Cisco Systems OL-19025-01 manual

Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone

Status Menu

Table 7-4 Call Statistics Items for the Cisco Unified Phone 6900 Series (continued)

Item	Description
Cumulative 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.
Latency	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.

	Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
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