Tool Description: RTCP XR - RFC3611

RTCP XR - RTP Control Protocol Extended Reports - provides a rich set of data for Voice over IP management. The data for these extended reports can be provided by technology such as VQmon embedded into IP phones and gateways and sent periodically during the call to provide real-time feedback on call quality.

RFC 3611: RTP Control Protocol Extended Reports (RTCP XR)

The VoIP Metrics payload is shown below:

Network Packet Loss	Packets discarded due to jitter	Density of lost/ discarded packets in burst periods	Density of lost/ discarded packets in gap periods
Average duration of burst periods (mS)		Average duration of gap periods (mS)
RTP Round Trip Delay (mS)		End System Delay (mS)
Signal Level (dBm)	Noise Level (dBm)	Residual Echo Return Loss (dB)	Gmin - typically 16, which classifies >5% loss as burst
R factor	External R factor	MOS LQ	MOS CQ
PLC and Jitter Buffer Config	Reserved	Average jitter buffer delay (mS)
Current max jitter buffer delay (mS)		Max jitter buffer size (mS)

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