Network termination enabling relief of call congestion in an exchanger
CA 2039999 C · Owner: Fujitsu Limited · Inventors: Ishibashi, Ryoichi; Yamamoto, Toshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a network termination connected to an exchanger and a plurality of terminal adaptors, and enabling relief of call congestion in an exchanger the network, termination includes: a reception port for receiving a reduction rate indicated by a congestion information area in a SDH frame input from the exchanger; a SDH frame transmission unit for transferring the SDH frame including a plurality of ATM cells, each ATM cell having a header field and an information field and the header, field having a busy bit field; an unusable cell preparation unit operatively connected to the SDH frame transmission unit for generating the ATM cell train including the unusable cells defined based on 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
- Filed April 8, 1991 and granted June 21, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.