One late night many decades ago, I chanced upon a technical description of the Touch-Tone system. The book I was reading had an explanation of how each key on a telephone sends a combination of two ...

While many of us have banished land line telephones from our houses, there are still quite a few people who utilize POTS lines today. These analog phone systems use Dual Tone Multi Frequency (DTMF) ...

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 ...

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 ...

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 ...

DTMF digits are also used to specialized functions like voice mail login, automated attendant (AA), and interactive voice response (IVR) systems. DTMF digits are frequency combinations that enable ...

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 ...