Binary Frequency Shift Key - This is a Bosch communication format to report alarms, troubles and other events to Central Station.
*See Notes for more information on BFSK.
More information about BFSK - FSK (Frequency Shift Keying) Formats include: BFSK, VFSK, SIA, Modem.
Definition of FSK:
Frequency-shift keying (FSK) is a method of transmitting digital signals. The two binary states, logic 0 (low) and 1 (high), are each represented by an analog waveform. Logic 0 is represented by a wave at a specific frequency, and logic 1 is represented by a wave at a different frequency. A modem converts the binary data from a computer to FSK for transmission over telephone lines. The modem also converts incoming FSK signals to digital low and high states, which the computer can "understand".