Cisco Systems OL-11528-01 manual Mos Lqk

Chapter 8 Monitoring the Cisco Unified IP Phone Remotely

		Streaming Statistics
Table 8-5 Streaming Statistics Area Items (continued)
	Item	Description
	Rcvr Packets	Total number of RTP data packets received by the phone since starting
		receiving data on this connection. Includes packets received from different
		sources if this is a multicast call. The value displays as 0 if the connection was
		set to send-only mode.
	Rcvr Octets	Total number of payload octets received in RTP data packets by the device
		since starting reception on the connection. Includes packets received from
		different sources if this is a multicast call. The value displays as 0 if the
		connection was set to send-only mode.
	MOS LQK	Score that is an objective estimate of the mean opinion score (MOS) for
		listening quality (LQK) that rates from 5 (excellent) to 1 (bad). This score is
		based on audible concealment events due to frame loss in the preceding
		8-second interval of the voice stream. For more information, see the
		“Monitoring the Voice Quality of Calls” section on page 9-21.
		Note The MOS LQK score can vary based on the type of codec that the
		Cisco Unified IP Phone uses.
	Avg MOS LQK	Average MOS LQK score observed for the entire voice stream.
	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.
	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.
	Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE Administration Guide for Cisco Unified CallManager
	OL-11528-01		8-15