| 摘要 |
<p>PURPOSE:To attain ease of four rule calculation during a business talk by providing a call function, a display function of a telephone number of opposite party, a storage function of the telephone number, and the function of four rule calculation to prevent mis-dialing and to simplify the call and display operation. CONSTITUTION:An operation console of a push phone is provided with an opposite party telephone number storage address display section 11, a numeric display section 1 by an opposite telephone number display section 12, a function selecting button 21, and an operating button section 2 comprising a numeric button 22 and a four rule calculation button 23. Further, a function display lamp 31 corresponding to the operating console, a lamp section 3 comprising a group display lamp 32 corresponding to a group call button 24, and a receiver having a receiver call button 4 are provided. Moreover, the push phone is provided with the call function, the display function of the opposite party telephone number, the storage function of the telephone number and the function of four rule calculation, allowing to prevent mis-dialing and to simplify the call and display operation.</p> |
