Cisco 8821 Administration Manual page 112

Streaming Statistics Web Page
Field
Rcvr lost packets
Avg jitter
Receiver codec
Receiver reports sent
Receiver report time sent
Rcvr packets
Rcvr octets
MOS LQK
Avg MOS LQK
Min MOS LQK
Max MOS LQK
MOS LQK version
Cumulative conceal ratio
Interval conceal ratio
Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager
102
Description
Number of missing RTP packets (lost in transit)
Estimated average RTP packet jitter (dynamic delay that a packet
encounters when going through the network).
Type of audio encoding received by the phone: G.729, G.711 u-law,
G.711 A-law
Number of times this streaming statistics report has been accessed from
the web page (resets when the phone resets)
Number of packets received by the phone
Total number of octets received by the phone.
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.
The MOS LQK score can vary based on the type of codec that the 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.729 A /AB gives 3.7
Version of the Cisco proprietary algorithm used to calculate 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
Phone Statistics