Cisco 7941G Administration Guide - Page 226
Cisco Unified IP Phone uses., Interval Conceal Ratio
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Streaming Statistics Chapter 8 Monitoring the Cisco Unified IP Phone Remotely Table 8-5 Streaming Statistics Area Items (continued) Item Description 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 9-21. 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 3.7 MOS LQK Version Version of the Cisco proprietary algorithm used to calculate MOS LQK scores. Cumulative Conceal Total number of concealment frames divided by total number of speech Ratio 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. 8-16 Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.1 OL-14620-01