2 Description of ‘VoLTE Report’ Template > 2.7 ‘Quality (Integrity) Statistics’ Worksheet
2.7 ‘Quality (Integrity) Statistics’ Worksheet
2.7.1 Call Quality – Speech Quality Score
For definition of ‘acceptable call quality’, see section 2.5.2.
• Statistics tabulated as follows:
 
Acceptable Call Quality
Acceptable Calls (Count)
Low Call Quality (Count)
Threshold (MOS)
Downlink
89.6%
43
5
2.7
• ‘Acceptable’ percentage also visualized in pie chart, where samples falling below the MOS threshold are labeled ‘Low Call Quality’.
2.7.2 Speech Quality Samples – Speech Quality Score
• Statistics tabulated as follows:
Speech Quality Score
Mean
Max
Min
Std Dev
Samples
% < 2.7
Downlink
3.61
4.426
1.035
0.75
143
9.09
Uplink
 
 
 
 
 
 
• Same data also displayed in bar chart binned according to this legend:
 
Downlink
Uplink
Range
Value
Value
Bad (< 1.6)
4.2
 
Poor (1.6-2.7)
4.9
 
Fair (2.7-3.2)
9.1
 
Good (3.2-3.7)
19.6
 
Excellent (> 3.7)
62.2
 
• Same data plotted on map, color coded with same binning as in table.
2.7.3 Speech Path Delay
For the KPI definition, see section 2.5.2.
• Statistics tabulated as follows:
 
Mean
Max
Min
Std Dev
Samples
Roundtrip
931.66
1029
878
34.4
71
• Same data also displayed in bar chart binned according to this legend:
 
% of Total
Range
Value
[Min, 0)
0.0
[0, 200)
0.0
[200, 400)
0.0
[400, 600)
0.0
[600, 800)
0.0
[800, 1000)
94.4
[1000, 1200)
5.6
[1200, Max]
0.0