
Chapter 8 Monitoring the Cisco Unified IP Phone Remotely
Streaming Statistics
Table | Streaming Statistics Area Items (continued) | ||
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Item |
| Description | |
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Rcvr Report Time Sent1 | 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 | |
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| this connection. Includes packets received from different sources if this is a multicast call. | |
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| The value displays as 0 if the connection was set to | |
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Rcvr Octets |
| Total number of payload octets received in RTP data packets by the device since starting | |
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| reception on the connection. Includes packets received from different sources if this is a | |
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| multicast call. The value displays as 0 if the connection was set to | |
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MOS LQK |
| Score that is an objective estimate of the mean opinion score (MOS) for listening quality | |
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| (LQK) that rates from 5 (excellent) to 1 (bad). This score is based on audible concealment | |
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| events due to frame loss in the preceding | |
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| information, see Monitoring the Voice Quality of Calls, page | |
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| Note The MOS LQK score can vary based on the type of codec that the | |
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| Cisco Unified IP Phone uses. |
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Avg MOS LQK |
| Average MOS LQK score observed for the entire voice stream. | |
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Min MOS LQK |
| Lowest MOS LQK score observed from start of the voice stream. | |
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Max MOS LQK |
| Baseline or highest MOS LQK score observed from start of the voice stream. | |
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| These codecs on the Cisco Unified IP Phones 7962G and 7942G provide the following | |
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| maximum MOS LQK score under normal conditions with no frame loss: | |
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| • | G.711 gives 4.5 |
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| • | G.722 gives 4.5 |
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| • | G.728/iLBC gives 3.9 |
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| • G.729 A/AB gives 3.8 | |
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| These codecs on the Cisco Unified IP Phones | |
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| the following maximum MOS LQK score under normal conditions with no frame loss: | |
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| • | G.711 gives 4.5 |
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| • G.729 A /AB gives 3.7 | |
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MOS LQK Version | Version of the Cisco proprietary algorithm used to calculate MOS LQK scores. | ||
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Cumulative Conceal Ratio | Total number of concealment frames divided by total number of speech frames received | ||
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| from start of the voice stream. | |
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Interval Conceal Ratio | Ratio of concealment frames to speech frames in preceding | ||
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| speech. If using voice activity detection (VAD), a longer interval might be required to | |
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| accumulate 3 seconds of active speech. | |
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Max Conceal Ratio | Highest interval concealment ratio from start of the voice stream. | ||
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Conceal Secs |
| Number of seconds that have concealment events (lost frames) from the start of the voice | |
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| stream (includes severely concealed seconds). | |
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Severely Conceal Secs | Number of seconds that have more than 5 percent concealment events (lost frames) from | ||
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| the start of the voice stream. | |
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Latency1 |
| Estimate of the network latency, expressed in milliseconds. Represents a running average | |
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| of the | |
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Max Jitter |
| Maximum value of instantaneous jitter, in milliseconds. | |
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| Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP) |