发明名称 TELEPHONE HEADSET IN-USE INDICATOR
摘要 A headset telephone having an in-use indicator for notifying passers-by when the wearer of the headset is carrying on a telephone conversation. In one embodiment of the invention, an in-use indicator comprising a light-emitting diode is disposed on the end of the headset's voice boom, and is illuminated in response to activation of the headset. In another embodiment of the invention, activation of the headset causes a transmitter to transmit a signal to a remote in-use indicator not physically connected to the remainder of the telephone system.
申请公布号 WO9428666(A1) 申请公布日期 1994.12.08
申请号 WO1994US05889 申请日期 1994.05.25
申请人 PLANTRONICS, INC. 发明人 REGEN, PUAL, L.;PUENTES, ANNA, MARIE, G.;HENSOLT, RICHARD, A.
分类号 H04M1/82;(IPC1-7):H04M1/00 主分类号 H04M1/82
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