line) using DMT (Discrete Multitone) or CAP (Carrierless Amplitude Phase Modulation) between a plurality of subscribers and a corresponding plurality of line termination equipment in a shelf that also includes network termination equipment for connection to an ATM network. The line termination and network termination equipment are interconnected by a bus internal to the shelf for providing subscriber access. Separate lowpass filters are provided at each end of a twisted wire pair between the shelf and each subscriber equipment. A shelf can be used as a hub for connecting to a remote shelf that includes the line termination equipment for connection to subscribers. Although the internal bus of the shelf is shown in a non-redundant embodiment, an increased level of equipment protection can be provided by placing one half of a redundant equipment pair in one shelf and the other half in the other shelf and sharing network termination equipment between such shelves.