Subrate voice switching over switching and telecommunication networks
CA 2261007 C · Owner: Lucent Technologies Inc. · Inventors: Deutsch, Douglas Anthony; Smith, David B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for switching full rate (e.g. 64 kilobit per second) signals and composite, signals comprising a plurality of subrate signals (e.g. 32 kilobit per second subrate signal). The apparatus includes a unit for compressing selected ones of a plurality of full-rate, signals into a smaller plurality of full-rate single and composite signals and apparatus for, decompressing composite signals into a plurality of full-rate signals. The main elements, of the switching fabric of the switch continue to switch full-rate signals. Advantageously, during periods of heavy load the switching network fabric of a switching system can carry, more calls, and more traffic can be carried between …
Read the whole patent
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 February 3, 1999 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.