| 摘要 |
PROBLEM TO BE SOLVED: To decide whether a call tariff for a currently used line is expensive or not by having a radio part for every radio carrier, having a different incoming call sound in accordance with a kind of this received radio carrier ring when a calling from another party terminal is received and displaying this kind at a display part. SOLUTION: When communication is performed through one of radio parts 1 to n from another party terminal, display or an incoming call of a radio carrier the other party terminal uses is made to ring. On the basis of the incoming call sound, the receiver is picked up and responded. When responded, a buzzer sound for deciding the kind of the radio carrier the other party terminal uses is made to ring. On the other hand, when transmission is performed from a reception terminal to the other terminal, the radio carrier being used is displayed and, at the same time, a transmission sound is made to ring. When the other terminal picks up the receiver and responds on the basis of the transmission sound, the kind of the currently used radio carrier is informed to the other terminal.
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