H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 3/10 (2006.01) H04M 1/50 (2006.01) H04M 3/42 (2006.01)
Patent
CA 2369415
An apparatus for adding functionality to a private telephone system, comprising: a processing unit monitoring a telephone line and operable to perform said added functionality; a talk battery; and a switch having an input for a telephone, and an output selectable between an input of said private telephone system and said talk battery, said switch being controlled by said processing unit.
Johns Dennis Elmer
Reed Gord
Simpson Al
Zoehner Paul
Gowling Lafleur Henderson Llp
Sasktel
LandOfFree
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