Patent ID: 6904134

Claim:
A network infrastructure integrated system comprising: a telephone line network to which a first plurality of home information machines are respectively each connected via a PNA modem; a power line network to which a second plurality of home information machines are respectively each connected via a PNA modem having a couvler; a gateway system connected with one of the telephone line network and the power line network for converting communication protocols of the telephone line network or power line network and an external network and transferring data signals between the telephone line network or power line network and the external network; and a network bridge connected between the telephone line network and the power line network for enabling the first and second pluralities of home information machines to communicate data signals with each other between the telephone line network and the power line networks; wherein the network bridge includes an input protection means for protecting internal circuitry thereof and removing unwanted electric components of the data signal flowing between the telephone line network and the power line network, and matching means connected to the input means for matching the data signal to an impedance value of the PNA modem between the telephone line network and the power line network.