Handsfree communication control method, portable radio...

Details Handsfree communication control method, portable radio... Handsfree communication control method, portable radio...

2008-09-30

2008-09-30

Urban, Edward (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S569200, C455S041200

Reexamination Certificate

active

10946529

ABSTRACT:
A channel disconnection detecting unit detects whether a voice channel is disconnected by an AG or by an HF. When the voice channel is disconnected by the AG, an AG control unit controls a modulation/demodulation unit to maintain a connection of the AG with a BS and a switching unit switches a voice signal to an AG speaker and an AG microphone. When the voice channel is disconnected by the HF, the AG control unit controls the modulation/demodulation unit to interrupt the connection of the AG with the BS.

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