Abstract: A telephone reservation-processing system, which comprises:a host computer;a plurality of audio response type computers connected to the host computer through telephone lines and installed in various districts; and at least one terminal unit-controlling computer connected to the host computer through a telephone line, and wherein the host computer includes means for processing data relative to inquiries, reservations and cancellations delivered from the plural audio response type computer, and means for processing data relative to requests for transmission of data supplied from the plural audio response type computer; the plural audio response type computers respectively include means for converting an output signal from the host computer into an audio signal; and the terminal unit-controlling computer includes means for transmitting data delivered from the host computer to the telephone transmission terminal unit.