Special Features:

Triple mode (va3400, 212a, 103) ; built-in microprocessor-no custom lsi; terminal interface transparent to actual mode used; 1 phone number for all asynchronous ports; dial in disciplines unchanged; continuous self test; full user diagnostics analog and digital

Properties:

An item which modulates and demodulates one or more electrical signals. It connects data terminal equipment to a communication line or network such as telephone, radio or telegraph. It may include the multiplexing and demultiplexing circuits, circuit amplifiers and source(s) of carrier frequency. For items designed for light signals, see modem, fiber optic.