MF / DTMF tone detection with modem

From: Frank Worsley (fworsley_at_shaw.ca)
Date: 05/17/04

  • Next message: George Nelson: "Re: Allocating kernel memory" 
    Date: Mon, 17 May 2004 21:42:28 GMT

    Hi,

    I am wondering if it is possible to use a basic, off the shelf phone modem
    to detect MF / DTMF tones on a phone line.

    I know this is possible using a dedicated telephony card and the Linux
    telephony kernel API.

    If this is possible with a modem, how do I go about doing it? Is there
    some higher level API I can use or do I basically send AT commands to the
    modem?

    Finally, if I have to send AT command strings, is there a standard AT
    command set or do these vary from modem to modem?

    Any information on this would be appreciated. Thank you in advance.

    - Frank

  • Next message: George Nelson: "Re: Allocating kernel memory"

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