In electronic communications, an endec is a device which acts as both an encoder and a decoder on a signal or data stream, either with the same or separate circuitry or algorithm. The combining of these names is a portmanteau.

In electronic communications, an endec is a device which acts as both an encoder and a decoder on a signal or data stream, either with the same or separate circuitry or algorithm. The combining of these names is a portmanteau.