| 摘要 |
<p>An apparatus for selectively allowing calls to a device, especially a facsimile machine, that may receive calls on a signal line. The apparatus detects an incoming call on the signal line and allows the incoming call to reach the device if received during an enabled time period but prevents the incoming call from reaching the device if received outside the enabled time period. The apparatus may be configured to prevent a first incoming call, detected outside said enabled period, from reaching said device and subsequently to initiate said enabled time period.</p> |
