We’ve added support for the Opus codec and made it the preferred codec for calls.
Opus is one of the most advanced audio codecs available, delivering excellent voice quality whilst automatically adapting to changing network conditions. As a result, internal calls now sound significantly clearer and more natural.
Calls to and from external numbers will continue to use the G.711 codec, as this is currently the codec supported by upstream providers. Therefore, the audio quality of external calls will remain unchanged.