In telephony, multi-frequency signaling (MF) is a type of signaling that was introduced by the Bell System after World War II. It uses a combination of...

Dual-tone multi-frequency (DTMF) signaling is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone...

acknowledged before the next signal can be sent. Most forms of R2 register signaling are compelled, while R1 multi-frequency signaling is not. The term is only...

Multi-Frequency signalling, (MF), is similar to the European version, CCITT Signaling System 5, (SS5). The original format was five tones used in pairs...

dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States...

prohibit D.C. loop-disconnect signaling, such as rotary dial pulses, and on-hook/off-hook signaling. Common frequencies for this purpose were 1600Hz,...

and transmitted across the telephone line in form of dual-tone multi-frequency signaling (DTMF). The tones control the telephone system by instructing...

and dual-tone multi-frequency signaling (DTMF) BORSCHT functions: battery feed (B), over-voltage protection (O), ringing (R), signaling (S), coding (C)...

System No. 2. R2 signaling methods may be logically divided into two protocol groups. The line signaling group comprises supervisory signals for call setup...

for quite elaborate voice box systems, navigated via dual-tone multi-frequency signaling, allowing a computer on a (single) telephony line to sound like...

Frequency-shift keying (FSK) Audio frequency-shift keying (AFSK) Multi-frequency shift keying (M-ary FSK or MFSK) Dual-tone multi-frequency signaling...

In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital...

A signal generator is one of a class of electronic devices that generates electrical signals with set properties of amplitude, frequency, and wave shape...

certain practical applications, such as recognition of dual-tone multi-frequency signaling (DTMF) tones produced by the push buttons of the keypad of a traditional...

The international standard for digit signaling by telephones specifies dual-tone multi-frequency (DTMF) signaling, more commonly known as touch-tone dialing...

function by a stutter dial tone. Musical tone Dual-tone multi-frequency signaling (DTMF) Signaling (telecommunications) V. S. Bagad and I. A. Dhotre (2009)...

line or service Dial peer Dial tone Distribution frame Dual-tone multi-frequency signaling (DTMF) Emergency telephone number End instrument Engset calculation...

single-frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel...

its frequency with a modulator. The (instantaneous) frequency of an oscillator is altered in accordance with the amplitude of a modulating signal. FM...

address signaling, including multi-frequency signaling methods, enabled direct-dialed long-distance calls by subscribers, culminating in the Signalling System...

Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is encoded on a carrier signal by periodically shifting the...

Journal published an article entitled "In-Band Single-Frequency Signaling", which described the signaling scheme used for starting and ending telephone calls...

using modified discrete cosine transform (MDCT) coding. Dual-tone multi-frequency signaling (DTMF), fax transmissions, and high-quality audio cannot be transported...

signaling systems such as Common Channel Interoffice Signaling and later Signaling System #7 obviated the need to monitor multi-frequency signaling as...

also been implemented for fast detection of the DTMF frequencies (dual-tone multi-frequency signaling) in the form of C library - libmusic (including for...

The Signaling System No. 5 (SS5) is a multi-frequency (MF) telephone signaling system that was in use from the 1970s for International Direct Distance...

continuous-phase frequency-shift keying used in dual-tone multi-frequency signaling and early modem tones. A typical function generator can provide frequencies up to...

brand owned by Associated British Foods Dual-tone multi-frequency signaling, a telecommunication signaling system, also known as "Touch-Tone" All pages with...

In mathematics and signal processing, an analytic signal is a complex-valued function that has no negative frequency components.  The real and imaginary...

signals or a series of binary numbers for digital signals. Audio signals have frequencies in the audio frequency range of roughly 20 to 20,000 Hz, which corresponds...