Patent ID: 8594316
Filing Date: 2013-11-26
Classification: H04M

Abstract:
1. A voice call system having a personal computer terminal and a voice exchanger connected through a voice communications network and a voice call line, for making a voice call through said personal computer terminal which is controlled by said voice exchanger for reception, origination, and voice communication, said system comprising: a handset unit for making a call; and a hook switch detection unit for detecting an on-hook/off-hook state of said handset unit, wherein said personal computer terminal comprises: a sound source interface unit connected to a sound source, said sound source including at least a speaker unit as a sound output unit; a fixed storage device for storing setting data indicative of a sound source for use in making a voice call; and a communication control unit responsive to a ringer tone generating operation command issued by said voice exchanger, said communication control unit determines whether or not a call is in progress from an on-hook/off-hook state detected by said hook switch detection unit, determines from contents stored in said fixed storage device whether or not a speaker unit for a ringer tone generating operation is a same as a speaker unit for a call, and decreases the volume of a ringer tone or mutes the ringer tone when a call is in progress and when the speaker unit for the ringer tone generating operation is the same as the speaker unit for the call.