Cisco 7800 Series Administration Manual page 142

Cisco IP Phone Web Page
Parameter
Max MOS LQK
MOS LQK Version
Cumulative Conceal Ratio
Interval Conceal Ratio
Max Conceal Ratio
Conceal Secs:
Severely Conceal Secs
Latency
Max Jitter
Rcvr Discarded
Download Status
PNG Download Status
Parameter
Last PNG Download Status
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
128
Description
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.729 A /AB gives 3.7
• iLBC gives 3.9
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.
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.
Number of milliseconds for latency.
Number of milliseconds for receiver jitter.
Number of RTP packets in the receiving voice stream that have been
discarded (bad packets, too late, and so on).
The phone discards payload type 19 comfort noise packets that
Note
are generated by Cisco gateways, which increments this
counter.
Description
Displays the last downloaded PNG status.