Cisco 7941G - Unified IP Phone VoIP Administration Manual page 208

Status Menu
Table 7-6
Item
TxSize
TxCnt
Avg Jtr
Max Jtr
RxDisc
RxLost
Voice Quality Metrics
MOS LQK
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.1
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Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Call Statistics Items (continued)
Description
Size of voice packets, in milliseconds, in the
transmitting voice stream.
Number of RTP voice packets transmitted since
voice stream was opened.
Note
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 in the receiving voice stream
that have been discarded (bad packets, too late, and
so on).
Note
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.
This number is not necessarily identical to
the number of RTP voice packets transmitted
since the call began because the call might
have been placed on hold.
The phone will discard payload type 19
comfort noise packets that are generated by
Cisco Gateways, which will increment this
counter.
"Monitoring
9-21.
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