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Reviews around tone (1.00 of 5)
netTalk 857392003016 DUO II VoIP Phone and Device
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The first one frequently lost the dial tone.
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I have lost service at least twice a week...just lost the dial tone
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Of course, it simply does not work at all sometime (no dial tone)
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Once connected, conversation often gets cut-off without warning; or hearing weird tones (long & short) at least once every minute.
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Does NOT support DTMF tones.
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