Streaming Statistics - Cisco 7945G Administration Manual

Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Table 8-5
Item
Interval Conceal Ratio Ratio of concealment frames to speech frames in preceding 3-second interval
Max Conceal Ratio
Conceal Secs
Severely Conceal Secs Number of seconds that have more than 5 percent concealment events (lost
Latency
Max Jitter
Sender Size
Sender Reports
Received
Sender Report Time
Received
Rcvr Size
Rcvr Discarded
Rcvr Reports
Received
Rcvr Report Time
Received
Voice Quality Metrics
MOS LQK
Avg MOS LQK
Min MOS LQK
Max MOS LQK
Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.1(3)
OL-17755-01
Streaming Statistics Area Items (continued)
Description
of active speech. If using voice activity detection (VAD), a longer interval
might be required to accumulate 3 seconds of active speech.
Highest interval concealment ratio from start of the voice stream.
Number of seconds that have concealment events (lost frames) from the start
of the voice stream (includes severely concealed seconds).
frames) from the start of the voice stream.
1
Estimate of the network latency, expressed in milliseconds. Represents a
running average of the round-trip delay, measured when RTCP receiver
report blocks are received.
Maximum value of instantaneous jitter, in milliseconds.
RTP packet size, in milliseconds, for the transmitted stream.
Number of times RTCP Sender Reports have been received.
1
Last time at which an RTCP Sender Report was received.
1
RTP packet size, in milliseconds, for the received stream.
RTP packets received from network but discarded from jitter buffers.
Number of times RTCP Receiver Reports have been received.
1
Last time at which an RTCP Receiver Report was received.
1
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
The MOS LQK score can vary based on the type of codec that the
Note
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.722 gives 4.5
• G.728/iLBC gives 3.9
G.729 A/AB gives 3.8
•

Streaming Statistics

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