Exfo EXpert IPTV Test Tools (FTB-200v2) Manual de usuario descargar pdf (Pagina 80)

80



Transport Metrics

PacketLossMetricsprovideessentialdataonIPTVpacketlossbeforeandaftertheeffectsof

errorcorrection(suchasFECorReliableUDP).Burstandgapstatisticsprovidevaluable

insightintothetimedistributionoflostanddiscardedpackets.

MPEG-TS Packet Loss Metrics

Metric Description

PacketLossRate PercentageofMPEG‐TSpacketslostinthenetwork

PacketDiscardRate Percentageofpacketsdiscardedduetolatearrival

OutofSequencePacketRate Percentageofpacketsarrivingoutofsequence

DuplicatePacketRate Percentageofduplicatepackets

BurstLossRate Percentageofpacketslostwithinburstperiods

BurstLength Averagelengthofburstperiods

GapLossRate Percentageofpacketslostwithingapperiods

GapLength Averagelengthofgapsbetweenbursts

PCR(ProgramClockReference)JitterMetrics

Metric Description

PCRJitter ProgramClockReferenceJitter

MDI(MediaDeliveryIndex)Metrics

Metric Description

MDIDelayFactor MediaDeliveryIndexDelayFactoristhemaximumdifference,observed

attheendofeachmediastreampacket,betweenthearrivalofmedia

dataandthedrainofmediadata

MDIMediaLossRate MediaDeliveryIndexLossRateisthecountoflostorout‐of‐orderpackets

carryingstreamingapplicationinformationoveraselectedtimeinterval,

1 2 ... 75 76 77 78 79 80 81 82

Sin comentarios

Exfo EXpert IPTV Test Tools (FTB-200v2) Manual de usuario Pagina 80