Cisco 3905 Administration Manual page 91

Remote Monitoring
Item
Rcvr Octets
MOS LQK
Avg MOS LQK
Min MOS LQK
Max MOS LQK
MOS LQK Version
Cumulative Conceal Ratio
Interval Conceal Ratio
Max Conceal Ratio
Conceal Secs
Severely Conceal Secs
LatencyStreaming
Statistics, on page 75
Max Jitter
Sender Size
Description
Total number of payload octets received in RTP data packets by the device since
starting reception on the connection. Includes packets received from different
sources if this is a multicast call. The value displays as 0 if the connection was
set to send-only mode.
Objective estimate of the Mean Opinion Score (MOS) for Listening Quality
(LQK) that ranks audio quality from 5 (excellent) to 1 (bad). This score is based
on audible-concealment events due to a frame loss in the preceding 8 seconds
of the voice stream.
The MOS LQK score can vary based on the type of codec that the
Note
Cisco Unified IP Phone uses.
Average MOS LQK score for the entire voice stream.
Lowest MOS LQK score from the start of the voice stream.
Baseline or highest MOS LQK score from the start of the voice stream.
The following codecs provide the corresponding maximum MOS LQK scores
under normal conditions with no frame loss:
• G.711: 4.5
• G729A/AB: 3.7
Version of the Cisco-proprietary algorithm used to calculate the MOS LQK
scores.
Total number of concealment frames divided by total number of speech frames
received from start of the voice stream.
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.
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).
Number of seconds that have more than 5 percent concealment events (lost
frames) from the start of the voice stream.
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.
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
Streaming Statistics
77