Modem

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Thread: Modem

  1. - 25th October 2006, 14:25 #1
    mychangl's Avatar
    mychangl
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    Question Modem

    How can i instruct PIC to dial a modem ? Can anyone help ?

    Thx
  2. - 25th October 2006, 14:48 #2
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    You need to tell us much details. At least wich modem model
    Steve

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  3. - 26th October 2006, 14:45 #3
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    I have Aztech 56k modem model EM6800-U. serial port. Year 2000.

    i tried sending ASCII ( modem command such as "atdt 56306574" ) through serout command but modem just doesn't respond. The modem not even dial the number.
  4. - 26th October 2006, 16:30 #4
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    I haven't dealt much with modems but have done a fair amount of serial interfaces. It might be that you need to utilize some of the control lines like RTS/DTS.
  5. - 27th October 2006, 11:58 #5
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    Check this page for the concept.

    http://www.easyvitools.com/articles/...onedialer.html


    I believe you can get the idea from there.


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  6. - 27th October 2006, 15:21 #6
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    checked the modem ctrl line, nothing wrong with the signal.
    can it be the modem need special code other than AT command ?
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