| 摘要 |
PURPOSE:To eliminate an unnecessary part in a constitution by providing a controller using a telephone system in common to a subscriber's set and a radio transmission/reception circuit. CONSTITUTION:A handset 6 consists of a microphone, a speaker and a dial switch inputting a dial number. The control means of the telephone system 1 changes over connectors 2, 3 via a changeover switch by the input of a selection instruction switch 65 to connect the telephone system 1 to a telephone line 4 or a radio transmission/reception circuit 5. Thus, the telephone system 1 and the handset 6 are used in common for the radio transmission/reception circuit for a subscriber's set or an automobile telephone set. Thus, the unnecessary part in the constitution is eliminated. |
