Method and apparatus for path testing in a time division multiplex switching network
CA 1056484 A · Owner: International Standard Electric Corporation · Inventors: Battocletti, Frank E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
After marker functions have been performed to set up a network path during normal call processing a continuity word is, inserted into the path. The output of the path is coupled back to the input via a test multiplexer at the input to circulate the continuity word. A word is taken from the path being tested after circulation and is compared to the original continuity word with identity of comparison being verification of continuity. Continuity test apparatus includes a continuity word register and a comparator. The comparator has inputs from the continuity word register and from the network output for the path being tested. The continuity word may be inserted in the path from an output …
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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 June 12, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 1996.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.