Returning NU tone to incoming calls

By jtmart
Aug 8, 2009
  1. Hi,
    Could anyone advise me please on how to set up my modem to return NU (number unobtainable, 800 cycles tone) to incoming calls using a normal pstn line (UK)
    My set up is:
    A Dell Dimension desktop pc, using Windows XP pro, with a lucent win modem, on port com3. (It works perfectly.) i.e.

    When someone dials in calling my phone number, which is plugged into the Dell internal modem, I would like the call(s) to be answered with the NU tone, - which I already have on the computer as a wav. file.

    Please could someone advise me on how to set this up please?

    Many thanks. jt
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