We are in a time of remote working and the reliance on network sensitive protocols is quite high for example VoIP end-user will call (not using VoIP) to complain that they have odd issues with there calls dropping and quality being bad.
Below is a very useful table for troubleshooting the cause to optimise your time.
|Enduser reports||Most Likely cause|
|Choppy Voice||Dropped packets (errors) / Jitter|
|Delay / Echo||Latency|
|Synthetic Voice (Dalek)||Jitter / Out of sequence delivery|
|Soft / Loud Voice / muffled voice||Gain adjustment|
|Silence / Background Noise||Voice activity detection (noise gates) / input issue check the MIC|
Hope the above helps with common VoIP quality issues.