Special Features:

Drawing name: modem, stand-alone, 9600 baud; data rates: ccitt v.22bis compatible 2400 bps; ccitt v.22 or bell 212a compatible 1200 bps; bell 103a compatible 300 bps; operation: full duplex over 2 wire, dial-up, leased line; modulation and carrier freq: qam (2400 bps originate 1200 hz answer 2400 hz.); fsk (1200 bps originate 1200 hz. Answer 2400 hz.); fsk (300 bps, originate mark 1270 hz., space 1070hz.; answer mark 2025 hz., space 2025 hz.); line coupling: 600 ohms transformer coupled; transient protected; output levels: permissive (-9 dmb); programmable 0 to -15 dbm); connectors: rs-232 db-25 2-rj11 phone jacks; operating modes: direct (unbuffed), buffered (native), buffered mnp

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.