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Cadence/Tone Telephone in Mexico?

Discussion in 'Electronic Basics' started by Roque, Nov 8, 2004.

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  1. Roque

    Roque Guest

    I am looking for cadence of tones in telephonic lines in Mexico, line
    busy, dial tone, ...

    Thanks.
    Sorry for my English.

    Roque.
     
  2. Dmitri

    Dmitri Guest

    Roque wrote:

    Did you mean DTMF (dual tone multi frequency) touch tones? I would assume
    they are the same in Mexico as they are in US since the system has been in
    use since 1960s. Here is a nice read on the subject:
    http://www.fact-index.com/d/du/dual_tone_multi_frequency.html
    You could also post in another newsgroup, comp.dcom.telecom.tech to see if
    someone from Mexico can actually 100% confirm that.


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  3. Roque

    Roque Guest


    Thanks but it is not exactly the information than I looking for. I'm
    looking for solved questions which, frecuency of dial tone, busy tone
    (ex. tuu-tuu-tuu)...

    Roque
     
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