CONTROL SYSTEM FOR MOBILE PUBLIC TELEPHONE

PURPOSE:To realize a mobile public telephone using a key, by adding a signal, which indicates a public telephone, to a call signal in case of a public telephone. CONSTITUTION:In case that a telephone is used as a public telephone, a key 41 is pulled out from a public telephone terminal prt 10. When the key 41 is pulled out, a control part 21 of a mobile machine control part 20 discriminates that the telephone is used as a public telephone. When the connection control is started under this state, the control part 21 adds a signal, which indicates the public telephone, to a call signal and transmits them to a base station through a transmitting part 23. In the exchange side, this telephone is processed as a public telephone. Meanwhile, when the key 41 is inserted to the terminal part 10, the control part 21 transmits the same call signal as a general mobile telephone to the base station through the transmitting part 23. Consequently, this telephone is processed as a general telephone in the exchange side.