按键式电话机使用说明书上,一般只给用户介绍怎样储存常用电话号码,却没有提到如何消除已存入的号码,有的只介绍了以新号冲掉旧号的方法。那么,怎样将原储存号码部分或全部清除掉呢? Push-button telephone user manual, generally only to the user how to store frequently used phone numbers, but did not mention how to eliminate the number has been credited, and some only introduced a new number to flush out the old method. So, how to remove some or all of the original storage number?