Telephone terminal, call system and terminal control program

A call system comprising:

• an Internet connection unit for connecting a line to another party's Internet terminal as an Internet terminal on the other end of the line through an Internet network;
• an Internet terminal for inputting/outputting audio signals transmitted from the other party's Internet terminal connected by the Internet connection unit through the Internet network;
• and
• a telephone terminal connected to the Internet terminal through an audio transmission path capable of transmitting audio signals,
• wherein the Internet terminal inputs/outputs audio signals from/to the telephone terminal and makes audio based on the audio signals input/output from a transmitter/receiver provided in the telephone terminal thereby to perform a voice call, and
• wherein the telephone terminal is provided with a telephone connection unit for connecting a line to the other party's telephone terminal as a telephone terminal on the other end of the line through a telephone line network, for performing a voice call with the other party's telephone terminal through the telephone line network, the telephone terminal including:
• an audio input/output unit provided in addition to the telephone connection unit and capable of inputting/outputting audio signals;
• a switch unit for switching an output destination of audio signals based on audio input from the transmitter/receiver and an input source of audio signals to be output as audio from the transmitter/receiver between the telephone line network and the audio input/output unit according to an operation of a user;
• and
• a control unit for disconnecting the line to the other party's telephone terminal through the telephone line network when a predetermined disconnection condition is satisfied in a state in which the line to the other party's telephone terminal is connected by the connection unit and the output destination and input source of audio signals are switched to the audio input/output unit by the switch unit.

A telephone terminal provided with a telephone connection unit for connecting a line to another party's telephone terminal as a telephone terminal on the other end of the line through a telephone line network, for performing a voice call with the other party's telephone terminal through the telephone line network, and with an Internet connection unit for connecting a line to the other party's Internet terminal as an Internet terminal on the other end of the line through an Internet network for performing a voice call with the other party's Internet terminal through the Internet network, the telephone terminal comprising:

• a switch unit for switching an output destination of audio signals based on audio input from a transmitter/receiver and an input source of audio signals to be output as audio from the transmitter/receiver between the telephone line network and the Internet network according to an operation of a user;
• and
• a control unit for disconnecting the line to the other party's telephone terminal through the telephone line network when a predetermined disconnection condition is satisfied in a state in which the line to the other party's telephone terminal is connected by the connection unit, the line to the other party's Internet terminal is connected by the Internet connection unit, and the output destination and input source of audio signals are switched to the Internet network by the switch unit.

A computer readable storage medium storing a computer executable terminal control program to make a computer system execute a variety of processes for controlling a telephone terminal that performs a voice call with the other party's telephone terminal through a telephone line network, the terminal control program including:

• a telephone connection process for connecting the line to the other party's telephone terminal through the telephone line network;
• a switch process for switching an output destination of audio signals based on audio input from a transmitter/receiver and an input source of audio signals to be output as audio from the transmitter/receiver between the telephone line network and an audio input/output unit for inputting/outputting audio signals according to an operation by a user;
• and
• a disconnection process for disconnecting the line to the other party's telephone terminal through the telephone line network when a predetermined disconnection condition is satisfied in a state in which the line to the other party's telephone terminal is connected in the telephone connection process, and the output destination and input source of audio signals are switched to the audio input/output unit in the switch process.

A computer readable storage medium for storing a computer executable terminal control program to make a computer system execute a variety of processes for controlling a telephone terminal that performs a voice call with the other party's telephone terminal through a telephone line network and performs a voice call with the other party's Internet terminal through an Internet network, the terminal control program including:

• a telephone connection process for connecting the line to the other party's telephone terminal through the telephone line network;
• an Internet connection process for connecting the line to the other party's Internet terminal through the Internet network;
• a switch process to switch an output destination of audio signals based on audio input from a transmitter/receiver and an input source of audio signals to be output as audio from the transmitter/receiver between the telephone line network and the Internet network according to an operation of a user;
• and
• a disconnection process for disconnecting the line to the other party's telephone terminal through the telephone line network when a predetermined disconnection condition is satisfied in a state in which the line to the other party's telephone terminal is connected in the telephone connection process, the line to the other party's Internet terminal in the Internet connection process, and the output destination and input source of audio signals are switched to the Internet network in the switch process.