|Audio pickup from phone line
||Picks-up audio signal when near a phone that is in use.
|Caller ID and ring generator
||Uses AT90S1200 and generates FSK tones Bell 202 standard for communication and caller id.
|Caller ID with 7-seg display
||DTMF Caller ID, not FSK but DTMF.
||A phone that can only accept calls.
|LED monitor for phone line
||Turns LED ON when phone line is in use.
|LED-blink monitor for phone line
||Blinks LED while phone line is in use.
|Nice telephone ring melody
||Nice telephone ring melody device.
|Phone line in use indicator
||Very simple device with two LEDs as indicators.
|Phone ring generator v1
||Generates voltage across phone line in order for phone to ring. Works on 12V.
|Phone ring generator v2
||Generates voltage across phone line in order for phone to ring. Works on 9V.
|Smart telephone light
||Turns on lights when phone rings and if in dark.
|Telephone answering machine
||Telephone answering machine.
|Telephone audio amplifier
||Amplifies telephone audio signal.
|Telephone exchange with 2 numbers
||Small telephone exchange with 2 numbers.
|Telephone hold with music
||Keeps phone line open and plays audio signal on it.