REPEATER

1. An analog device that amplifies an input signal regardless of its nature, i.e., analog or digital . 2. A digital device that amplifies, reshapes, retimes, or performs a combination of any of these functions on a digital input signal for retransmission. ( 188 ) Note: The term "repeater" originated with telegraphy and referred to an electromechanical device used to regenerate telegraph signals. Use of the term has continued in telephony and data communications .