| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a network concentrator and power control method capable of achieving power saving in the event of power failure or the like with a simpler configuration than before. <P>SOLUTION: In the event of power failure in a main power supply, a communication path 500 is set between a first and a second ports X-Y in a physical layer, supply of auxiliary power is received, and a supply destination of the auxiliary power is limited to the first port X and the second port Y, and a processing section 112 of the physical layer involved in the communication path 500. <P>COPYRIGHT: (C)2012,JPO&INPIT |
