Quality Estimate Metrics - Avaya B199 Installing And Administering

Settings configuration and management
RTCP XR as voice quality monitoring report
If you enable the voice quality monitoring feature, the phone collects the metrics, generates Real-
Time Control Protocol Extended Report (RTCP XR), and sends RTCP XR as a SIP
PUBLISH message to the specified report collector. View the statistics of the established phone
calls on a specific information collecting portal.
The phone collects the metrics in the following cases:
• One of the call parties ends the call.
• Call parameters, such as codec and far-end IP address or port, change.
• One of the call parties puts the call on hold or resumes it.
RTCP XR parameters
The following table lists parameters that the RTCP XR contains:
Parameter
CallId
LocalId
RemoteId
OrigID
LocalGroup
LocalAddr
LocalMAC
RemoteAddr
Timestamps
SessionDesc
JitterBuffer
PacketLoss
BurstGapLoss
Delay
Signal
QualityEst

Quality estimate metrics

The following table shows the direct measures of the quality of the established call or
transmission. These metrics incorporate the effects of codec type, packet loss, discard,
burstiness, and delay.
February 2021
Description
Party leg identifier
Reporting device for the media session
Remote device of the media session
Device that originated the session
Identification for aggregation of the local phone
Address information, including an IP address, a port number, and SSRC of the
phone that receives the information
The Media Access Control (MAC) address of the local phone
Address information, including an IP address, a port number, and SSRC of the
phone that is the source of information.
Call start and call end in Coordinated Universal Time (UTC)
A shortened version of the media session including codecs (ILBC, Opus,
PCMU, PCMA, G722, or G729), silence suppression status (on or off), and
number of packets per second
Jitter Buffer metric definitions
Packet loss percentage and Jitter buffer discard rate percentage
Burst-to-Gap loss metric
Network delay between the call parties
Non-packet elements of the voice over IP system. Includes a Signal level (SL)
metric, which typically has a negative value
Measures of the established call quality
Installing and Administering Avaya Conference Phone B199
Comments on this document? infodev@avaya.com
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