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 ...

In the early 1960s, AT&T introduced a method of providing in-band signaling so telephone customers could place telephone calls. The system was called dual-tone multi-frequency, or DTMF. AT&T, through ...

Two critical elements of traditional telephony will have to be supported in the new voice-on-the-Web technology. I was at a conference without my cell phone, and I wanted to access my voice mail ...

The DTMF extension project is intended to detect DTMF tones and decodes them to binary digits that can be easily read by a microcontroller which can decide what jobs to perform. The DTMF extension ...

Though many of us will never have experimented with it, most readers should be familiar with DTMF as the tones used by the telephone system for dialling. If your youth was not misspent mashing 4-4-2-6 ...

Sometimes you start building, and the project evolves. Layers upon layers of functionality accrue, accrete, and otherwise just pile up. Or at least we’re guessing that’s what happened with [Varun ...

Just got a new Galaxy S5. So far I'm loving the phone, with one fairly major annoyance - what the hell were they thinking when they used some bubble sound for the keypad tones? Is there any way to get ...

Check out this fun robot, which is controlled by a T-Mobile Android G1 cell phone. It certainly looks fun; have a look at the video below. This fun robot is controlled by the headphone adapter on the ...