APPARATUS AND SYSTEM FOR TRANSMITTING VOICE SIGNAL WITH DATA(ETHERNET ETC) SIGNAL USING A CABLE

摘要

An apparatus and a system for simultaneously transmitting voice and data signals are provided to remarkably reduce construction expenses for extension by simultaneously transmitting a telephone signal and an Ethernet LAN signal through an Ethernet cable or a CPEV cable, and improve operational efficiency of a network construction. A telephone line connected through an RJ-11 passes through a lightning protection unit. A telephone signal which has passed through the lightning protection unit is separated into four lines while passing through a 2 line/4 line hybrid circuit(1). A DC signal inputted through the telephone line is transferred to a transmission impedance matching transformer(4). The telephone signal is transferred to bridge tap attenuators(2,3) and impedance is matched. After passing through the bridge tap attenuators(2,3), the telephone signals are connected with a transmission impedance matching transformer(4) and a reception impedance matching transformer(5), respectively. The impedance matching transformers(4,5) combine an Ethernet signal and the telephone signals. The transmission and reception impedance matching transformers(4,5) are connected with extensions so as to transmit/receive the telephone signal and the Ethernet signal through a 4-line UTP cable or CPEV cable.