| 摘要 |
<p>Both a telephone and a high rate (10Mbps) data communication are amplified, equalized, mixed, divided and switched to get a long distance transmissibility. A central control unit (31) of a ISP's hub (332) and, a subscriber device (32) connected to a subscriber's PC (342) are connected with each other through an indoor extension (35) or a pair of copper wires for telephone. A transmitter (311 or 321) for transmitting a signal through indoor extensions, and a receiver (312 or 322) for receiving through an indoor extension, respectively. A switching controller (317 or 327) is provided to switch on or off in alteration the switch (315 or 325) of the transmitter (311 or 321) and, the switch (316 or 326) of the receiver (312 or 322) so that a transmission signal is not to be interfered with a reception signal when passing through the indoor extension (35) of the PSTN. A mixer (318 or 328) for mixing a voice signal and a data signal with each other to transmit through the indoor extension (35) and, a divider (319 or 329) for dividing a mixed signal received through the indoor extension (35) into a voice signal and a data signal, respectively.</p> |
