Telephonic communications – Special services – Anonymous party
Patent
1992-02-25
1995-05-09
Dwyer, James L.
Telephonic communications
Special services
Anonymous party
379250, 379388, 379406, 379240, H04M 342
Patent
active
054147638
ABSTRACT:
A telephone switching apparatus includes a line network to which first and second telephones are connected and a hands-free trunk whose input and output terminals are connected to the line network. The line network is controlled such that voices from the first and second telephones are transmitted to the second and first telephones, respectively, through the hands-free trunk. A call transfer apparatus includes an outside-line interface to which first and second outside lines are connected and an adjusting unit for comparing the volumes of voices from the first and second outside lines and adjusting the volumes of the voices in accordance with the results of the comparison. The voices input from the first and second outside lines and adjusted in volume are transmitted to the second and first outside lines, respectively.
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Canon Kabushiki Kaisha
Dwyer James L.
Lau Michael N.
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