snom klarVOICE allows to capture more than double of the spectrum of voice frequencies that by standard phones. The audio quality can be compared to FM radio,The new snom klarVOICE handset works with the codec G.722 and can be connected to any snom phone in the 3xx family. This makes it possible to have klarVOICE quality in the whole office,Using the klarVOICE handset works only if the voice stream between then phones uses the G.722 codec. As soon as you call a PSTN number you will feel the difference.