Cisco Systems OL-11524-01 manual Streaming Statistics

Chapter 8 Monitoring the Cisco Unified IP Phone Remotely

		Streaming Statistics
Table 8-5	Streaming Statistics Area Items (continued)
Item		Description
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.
Cumulative Conceal		Total number of concealment frames divided by total number of speech
Ratio		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.
Latency1		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.
Max Jitter		Maximum value of instantaneous jitter, in milliseconds.
Sender Size		RTP packet size, in milliseconds, for the transmitted stream.
Sender Reports		Number of times RTCP Sender Reports have been received.
Received1
Sender Report Time		Last time at which an RTCP Sender Report was received.
Received1
Rcvr Size		RTP packet size, in milliseconds, for the received stream.
Rcvr Discarded		RTP packets received from network but discarded from jitter buffers.

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones

OL-11524-01 8-17