Power-line communication system to supply power and data to integrated services digital network (ISDN) subscriber terminal and control method thereof

Abstract

A power-line communication system and control method to supply power and data to an Integrated Service Digital Network (ISDN) subscriber terminal includes: a subscriber terminal adapted to transmit a response message upon a connection request message being received; and a power supply switch adapted to transmit the connection request message to the subscriber terminal, and to supply power together with data to the subscriber terminal upon the response message to the connection request message being received from the subscriber terminal. The power supply switch is adapted to cut off the power supplied to the subscriber terminal upon the response message to the connection request message not being received from the subscriber terminal.

Dependencies are inferred from the claim text.