full-duplex definition communications
(fdx, from telegraphy
) 1. A type of duplex
communications channel which carries data in both directions at once.
On purely digital
connections, full-duplex communication requires two pairs of wires. On analog
networks or in digital networks using carriers, it is achieved by dividing the bandwidth
of the line into two frequencies, one for sending, and the other for receiving.
2. An obsolete term for remote echo