Phone conference system

Details Phone conference system Phone conference system

H - Electricity

04

M

379/81

H04M 1/60 (2006.01) H04M 3/56 (2006.01)

Patent

CA 1206653

PHONE CONFERENCE SYSTEM ABSTRACT OF THE DISCLOSURE A phone conference system which includes micro- phones and a speaker or speakers which are connected to a telephone apparatus. In the phone conference system, the required number of units, which provide a speaker or speakers connected via an amplifier to a receiving line, a preamplifier-mixer unifying the outputs of the micro- phones, and a summing amplifier unifying the output of the preamplifier-mixer and the output a microphone or microphones from another unit, are connected in cascade fashion to the telephone apparatus.

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