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Unread 09-03-2007, 04:57 AM   #1
richard99
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Default Sipura 3000 DTMF tones while talking

When I call somebody then the I hear DTMF tones like other party pressing one of the number keys. It is not constant, say during talk of 1/2 an hour you listen at least 5 to 6 times. Even I asked speaking party, did you press any key, answer no.
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