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:
Apr. 30, 2002
Filed:
Aug. 13, 1998
Roger F. Atkinson, El Cajon, CA (US);
Simon S. Ng, Cupertino, CA (US);
Robert J. Siefert, Escondido, CA (US);
William Ashley, Oceanside, CA (US);
Kenneth A. Beckman, La Mesa, CA (US);
Raymond Klein, Ramona, CA (US);
Taqua Systems, Inc., Centerville, MA (US);
Abstract
A multiple application switching platform includes a switch having a distributed open architecture and incorporating redundancy for enhanced fault tolerance. The switch includes at least one shelf having a midplane ( ) containing message buses and TDM data buses (A and B). Shelves may be interconnected to form a group wherein various circuit cards are connected to each shelf midplane. The circuit cards ( and ) perform call processing wherein each card within a group accessing a data bus is pre-assigned a unique set of time slots for each data bus within which that card may transmit onto that data bus. Each circuit card further includes an identification number that enables each card an opportunity to transmit onto a message bus (A and B). The circuit cards ( and ) include line or trunk switch cards that function as an independent switch to interface line or trunks to a shelf midplane. Communications between lines or trunks connected to any group shelf is facilitated by switch cards communicating with each other via messages sent over the message buses (A and B).