Question
What Is MOS In Voice Calls?
Applies To
- Voice API
Answer
The Mean Opinion Score (MOS) is one metric for measuring overall voice call quality. MOS ranges between 1 to 5 of the perceived quality of a voice call (1-lowest and 5-highest).
With a call sample, our Vonage Support Engineers can look up the MOS for that specific call. This helps Vonage and the customer determine if a network quality problem may be affecting the quality of a call concerning symptoms such as garbled audio, missing audio, or one-way audio. A MOS of less than 4 may indicate network quality which may impact the call quality.
Additional Steps
- Use a wired connection instead of Wi-Fi for stable bandwidth.
- Close unused applications consuming internet bandwidth.
- Ensure sufficient upload/download speed by testing with an internet speed checker.
- Minimize network congestion by limiting other data-heavy activities during calls.
Articles in this section
- Do we retry if the voice event webhook fails?
- How do I verify that the Voice API Webhook request and it's payload has not been tampered during transit?
- How To Check Call Quality With Voice Inspector
- What is a Conversation ID?
- How to configure the custom webhook timeout for Voice API functionality and what are the allowed timeout ranges ?
- How do I change TTL for the Conversations and Call Legs?
- Why are call progress events not being received on the Event URL defined in the conversation action NCCO?
- Why is there an extended silence at the beginning of a call and how can it be reduced?
- Intermittent WebSocket Disconnections
- What Is An NCCO