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Cisco 7965G

Cisco 7965G
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7-15
Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.0
OL-12650-01
Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Status Menu
Avg Jitter Estimated average RTP packet jitter (dynamic delay
that a packet encounters when going through the
network) observed since the receiving voice stream
was opened.
Max Jitter Maximum jitter observed since the receiving voice
stream was opened.
Rcvr Discarded Number of RTP packets in the receiving voice stream
that have been discarded (bad packets, too late, and
so on).
Note The phone will discard payload type 19
comfort noise packets that are generated by
Cisco Gateways, which will increment this
counter.
Rcvr Lost Packets Missing RTP packets (lost in transit).
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 8-second interval of the voice
stream. For more information, see the
“Monitoring
the Voice Quality of Calls” section on page 9-17.
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.722 gives 4.5
G.728/iLBC gives 3.9
G.729 A/AB gives 3.8
MOS LQK Version Version of the Cisco proprietary algorithm used to
calculate MOS LQK scores.
Cumulative Conceal
Ratio
Total number of concealment frames divided by total
number of speech frames received from start of the
voice stream.
Table 7-6 Call Statistics Items (continued)
Item Description

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