The dream of using a telephone while walking about, independent of any wire attachments, may soon be realised — through an infra-red telephone. The first model of a West German infra-red telephone was on display at the “Telecom 79” world telecommunications exhibition in Geneva, Switzerland.
While the wall-attached stationary part of the telephone is connected in the traditional way to the house telephone set, the’ wireless receiver can be used anywhere in the room. Infra-red impulses, such as are used for the remote control of television sets or garage doors, make the necessary connection between the
telephone and its receiver in the room. The manufacturers \ also say the telephone cannot be tapped. A battery is installed in the receiver Sand this charges automatically when the receiver is placed on the stationary part of the telephone. It stores enough energy for several hours of continuous use.
F.M. Bateson
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Press, 31 October 1979, Page 30
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146Untitled Press, 31 October 1979, Page 30
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