Answer

For the best sound quality, all calls in CommPeak Dialer, CommPeak Cloud PBX, or CommPeak Softphone are default switched to G.722 HD wideband audio codec, which provides crystal-clear phone calls and sharper, crisper voices.

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IMPORTANT

Call quality depends on both the device you use and your provider.

If you're using a provider that supports G.722 wideband codec, HD provides superior call quality.

Also, you can maintain excellent voice quality and lower bandwidth usage with codecs such as G.711 a/μ or G.729a, assuming you have the bandwidth available.

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NOTE

For the full list of supported codecs, see the What Are the Supported Codecs? article.