| 摘要 |
<p>A telephone apparatus and a method to operate this telephone apparatus, wherein the telephone apparatus comprises a comparator operable to compare a telephone number included in received caller information of a calling telephone apparatus with a telephone number registered in an electronic telephone directory; and a callback unit operable to call back the calling telephone apparatus, using the telephone number registered in the electronic telephone directory as the telephone number of the calling telephone apparatus when the comparator determines that a predetermined number of digits from the last of the telephone number registered in the electronic telephone directory match with the predetermined number of digits from the last of the telephone number included in the received caller information.</p> |
