Security Configuration - Cisco 6921 Administration Manual

Status Menu
Table 7-4
Item
Interval Conceal
Ratio
Max Conceal Ratio Highest interval concealment ratio from start of the voice stream.
Conceal Secs
Severely Conceal
Secs
Latency
MOS LQK
Avg MOS LQK
Min MOS LQK
Max MOS LQK
MOS LQK Version Version of the Cisco-proprietary algorithm used to calculate the MOS LQK

Security Configuration

To display the Security Configuration screen, follow these steps.
Procedure
Step 1 Press the Applications button.
Step 2 Select Admin Settings.
Step 3 Select Security.
For more information, refer
Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
7-10
Call Statistics Items for the Cisco Unified Phone 6900 Series (continued)
Description
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.
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.
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.
Note The MOS LQK score can vary based on the type of codec that the
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
•
• G.722: 4.5
• G.728/iLBC: 3.9
• G729A/AB: 3.7
scores.
"Configuring Security on the Cisco Unified IP Phone" section on page
Chapter
3-15.
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