- dual-tone multi-frequency signal
- Техника: двухтональный многочастотный сигнал
Универсальный англо-русский словарь. Академик.ру. 2011.
dual-tone multi-frequency signal
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Dual-tone multi-frequency — (DTMF) signaling is used for telephone signaling over the line in the voice frequency band to the call switching center. The version of DTMF used for telephone tone dialing is known by the trademarked term Touch Tone (canceled March 13, 1984),… … Wikipedia
Dual-tone multi-frequency signaling — One of the few production telephone DTMF keypads with all 16 keys, from an Autovon Telephone. The column of red keys produces the A, B, C, and D DTMF events. Dual tone multi frequency signaling (DTMF) is used for telecommunication signaling over… … Wikipedia
Dual Tone Multi-Frequency — Codes DTMF Les codes DTMF (dual tone multi frequency) sont les combinaisons de fréquences utilisées pour la téléphonie moderne (en opposition aux téléphones dits à impulsions). Ces codes sont utilisés pour la composition des numéros de téléphones … Wikipédia en Français
Multi-frequency signaling — In telephony, multi frequency signaling (MF) is an outdated, in band signaling technique. Numbers were represented in a two out of five code for transmission from a multi frequency sender, to be received by a multi frequency receiver in a distant … Wikipedia
Multi-frequency receiver — Multi Frequency signalling, (MF), is similar to the European version, CCITT Signaling System 5, (SS5). The original format was five tones used in pairs. This later evolved to six tones. Because its six tones are used only in pairs, this signaling … Wikipedia
Tone — may refer to: MusicTheory* Pitch (music), the perceived frequency of a note or sound (see also pure tone) * Note, the name of a pitch * Whole tone, or major second, a commonly occurring musical interval * Timbre, the quality of a musical note or… … Wikipedia
Frequency-shift keying — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… … Wikipedia
Dial tone — For the G.I. Joe character, see Dial Tone (G.I. Joe). A dial tone (known in the British Isles as a dialling tone)[1] is a telephony signal used to indicate that the telephone exchange is working, has recognized an off hook, and is ready to accept … Wikipedia
Off-hook tone — The off hook tone (also receiver off hook tone or off hook warning) is a telephony signal used to alert a user that the telephone has been left off hook for an extended period, effectively disabling the telephone line. See permanent signal.… … Wikipedia
Reorder tone — The reorder tone, also known as the fast busy tone, is the congestion tone or all trunks busy (ATB) tone of a public switched telephone network. It varies from country to country; in the USA it is a dual frequency tone of 480 Hz and 620 Hz at a… … Wikipedia
