| 摘要 |
<p>This invention relates to a communication line control device and more particulary, but not exclusively, to a communication line control device to control the use of a telephone line. The communication line control device consists of an electronic circuit including a communication line controller for selectively enabling or disabling the use of a communication line. An input means receives input instructions relating to the limitations of use of at least one user of the communication line and a computing means controls the communication line controller in accordance with the input instructions.</p> |
