| 摘要 |
Disclosed is a link backup method. The method comprises: monitoring whether a power over Ethernet (POE) transmission link between two devices is normal; in the case where it is monitored that the POE transmission link is abnormal, switching the POE transmission link to a broadband over power lines (BPL) link; and transmitting data between the two devices through the BPL link. Also disclosed at the same time are a power source backup method, a link and power source backup method, a link backup device, a power source backup device, and a link and power source backup system. |
