The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2001
Filed:
Jul. 10, 1997
Richard M. Czerwiec, Raleigh, NC (US);
Joseph E. Sutherland, Raleigh, NC (US);
Peter M. L. Schepers, Bornem, BE;
Geert A. E. Van Wonterghem, Eeklo, BE;
Marlin V. Simmering, Clayton, NC (US);
Eduard C. M. Boeykens, Bornem, BE;
Chris Van Der Auwera, Mechelen, BE;
Peter A. R. Van Rompu, Puurs, BE;
Kurt Pynaert, Oost-Vlaanderen, BE;
Daniel A. C. Verly, St. Niklaas, BE;
Gilbert A. F. Van Campenhout, Hoboken, BE;
Richard H. Bailey, Raleigh, NC (US);
Robert N. L. Peschi, Brussels, BE;
Dirk M. J. Van Aken, Brussels, BE;
Emmanuel F. Borowski, Antwerp, BE;
Peter P. F. Reusens, Laarne, BE;
Herman L. R. Verbueken, Borgerhout, BE;
Frank Ryckebusch, Antwerp, BE;
Koen A. G. De Wulf, Steenokkerzeel, BE;
Alcatel, Paris, FR;
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.