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:
Dec. 17, 2002
Filed:
Nov. 12, 1998
Simon Daniel Breuckheimer, London, GB;
Roy Harold Mauger, Radlett, GB;
Julian Frank Barry Cable, Bishop's Stortford, GB;
Stephen Evans, Welwyn Garden City, GB;
Steve Leonard Fagg, Harlow, GB;
Sarah Lucy Wright, Harlow, GB;
Nortel Networks Limited, St. Laurent, CA;
Abstract
To segregate functionality and to eliminate redundancy in service logic and associated hardware that together control the interconnection of narrowband trunk circuits ( ) and broadband virtual channels ( ) of a mixed node communication system (FIG. 5), a switch fabric ( ) has an associated memory ( ) that contains a pre-provisioned table of mappings between narrowband trunk circuits (DS- s) and broadband virtual channel identities. Therefore, to establish an end-to-end connection, the switch fabric ( ) searches the pre-provisioned table ( ) for an available connection and then performs the necessary cross-connection between the narrowband trunk circuit is ( ) and the broadband virtual channel ( ). The mappings principally relate to the narrowband-to-switch fabric interface and, as such, avoid the requirement for UNI signalling translation and negotiation, although the mappings may also include the broadband-to-switch fabric interface.