Specifications

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Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 8.0
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Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Streaming Statistics
Sender Report Time
Sent
1
Internal time stamp indication when a 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 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
Monitoring the Voice Quality of Calls, page 9-14.
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 3.8
• G.728/iLBC gives 3.9
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).
Table 8-5 Streaming Statistics Area Items (continued)
Item Description