Cisco Systems OL-8555-02 manual Call Statistics Screen

Chapter 6 Viewing Model Information, Status, Statistics, and Security Information on the Cisco Unified IP Phone

	Call Statistics Screen
Table 6-6 Call Statistics (continued)
Item	Description
Min MOS LQK	Lowest MOS LQK score observed from start of the
	voice stream.
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.729 A /AB gives 3.7
MOS LQK Version	Version of the Cisco proprietary algorithm used to
	calculate MOS LQK scores.
Cmltve 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.

	Cisco Unified IP Phone 7940G/7960G Administration Guide for Cisco Unified CallManager 4.2(3)
OL-8555-02		6-19