DC SUPERPOSITION LAN SYSTEM

PROBLEM TO BE SOLVED: To provide a DC superposition LAN system that supplies operating power required for a communication device without wiring another power line while reducing the length of a power line to supply power to another apparatus. SOLUTION: The DC superposition LAN system includes: a communication apparatus 3 for transmitting/receiving IP signals between the communication apparatus and a network NT; a LAN outlet 4 including a connection part to which a LAN cable 14 from the communication apparatus 3 is connected, and an outlet port to which the LAN cable from a communication device is connected so as to be freely insertable/extractable thereto/therefrom; and a DC power superposition part 53 that superposes DC power supplied from a cooperative control part 13 via a power line 15 on the LAN cable 14. The LAN outlet 4 is connected with the LAN cable 14 on which the DC power is superposed. COPYRIGHT: (C)2010,JPO&INPIT