| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a terminal adapted to be powered locally and to receive a remote power feed via a link connecting it to a local area network. SOLUTION: This terminal includes a local power supply, which can be backed up by the remote power feed, and an identification module connected to at least two conductors of the link. The identification module enables remote detection that the terminal can receive the remote power feed. The terminal further includes a circuit for drawing a predetermined remote power feed current and which is activated when the local power supply is working normally and disabled if the local power supply is not working normally and if the remote power feed is not applied to the link. Applications include telephone terminals using the Internet protocol.</p> |
