- Jul 22, 2017 -
A receives a single order
A to B when the same time can also be received B sent to the signal called duplex
A received B and B received A hair can be, but can not be called half-duplex at the same time
On the walkie-talkie, the general conventional walkie-talkie are half-duplex work, walkie-talkie relay station [station] is duplex work.
The most common duplex mode machine is the phone.