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    Phone Tone quality

    IT Discussion
    digital phone quality tone
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    • DustinB3403D
      DustinB3403
      last edited by

      I'm drawing a blank on the proper term, but when you call into a teleconference service, and are asked to "enter your passcode" the conference service is listening to the key tones pressed.

      What is that feature called specifically?

      I know poor call quality can cause issues, such as the tones being misheard or completely missed if pressed to rapidly etc.

      Thanks

      1 Reply Last reply Reply Quote 0
      • DanpD
        Danp
        last edited by

        Isn't it DTMF?

        1 Reply Last reply Reply Quote 1
        • DustinB3403D
          DustinB3403
          last edited by

          That looks like it.

          Dual Tone Multiple Frequencies

          Thanks

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          • DanpD
            Danp
            last edited by

            I would have thought the 'D' stood for Dial, not Dual. 😲

            DustinB3403D 1 Reply Last reply Reply Quote 0
            • DustinB3403D
              DustinB3403 @Danp
              last edited by

              @Danp said in Phone Tone quality:

              I would have thought the 'D' stood for Dial, not Dual. 😲

              It's dual because the tones are a combination of two "pure" audio frequencies.

              RojoLocoR 1 Reply Last reply Reply Quote 1
              • RojoLocoR
                RojoLoco @DustinB3403
                last edited by

                @DustinB3403 said in Phone Tone quality:

                @Danp said in Phone Tone quality:

                I would have thought the 'D' stood for Dial, not Dual. 😲

                It's dual because the tones are a combination of two "pure" audio frequencies.

                DTMF tones are fun to play with in an audio editor.

                1 Reply Last reply Reply Quote 0
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