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AssigneeSumitomo Electric Industries, Ltd.
InventorYuta NOMURA
Estimating the term…
The present invention discloses an upper device connected to an opposing device by a communication line which is a carrier signal transmission line. The upper device includes one or a plurality of transceivers that mutually convert a carrier signal and an electrical signal; a line concentrator that has a first port for an upper network, a second port for the transceiver, and a third port for management communication, and sets a communication path between the ports; and a control unit for management communication connected to the third port. When there is no response message from the opposing device within a predetermined period of time after the control unit inputs a management frame destined for the opposing device and including control information for the opposing device, to the third port, the control unit reinputs the management frame to the third port.
An upper device connected to an opposing device by a communication line, the communication line being a carrier signal transmission line, the upper device comprising:
An opposing device connected to an upper device by a communication line, the communication line being a carrier signal transmission line, the opposing device comprising:
A communication system comprising:
A communication method for a communication system having an upper device including a line concentrator linked to an upper network;
Dependencies are inferred from the claim text.