Special Features:

Medium speed; built-in multiplexer; secondary channels; international basic point-to-point/multipoint ptt; status indicators include good data, carrier loss, transmitted data, received data, request to send, clear to send, data set ready, data terminal ready

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.