H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/73
H04M 1/19 (2006.01) H04M 1/68 (2006.01)
Patent
CA 1289284
SECURITY HANDSET Abstract of the Disclosure A security device for use with a telephone handset having a microphone and an ear transducer is disclosed. It is adapted to prevent eavesdropping while the handset is in an on-hook position. The security device is comprised of switching means disposed in the handset adapted to disable the transducers. The switching means is switched to a first state when the handset is placed within a first predetermined orientation corresponding to a secure mode and is switched to a second state when the handset is placed within a second predetermined orientation corresponding to an operative mode.
574389
Fortin Jean-Pierre
Mcclain Donald Ted
Nortel Networks Limited
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