Special Features:

Tech char: bell 103/113 compatible; ccitt v.21 compatible; 300 baud; hdx/fdx; rs-422/232c interface; operating power rqmts: ac, 115/230 volts, 47-450 hz, single phase; rack mounted; 2 or 4 wire, full duplex at 300 baud or half duplex at 1200 baud; interfaces an rs-232 or rs-422 data port with a two-wire fsk data port; allows multiple transmitting set control by a single remote control unit using telephone lines

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.