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Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)
OL-20851-01
Chapter
Streaming Statistics
Sender Octets Total number of payload octets transmitted in RTP data packets by the phone since starting
this connection. The value is 0 if the connection is set to receive only mode.
Sender Codec Type of audio/video encoding used for the transmitted stream.
Sender Reports Sent
1
Number of times the RTCP Sender Report have been sent.
Sender Report Time Sent
1
Internal time stamp indication when the last RTCP Sender Report was sent.
Rcvr Lost Packets Total number of RTP data packets that have been lost since starting receiving data on this
connection. Defined as the number of expected packets less the number of packets actually
received, where the number of received packets includes any that are late or duplicate. The
value displays as 0 if the connection was set to send-only mode.
Avg Jitter Estimate of mean deviation of the RTP data packet inter-arrival time, measured in
milliseconds. The value displays as 0 if the connection was set to send-only mode.
Rcvr Codec Type of audio/video encoding used for the received stream.
Rcvr Reports Sent
1
Number of times the RTCP Receiver Reports have been sent.
Rcvr Report Time Sent
1
Internal time stamp indication when a RTCP Receiver Report was sent.
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 Objective estimate of the Mean Opinion Score (MOS) for Listening Quality (LQK) that
ranks audio quality from 5 (excellent) to 1 (bad). This score is based on
audible-concealment events due to a frame loss in the preceding 8 seconds of the voice
stream.
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 for the entire voice stream.
Min MOS LQK Lowest MOS LQK score from the start of the voice stream.
Max MOS LQK Baseline or highest MOS LQK score from the start of the voice stream.
The following codecs provide the corresponding maximum MOS LQK scores under
normal conditions with no frame loss:
• G.711: 4.5
• G.722: 4.5
• G.728/iLBC: 3.9
• G729A/AB: 3.7
MOS LQK Version Version of the Cisco-proprietary algorithm used to calculate the MOS LQK scores.
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.
Table 8-5 Streaming Statistics Area Items (continued)
Item Description