The administrator discovers that in the given period, while a particular device user is moving, all Wi-Fi roams are completed successfully with no reported
Roam Failed
or
Retry
event. However, a
Voice call warning
event occurs at the exact time of the roam instance.
The following screen depicts a 3-minute call (10:27 to 10:29) resulting in four perfect roams, all with indications of
Voice call warning
.
1
4 voice call warnings with event times listed. Expand to view details.
2
4 roams, 100% completed without retry.
Expand each
Voice call warning
to note specific characteristics of the voice quality problems.
VOIP Link Quality
(Voice over IP link quality), a standard scale of audio Mean Opinion Score (MOS) of 1 to 5, is less than 4. Wireless Insights calculates this value for small slices of the voice call, with focus on short periods over roam events. An MOS value less than 4 is concerning.
Consecutive packet loss is more than 20, and in other instances it is similar or larger (worse). 20+ consecutive packets missing in short roaming periods is concerning.
Select the warning to view the RAW OUTPUT.
1
MOS = 3.77, less than 4
2
23 consecutive packets lost
In this example, the issue is affecting the overall user experience of audio quality, loss of syllables/words, and choppiness. Users may not have noticed this yet, or not reported it, or reported it only on a small scale.
