Abstract: An example master telephone set constituting a telephone control system includes a status setting unit, a status discrimination unit, an incoming-call detection unit, a notification unit, and a master-set control unit for controlling the operations of the respective units. When, in a state in which the incoming-call detection unit has detected a new incoming call signal from any other line, the status discrimination unit discriminates that one line is in a call holding status, the master-set control unit controls the notification unit so that the pertinent incoming call is notified by, at least, tone information. On the other hand, when the status discrimination unit discriminates, in the same state, that one line is in an on-call status, the master-set control unit controls the notification unit so that the pertinent incoming call is notified by, at least, visible information.

Abstract: A cordless slave apparatus is connected to a host apparatus connected to lines via wireless communications. When the cordless slave apparatus is picked up from a charging apparatus to respond to a call from any of the lines, if the line at which the call has arrived has been selected by the cordless slave apparatus, the line is connected immediately and communications can start. If the line is not selected by the cordless slave apparatus, when a connection instruction from the user is provided, the line is connected and communications can start. When calls have arrived from lines simultaneously, communications can start by capturing a line according to a connection instruction. When a call from another line has arrived during communications, the lines are switched according to a switching instruction from the user and the line through which the communications have been performed is automatically turned to be on hold.

Abstract: A cordless slave apparatus is connected to a host apparatus connected to lines via wireless communications. When the cordless slave apparatus is picked up from a charging apparatus to respond to a call from any of the lines, if the line at which the call has arrived has been selected by the cordless slave apparatus, the line is connected immediately and communications can start. If the line is not selected by the cordless slave apparatus, when a connection instruction from the user is provided, the line is connected and communications can start. When calls have arrived from lines simultaneously, communications can start by capturing a line according to a connection instruction. When a call from another line has arrived during communications, the lines are switched according to a switching instruction from the user and the line through which the communications have been performed is automatically turned to be on hold.

Abstract: A cordless slave apparatus is connected to a host apparatus connected to lines via wireless communications. When the cordless slave apparatus is picked up from a charging apparatus to respond to a call from any of the lines, if the line at which the call has arrived has been selected by the cordless slave apparatus, the line is connected immediately and communications can start. If the line is not selected by the cordless slave apparatus, when a connection instruction from the user is provided, the line is connected and communications can start. When calls have arrived from lines simultaneously, communications can start by capturing a line according to a connection instruction. When a call from another line has arrived during communications, the lines are switched according to a switching instruction from the user and the line through which the communications have been performed is automatically turned to be on hold.

Abstract: When a telephone apparatus makes a particular and emergency call using a telephone communication line and another telephone apparatus is already performing communications using the telephone communication line, then the control apparatus controls refers to a particular/emergency number table stored in a storage device and disconnects the communications that are currently being performed to transmit signals for the particular and emergency call. The control apparatus disconnects the communications and also reconnects the disconnected communications using an Internet communication line by referring to a line use status table stored in the storage device. At the time of the disconnection, an announcement that the communications are to be disconnected is also made beforehand to the telephone apparatus the communications over which are to be disconnected.

Abstract: A master telephone set constituting a telephone control system includes status setting unit, status discrimination unit, incoming-call detection unit and notification unit, and master-set control unit for controlling the operations of the respective unit. When, in a state where the incoming-call detection unit has detected a new incoming call signal from any other line, it has been discriminated by the status discrimination unit that one line is in a talk holding status, the master-set control unit controls the notification unit so that the pertinent incoming call is notified by, at least, tone information. On the other hand, when it has been discriminated by the status discrimination unit in the same state that one line is in a talking status, the master-set control unit controls the notification unit so that the pertinent incoming call is notified by, at least, visible information.

Abstract: A cordless slave apparatus is connected to a host apparatus connected to lines via wireless communications. When the cordless slave apparatus is picked up from a charging apparatus to respond to a call from any of the lines, if the line at which the call has arrived has been selected by the cordless slave apparatus, the line is connected immediately and communications can start. If the line is not selected by the cordless slave apparatus, when a connection instruction from the user is provided, the line is connected and communications can start. When calls have arrived from lines simultaneously, communications can start by capturing a line according to a connection instruction. When a call from another line has arrived during communications, the lines are switched according to a switching instruction from the user and the line through which the communications have been performed is automatically turned to be on hold.

Abstract: When a telephone apparatus makes a particular and emergency call using a telephone communication line and another telephone apparatus is already performing communications using the telephone communication line, then the control apparatus controls refers to a particular/emergency number table stored in a storage device and disconnects the communications that are currently being performed to transmit signals for the particular and emergency call. The control apparatus disconnects the communications and also reconnects the disconnected communications using an Internet communication line by referring to a line use status table stored in the storage device. At the time of the disconnection, an announcement that the communications are to be disconnected is also made beforehand to the telephone apparatus the communications over which are to be disconnected.

Abstract: An object of the present invention is to provide communication methods, communication devices, and communication terminals that are capable of improving the quality of recorded voice in a case where sound information is communicated over the Internet. A delay packet that is delayed within the Internet is discarded and not reproduced, and in place of the lost voice packet, a supplementary packet is created using data extrapolated from the packets before and after it, and is reproduced. The packet that is not reproduced is stored in the record buffer of a storage device along with the other packets, and when reproducing voice after reception is complete, such as in the case of reproducing recorded voice, all received packets are arranged in a predetermined order based on their detected sequence number and reproduced.