Isnd system having susbcriber line multiplexer with means for establishing different data links through d-channels on subscriber line and high rate transmission line
CA 1300768 C · Owner: Asano, Takashi · Inventors: Fujiwara, Ryuhei; Asano, Takashi; Fukazawa, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
42, Abstract of the Disclosure:, In an ISDN system comprising a plurality of DSLs each having a plurality of DTEs and an ISDN switch having a TEI list, a multiplexer is used for enabling each DTE to access the ISDN switch through a single primary rate DTL in the time division technique. The multiplexer comprises subscriber interfaces connected to DSLs, repectively. The subscriber interface has first TEIs assigned to DTEs on the corresponding DSL and has a first data link with each DTE on the basic interface D channel using a first LAPD frame signal with the fisrt TEIs. The subscriber interface has a second TEI assigned thereto and registered in the TEI list in the ISDN switch. The …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.