As we all very well known that DTMF refers to Dual Tone Multi-Frequency Signaling. This DTMF is used for telecommunication signaling over analog telephone lines. Here I am listing out some of the best ...

DTMF (Dual Tone Multi Frequency) is a signaling system for identifying the keys or better say the number dialed on a pushbutton or DTMF keypad. DTMF (Dual Tone Multi Frequency) is a signaling system ...