Has anyone used the AudioCodes MP-20x? <a href="http://audiocodes.com/Objects/Analog_Telephone_Adapter_Series_MP_20X.pdf">http://audiocodes.com/Objects/Analog_Telephone_Adapter_Series_MP_20X.pdf</a><br><br>Seems like a good device, but I can't seem to find anyone actually using them...
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