full-duplex


full-duplex

(communications)(fdx, from telegraphy) 1. A type ofduplex communications channel which carries data in bothdirections at once.

On purely digital connections, full-duplex communicationrequires two pairs of wires. On analog networks or indigital networks using carriers, it is achieved by dividingthe bandwidth of the line into two frequencies, one forsending, and the other for receiving.

2. An obsolete term for remote echo.

Compare simplex, half-duplex, double-duplex.

full-duplex

Capable of transmitting and receiving over the same channel simultaneously. In pure digital networks, this is achieved with two pairs of wires. In analog networks or in digital networks using carriers, it is achieved by dividing the bandwidth of the line into two frequencies, one for sending, the other for receiving.