Results tagged #Music On Hold in Circuits
Music On Hold Box Circuit
Ul, an LS3404 melody chip is activated when hold SI is pressed, which causes SCR1 to conduct and hold the telephone line via Tl, Rl, and LE...
Music on hold
With this music-on-hold device, you can answer the phone in one room, place the caller on hold, and then pick up the phone again at another ...