Call Quality Insight Metrics

AVOXI prides itself in delivering exceptional call quality, through our established relationship with top-tier carriers and our cloud-based infrastructure backed by the Google Cloud Network.  

Below we review the three main items that cause poor call quality issues.

Packet Loss

Packet loss occurs when one or more packets of data traveling across a computer network fail to reach their destination. Packet loss is either caused by errors in data transmission, typically across wireless networks, or network congestion. Packet loss is measured as a percentage of packets lost with respect to packets sent. 


Jitter is defined as the deviation of a data stream from true periodicity. To break this down let us think of a data stream as a flow of packages. If we are building something like a car we need to order the parts and they have to arrive in the right order in a certain time frame for the car to be completed by the deadline. For instance, if you get the engine and axles before you get the body, you have to wait for the body to adhere to them too.  The same is true of a voice stream. The device on one end records the voice which is then chopped up into packets and sent through the internet to the receiver. If everything goes to plan, they will reach the receiver in a timely fashion and in the correct order so the receiver will be able to understand what is said. However, the internet is a very complicated thing and packets can easily get mixed up and the packets can arrive at different intervals or even in a different order. This can cause serious issues when making and receiving calls.

Understanding MOS Score

The Mean Opinion Score (MOS) has been a commonly-used metric to measure the overall voice call quality for decades.  AVOXI is a global leader in VoIP call quality standards. Over 99.996% of calls handled by AVOXI have received MOS scores above 4.2, the industry standard for “good” to “excellent” voice quality. Our goal is to make it so that you are never unable to make a call. 

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