Abstract: A telephone apparatus connectable to a computer network through a telephone network to transmit data including audio signals via a server of said computer network includes: a first telephone set including a first audio input/output means for converting input voice into a digital audio signal and for converting a digital audio signal into output voice, and a first CPU that executes process for connecting the first telephone set to the server and process for compressing or expanding the digital audio signal; a second telephone set including a second audio input/output means for converting input voice into a digital audio signal and for converting a digital audio signal into output voice, and a second CPU that executes process for connecting the first telephone set to the server and process for compressing or expanding the digital audio signal; and connection control means connected between the telephone network and the first and second CPUs to enable the first and second CPUs to transmit the data.

Abstract: A telephone apparatus of a telephone system, including at least one server for connecting a plurality of telephone apparatuses connected to a computer network, comprises: a communication circuit means for processing data to and from said computer network; an audio input means for generating a digital audio signal from input voice; an audio compression means for compressing the audio signal from the audio input means and for supplying the compressed audio signal to the communication circuit means; and a control means for determining a compression rate of the audio compression means in response to information on the ratio of use of the computer network obtained from the server.

Abstract: A telephone system including telephone terminals in computer networks connected via servers to transmit data containing at least audio data through the Internet. Upon receipt of information on a source terminal sent via a server, a destination terminal performs operations based on the information. For example, the destination terminal judges whether the source terminal is a previously specified terminal, and connects or does not connect itself to the source terminal in accordance with the judgement.

Abstract: A telephone system using terminals in computer network connected via servers to transmit data containing at least audio data through the computer networks. A server is provided with a data base storing call-out information used to connect to a destination terminal. When a source terminal makes a call to a destination terminal, the server of the computer network searches out the connection address of the destination terminal from the data base. Then, the server calls up the destination terminal and establishes connection between the server of the computer network and the destination terminal.

Abstract: A server is used in a computer network telephone system having a computer network that can connect a plurality of terminal devices via at least one server to transmit data containing audio data between the terminal devices. The server provides predetermined services for the terminals when it receives predetermined information from the terminals.