8-12
Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 7.0
OL-15483-01
Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Streaming Statistics
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 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
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 9-15
.
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.722 gives 4.5
•
G.728/iLBC gives 3.9
•
G.729 A/AB gives 3.8
MOS LQK Version
Version of the Cisco proprietary algorithm used to calculate 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.
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.
Table 8-5
Streaming Statistics Area Items (continued)
Item
Description