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Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP and SIP)
OL-15790-01
Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Streaming Statistics
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.
Interval Conceal Ratio
Ratio of concealment frames to speech frames in preceding 3-second
interval of active speech. If using voice activity detection (VAD), a
longer interval might be required to accumulate 3 seconds of active
speech.
Max Conceal Ratio
Highest interval concealment ratio from start of the voice stream.
Conceal Secs
Number of seconds that have concealment events (lost frames) from
the start of the voice stream (includes severely concealed seconds).
Severely Conceal Secs
Number of seconds that have more than 5 percent concealment events
(lost frames) from the start of the voice stream.
Latency
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.
Max Jitter
Maximum value of instantaneous jitter, in milliseconds.
Sender Size
RTP packet size, in milliseconds, for the transmitted stream.
Sender Reports Received
1
Number of times RTCP Sender Reports have been received.
Sender Report Time
Received
1
Last time at which an RTCP Sender Report was received.
Rcvr Size
RTP packet size, in milliseconds, for the received stream.
Rcvr Discarded
RTP packets received from network but discarded from jitter buffers.
Rcvr Reports Received
1
Number of times RTCP Receiver Reports have been received.
Rcvr Report Time Received
1
Last time at which an RTCP Receiver Report was received.
Table 8-5
Streaming Statistics Area Items (continued)
Item
Description
