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Chapter 5 Data Testing
OneExpert DSL User's Guide
22052280, Rev. 015 April 2019 116
Additionally, RFC 2680 and RFC 3357 define enhanced analysis methods that are used
to measure the quality of a media stream. There are two main statistics for this: Loss
Period and Loss Distance.
• Leave Latency Pass – Enter the Pass threshold, in milliseconds.
Leave Latency is the amount of time between sending
the “leave” message and receiving the last video
packet on the receiver.
• Leave Latency Fail – Enter the Fail threshold, in milliseconds.
• Join Latency Pass – Enter the Pass threshold, in milliseconds.
Join Latency is the amount of time between sending the
“join” message and receiving the first video packet on
the receiver.
• Join Latency Fail – Enter the Fail threshold, in milliseconds.
• Jitter Pass – Enter the Pass threshold, in milliseconds. .
• Jitter Fail – Enter the Fail threshold, in milliseconds.
• Loss Rate Pass – Enter the Pass threshold, in milliseconds.
• Loss Rate Fail
– Enter the Fail threshold, in milliseconds.
• Error Indicator Pass – Enter the Pass threshold.
• Error Indicator Fail – Enter the Fail threshold.
• PID Timeout – Enter the PID Timeout.
This is the amount of time to wait for a PID that has been
declared as having video or audio data for traffic, since the last
traffic was received. If this threshold is violated, then the PID
Timeout result will increment.
• PAT/PMT Timeout – Enter the PAT/PMT Timeout.
This is the amount of time to wait after the last received
PAT or PMT packet before declaring a timeout condition
(which would then increment the PAT Errors or PMT
Errors statistics)
• Packet Gap
– Enter the packet gap, in milliseconds.
Packet gap is the time interval between subsequent packets in
a video stream. When the packet gap exceeds the threshold set
here, the “Gap Errors” statistic will increment.