Simplex and Duplex

Simplex & Duplex
Simplex: Data transmission only can be transmitted in one direction.
Duplex: Data transmission can be transmitted in both directions. It is more convenient than simplex.
The terms of simplex and duplex could be found in the a wide range SOPTO products, such as simplex patch cords and duplex patch cords, simplex adaptors and duplex adaptors etc.