| 摘要 |
PURPOSE:To realize the transmission of one touch dialing, by providing an additional unit having a key switch for one touch dial transmission for a telephone set having an abbreviated dial circuit. CONSTITUTION:A telephone set main body 1 is provided with a push-button dial 11 for an abbreviated dial transmission using a memory 18 itself and a function button 12 for selection and callout between telephone sets and selection and suspension of lines, and an additional unit 2 is provided with a plurality of push- button key switches 22 for one-touch dial operation and a display device 21. A connector 25 of a cable 24 connected to the additional unit is inserted to a support member 3 of the telephone set 1, and when a key switch 22 is operated, a telephone number stored in advance is read out from an area of the memory 18 corresponding to the key position and the dial signal transmission is made to a dial OSC15, allowing to display the number on the display 21 of the additional unit 2 at the same time. |
