Cisco OL-19025-01 - Manual (Page 10)

8-10
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
OL-19025-01
Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Streaming Statistics
Related Topics
•
“Configuring Settings on the Cisco Unified IP Phone” chapter
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 1 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 Received 1 Number of times RTCP Sender Reports have been received.
Sender Report Time
Received
1
Last time at which an RTCP Sender Report was received.
Rcvr Size RTP packet size, in milliseconds, for the received stream.
Rcvr Discarded RTP packets received from network but discarded from jitter buffers.
Rcvr Reports Received 1 Number of times RTCP Receiver Reports have been received.
Rcvr Report Time Received 1 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.
Table 8-5 Streaming Statistics Area Items (continued)
Item Description