| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system capable of reducing the deterioration of communication voice quality.SOLUTION: The communication system includes a mobile telephone terminal, having a public line communication function, and a mobile communication terminal which is an extension terminal connected to an extension network in a predetermined premise through a private branch exchange. The mobile telephone terminal is communicable with the mobile communication terminal by short-range radio communication by mutually identifying an opposite connection party to be associated with each other. Through the short-range radio communication, the mobile telephone terminal originates a call to the extension network or a public network through relay connection means provided in the associated mobile communication terminal, to perform communication. Also, the mobile telephone terminal includes premise connection means for accepting an incoming call from the private branch exchange to the associated mobile communication terminal through the relay connection means of the mobile communication terminal, to perform communication. |
