| 摘要 |
PURPOSE: A hub system is provided to supply power to the hub, for an Internet protocol(IP) telephone set to be supplied the power without an additional adapter. CONSTITUTION: A hub system, transceiving data through many ports connected to many internet protocol(IP) telephone sets and a local area network(LAN) line, comprises a hub power supplier(31) and an IP telephone set power supplier(40). The hub power supplier(31) supplies power to the hub, and supplies the power to the many IP telephone sets through the many ports by using a power line. And, the IP telephone set power supplier(40), respectively built in the many IP telephone sets, supplies power to a self-IP telephone set when power supply is suspended from the hub power supplier, or extracts power from the hub power supplier to supply to the IP telephone sets.
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