Cisco 7961G-GE - IP Phone VoIP Administration Manual page 203

Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Table 7-6
Item
RxDisc
RxLost
Voice Quality Metrics
MOS LQK
Avg MOS LQK
Min MOS LQK
Max MOS LQK
MOS LQK Version
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
OL-11953-01
Call Statistics Items (continued)
Description
Number of RTP packets in the receiving voice stream
that have been discarded (bad packets, too late, and
so on).
The phone will discard payload type 19
Note
comfort noise packets that are generated by
Cisco Gateways, which will increment this
counter.
Missing RTP packets (lost in transit).
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 8-second interval of the voice
stream. For more information, see the
the Voice Quality of Calls" section on page
The MOS LQK score can vary based on the type of
codec that the Cisco Unified IP Phone uses.
Average MOS LQK score observed for the entire
voice stream.
Lowest MOS LQK score observed from start of the
voice stream.
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
•
Version of the Cisco proprietary algorithm used to
calculate MOS LQK scores.
Status Menu
"Monitoring
9-21.
7-19