Bit-synchronous operation

Bit synchronous operation is a type of digital communication in which the data circuit terminating equipment (DCE), data terminal equipment (DTE), and transmitting circuits are all operated in bit synchronism with a clock signal.

In bit synchronous operation, clock timing is usually delivered at twice the modulation rate, and one bit is transmitted or received during each clock cycle.

Bit synchronous operation is sometimes erroneously referred to as digital synchronization.