Configuring Advanced Features425Parameters Permitted Values Defaultphone_setting.rtcp_xr_report.enable 0 or 1 0Description:Enables or disables the IP phone to periodically (every 5 seconds) send RTCP-XRpackets to another participating phone during a call for call quality monitoring anddiagnosing.0-Disabled1-EnabledNote: It works only if the parameter “voice.rtcp_xr.enable” is set to 1 (Enabled).Web User Interface:NonePhone User Interface:NoneThe VQ-RTCPXR mechanism, complaint with RFC 6035, sends the service quality metricreports contained in SIP PUBLISH messages to the central report collector. Three types ofquality reports can be enabled: Session: Generated at the end of a call. Interval: Generated during a call at a configurable period. Alert: Generated when the call quality degrades below a configurable threshold.A wide range of performance metrics are generated in the following two ways: Based on current values, such as jitter, jitter buffer max and round trip delay. Computed using other metrics as input, such as listening Mean Opinion Score(MOS-LQ) and conversational Mean Opinion Score (MOS-CQ).To operate with central report collector, IP phones must be configured to forward theirvoice quality reports to the specified report collector. You can specify the report collectoron a per-line basis.Users can check the voice quality data of the last call via web user interface or phone userinterface. Users can also specify the options of the RTP status to be displayed on thephone user interface. Options of the RTP status to be displayed on the web userinterface cannot be specified.
