Data transceiver for transmitting and receiving data and voice signal over telephone line

摘要

A data transceiver having a simple configuration and being capable of reliably transmitting and receiving high-rate data to and from a counterpart transceiver at a remote site far apart from the transceiver over a telephone wire. The transceiver encodes a first data signal from a data equipment into a first encoded data signal to a counterpart transceiver through a telephone wire (50) and receives a second encoded data signal from the counterpart transceiver through the telephone wire (50) to provide a second data signal corresponding to the second encoded data signal to the data equipment. An 8B10B encoder (152) encodes the first data signal in a manner for reducing a magnitude of an accumulated DC component of the first data signal. A packetizer (146) encapsulates the first data signal having an Ethernet format. An equalizer (154) equalizes an encapsulated signal to reduce a magnitude of a transmit level of a second bit of two consecutive data bits of the same logical levels to a reduced level. A medium access controller (142) controls a medium access to facilitate a bidirectional data communication through the telephone wire (50).