VoIP (Voice over IP) uses Codecs to transmit the voice packets between Sender (Caller) and Receiver (Callee).
A Codec handles several things whereby 1) The bandwidth usage, 2) compression rate and 3) voice quality are the most obvious.
1) Bandwidth Usage:
2) Compression rate -Audio quality-
3) Voice quality -Smoothness-
There are various Codecs which all handle each item differently and all have their pros and cons. For example, a highly compressible Codec uses less bandwidth but will reduce your audio quality as well as increase CPU usage, i.e. similar as if you would zip a file on your pc, the higher the compression rate the slower your pc becomes”.
However, at ORENcloud we use the OPUS Codec, which is a highly versatile audio codec which is also used by all major players in the communications space such as Google Meet, WhatsApp Voice etc.
The advantage of OPUS is that it can dynamically adjust to the circumstances, if your connection is good the compression will be low hence high definition audio quality while when connection quality decreased it will compress more and vice versa. For example if you are driving from a 5G area through a 3G back to a 4G area, while on the phone during your journey the codec will adapt to the most optimal performance.
To test your connection quality and calculate your optimum bandwidth refer to article Bandwidth Calculator and Speedtest
Article ID: 38
Last updated: 14 Feb, 2021