Cisco 6921 Administration Guide - Page 114

Streaming Statistics Chapter 8 Monitoring the Cisco Unified IP Phone Remotely Table 8-5 Streaming Statistics Area Items (continued) Item Description 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 Latency1 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. Max Jitter Maximum value of instantaneous jitter, in milliseconds. Sender Size Sender Reports Received1 RTP packet size, in milliseconds, for the transmitted stream. Number of times RTCP Sender Reports have been received. Sender Report Time Received1 Last time at which an RTCP Sender Report was received. Rcvr Size RTP packet size, in milliseconds, for the received stream. Rcvr Discarded Rcvr Reports Received1 Rcvr Report Time Received1 RTP packets received from network but discarded from jitter buffers. Number of times RTCP Receiver Reports have been received. Last time at which an RTCP Receiver Report was received. Voice Quality Metrics 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. 1. When the RTP Control Protocol is disabled, no data generates for this field and thus displays as 0. Related Topics • "Configuring Settings on the Cisco Unified IP Phone" chapter 8-10 Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP) OL-19025-01