A method and a detector unit for setting up connections in a teletransmission network
CA 2251988 C · Owner: Dsc Communications A/S · Inventors: Christensen, Lars Gylling
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method of setting up connections for the transfer of information in the form of calls between at least two arbitrary subscribers in a teletransmission network (1), it is detected at a subscriber interface on the basis of an identification associated with a given call whether the call is of a first type or of a second type. Then the connection is set up via a first transmission path comprising one or more exchanges (2) in case of calls of the first type, and via a second transmission path bypassing the exchange or exchanges (2) in case of calls of the second type. A detector unit (25; 41) for use in the setting up of connections in such a teletransmission network (1) comprises …
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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 18, 1997 and granted October 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2019.
- 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
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Sources & verification
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.