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- Dual-tone_multi-frequency_signaling abstract "Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signaling over analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center. The version of DTMF that is used in push-button telephones for tone dialing is known as Touch-Tone. It was developed by Western Electric and first used by the Bell System in commerce, using that name as a registered trademark. DTMF is standardized by ITU-T Recommendation Q.23. It is also known in the UK as MF4.Other multi-frequency systems are used for internal signaling within the telephone network.Introduced by AT&T in 1963, the Touch-Tone system using the telephone keypad gradually replaced the use of rotary dial and has become the industry standard for landline service.".
- Dual-tone_multi-frequency_signaling thumbnail 66a3aDTMFpad.jpg?width=300.
- Dual-tone_multi-frequency_signaling wikiPageExternalLink Doc?docid=accnfh3pfb3_205hfvzk5rs.
- Dual-tone_multi-frequency_signaling wikiPageExternalLink dtmf.html.
- Dual-tone_multi-frequency_signaling wikiPageExternalLink bstj39-1-235.pdf.
- Dual-tone_multi-frequency_signaling wikiPageExternalLink en.
- Dual-tone_multi-frequency_signaling wikiPageExternalLink en.
- Dual-tone_multi-frequency_signaling wikiPageExternalLink en.
- Dual-tone_multi-frequency_signaling wikiPageID "8488".
- Dual-tone_multi-frequency_signaling wikiPageRevisionID "605223969".
- Dual-tone_multi-frequency_signaling description "How DTMF dialing sounds.".
- Dual-tone_multi-frequency_signaling filename "DTMF dialing.ogg".
- Dual-tone_multi-frequency_signaling format Ogg.
- Dual-tone_multi-frequency_signaling hasPhotoCollection Dual-tone_multi-frequency_signaling.
- Dual-tone_multi-frequency_signaling title "DTMF dialing".
- Dual-tone_multi-frequency_signaling subject Category:Broadcast_engineering.
- Dual-tone_multi-frequency_signaling subject Category:Telephony_signals.
- Dual-tone_multi-frequency_signaling type Abstraction100002137.
- Dual-tone_multi-frequency_signaling type Communication100033020.
- Dual-tone_multi-frequency_signaling type Signal106791372.
- Dual-tone_multi-frequency_signaling type TelephonySignals.
- Dual-tone_multi-frequency_signaling comment "Dual-tone multi-frequency signaling (DTMF) is used for telecommunication signaling over analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center. The version of DTMF that is used in push-button telephones for tone dialing is known as Touch-Tone. It was developed by Western Electric and first used by the Bell System in commerce, using that name as a registered trademark.".
- Dual-tone_multi-frequency_signaling label "Code DTMF".
- Dual-tone_multi-frequency_signaling label "DTMF".
- Dual-tone_multi-frequency_signaling label "DTMF".
- Dual-tone_multi-frequency_signaling label "DTMF".
- Dual-tone_multi-frequency_signaling label "DTMF".
- Dual-tone_multi-frequency_signaling label "DTMF".
- Dual-tone_multi-frequency_signaling label "Dual-tone multi-frequency signaling".
- Dual-tone_multi-frequency_signaling label "Dual-tone multi-frequency".
- Dual-tone_multi-frequency_signaling label "Marcación por tonos".
- Dual-tone_multi-frequency_signaling label "Mehrfrequenzwahlverfahren".
- Dual-tone_multi-frequency_signaling label "双音多频".
- Dual-tone_multi-frequency_signaling sameAs Tónová_volba.
- Dual-tone_multi-frequency_signaling sameAs Mehrfrequenzwahlverfahren.
- Dual-tone_multi-frequency_signaling sameAs Marcación_por_tonos.
- Dual-tone_multi-frequency_signaling sameAs DTMF.
- Dual-tone_multi-frequency_signaling sameAs Code_DTMF.
- Dual-tone_multi-frequency_signaling sameAs Dual-tone_multi-frequency.
- Dual-tone_multi-frequency_signaling sameAs DTMF.
- Dual-tone_multi-frequency_signaling sameAs DTMF.
- Dual-tone_multi-frequency_signaling sameAs DTMF.
- Dual-tone_multi-frequency_signaling sameAs DTMF.
- Dual-tone_multi-frequency_signaling sameAs m.02c8p.
- Dual-tone_multi-frequency_signaling sameAs Q941685.
- Dual-tone_multi-frequency_signaling sameAs Q941685.
- Dual-tone_multi-frequency_signaling sameAs Dual-tone_multi-frequency_signaling.
- Dual-tone_multi-frequency_signaling wasDerivedFrom Dual-tone_multi-frequency_signaling?oldid=605223969.
- Dual-tone_multi-frequency_signaling depiction 66a3aDTMFpad.jpg.
- Dual-tone_multi-frequency_signaling isPrimaryTopicOf Dual-tone_multi-frequency_signaling.