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Saving telephone conversations on PC.

Discussion in 'Electronic Design' started by valentin tihomirov, Feb 5, 2004.

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  1. The goal is to listen several telephone lines and record conversations. The
    basic components would be

    Line -> DAA -> ADC -> TCP/IP/Ethernet -> PC.

    I would like to know whether there are better solutions; may be the
    recorders are already existing with PC interface. The most complex thing I
    feel is PC interfacing. May be it is better to use USB or something else
    instead of Ethernet. I'm sure that USB has a special class (thus drivers for
    major platforms) for telephony but not sure in success.

    Very much thank you for any advice.
  2. I have 2 sound cards, recording 2 stereo channels at the time is possible,
    so plug 4 mono in the back of the PC, I take from voice modem for example,
    or little transformer with cap on phone line.
    So much simpler, in Linux more soundcards should be possible,
    also I have not tried but the Creative SB live I use has more then one
    /dev/dsp in use, so perhaps recording 4 mono channels or more with one card
    is also possible.
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