Cisco 8831NR Administration Manual page 119

Model Information, Status, and Statistics
Item
Rcvr Packets
Sender Packets
Avg Jitter
Max Jitter
Rcvr Discarded
Rcvr Lost Packets
Voice Quality Metrics
MOS LQK
Avg MOS LQK
Min MOS LQK
Max MOS LQK
Cumulative Conceal Ratio
Max Conceal Ratio
Conceal Secs
Description
Number of RTP voice packets received since voice stream was
opened.
This number is not necessarily identical to the
Note
number of RTP voice packets received since the call
began because the call might have been placed on
hold.
Number of RTP voice packets transmitted since voice stream
was opened.
This number is not necessarily identical to the
Note
number of RTP voice packets transmitted since the
call began because the call might have been placed
on hold.
Estimated average RTP packet jitter (dynamic delay that a
packet encounters when going through the network) observed
since the receiving voice stream was opened.
Maximum jitter observed since the receiving voice stream was
opened.
Number of RTP packets discarded by the receiver.
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.
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.
Total number of concealment frames divided by total number
of speech frames received from start of the voice stream.
Maximum concealment ratio that is observed during the call.
Number of seconds that have concealment events (lost frames)
from the start of the voice stream (includes severely concealed
seconds).
Cisco Unified IP Conference Phone 8831 and 8831NR Administration Guide
Call Statistics Information
109