Hands-free handset for a cordless telephone

Details Hands-free handset for a cordless telephone Hands-free handset for a cordless telephone

2005-05-17

2005-05-17

Urban, Edward F. (Department: 2685)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S569200, C455S557000, C455S426100

Reexamination Certificate

active

06895260

ABSTRACT:
In a hands-free handset for a cordless telephone adapted for household use and including a base unit and a handset, the handset includes an automatic receiving and automatic hanging-up control loop, a voice loop and a port switching device. When the user plugs a speaker jack into a speaker socket of the port switching device, the voice loop will switch the voice signal to the automatic receiving and automatic hanging-up control loop, whereby the handset can automatically receive the voice signal or automatically hangs up.

REFERENCES:
patent: 4053717 (1977-10-01), Snider
patent: 5416829 (1995-05-01), Umemoto
patent: 5526403 (1996-06-01), Tam
patent: 5771464 (1998-06-01), Umemoto et al.
patent: 6125139 (2000-09-01), Hendrickson et al.
patent: 6154639 (2000-11-01), Kanazumi et al.
patent: 20040097264 (2004-05-01), Bodnar et al.

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