Chapter 8 Viewing Security, Device, Model, Status, and Call Statistics Information on the Phone
Viewing the Phone Status Menu
Table
Item
Description
Voice Quality Metrics
MOS LQK | Score that is an objective estimate of the mean opinion score (MOS) |
| for listening quality (LQK) that rates from 5 (excellent) to 1 (bad). |
| This score is based on audible concealment events due to frame loss |
| in the preceding |
| information, see “Monitoring the Voice Quality of Calls” section on |
| page |
| Note The MOS LQK score can vary based on the type of codec |
| that the Cisco Unified IP Phone uses. |
|
|
Avg MOS LQK | Average MOS LQK score observed for the entire voice stream. |
|
|
Min MOS LQK | Lowest MOS LQK score observed from start of the voice stream. |
|
|
Max MOS LQK | Baseline or highest MOS LQK score observed from start of the |
| voice stream. |
| These codecs provide the following maximum MOS LQK score |
| under normal conditions with no frame loss: |
| • G.711 gives 4.5 |
| • G.729 A /AB gives 3.7 |
|
|
MOS LQK Version | Version of the Cisco proprietary algorithm used to calculate MOS |
| LQK scores. |
|
|
CumConcealRatio | Total number of concealment frames divided by total number of |
| speech frames received from start of the voice stream. |
|
|
IntConcealRatio | Ratio of concealment frames to speech frames in preceding |
| |
| (VAD), a longer interval might be required to accumulate 3 seconds |
| of active speech. |
|
|
MaxConcealRatio | Highest interval concealment ratio from start of the voice stream. |
|
|
Conceal Secs | Number of seconds that have concealment events (lost frames) from |
| the start of the voice stream (includes severely concealed seconds). |
|
|
SevConcealSecs | Number of seconds that have more than 5 percent concealment |
| events (lost frames) from the start of the voice stream. |
|
|
Related Topics
•Viewing the Status Messages, page
•Viewing Network Statistics, page
•Viewing Firmware Versions, page
Cisco Unified Wireless IP Phone 7925G,
