companies make their calls with a machine called a predictive dialer.
Predictive dialers use a computer database to keep from wasting
time calling disconnected numbers. Disconnected numbers always answer
with a SIT tone followed by a recording explaining why the number
is not available. When the Predictive Dialer hears the SIT tone
it hangs up immediately (it doesn't wait for the recording to play)
and flags that number in the software as a disconnected number and
will stop calling the number.
are hardware devices on the market that will intercept these calls.
Our technical staff will explain you how to do it for free with
your existing hardware.
SIT tone is the key to stopping the unwanted calls. Basically it
is a combination of audio tones that the computer hears and tells
it that the number it just called is out of service. By recording
the SIT tone to your message machine it fakes the computer into
thinking your number is disconnected. The calling computer system
now flags your number and stops calling.
Put your answering machine microphone in front of your PC speakers.
2- Press the button that starts recording your outgoing message.
3- Click on the SIT tone file below and play
the tone followed by your message.
you want to add your message do it after the SIT tone. Make sure
you leave a one or two seconds before the tone and a pause before
your message so there is no interference. Now when a computer dialing
system calls your answering machine it will hear the tone first
and not even wait for the message to play. It will then hang up
and flag your number as a disconnected number eliminating all future
Right click on the SIT
to save the file to your computer then you can edit the SIT file
in an audio editor adding your voice message to it. Record many
different messages that you can change anytime by playing them from
your computer with or with out the SIT tone.
message -> Telephone rings -> Answering machine connects ->
Sit tone plays -> Your message plays "Attention phone solicitors
the party you are calling does not accept phone solicitations and
unidentified calls, Please add this parties phone number to your
do not call list. All others may leave a message after the tone."
will know if it is a telemarketer if the phone disconnects right
after the tone and before the message plays