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Home > Success Center > VoIP & Network Quality Manager (VNQM) > How to calculate packet loss in IP SLA VoIP Jitter operations

How to calculate packet loss in IP SLA VoIP Jitter operations

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Created by Melanie Boyd, last modified by MindTouch on Jun 16, 2016

Views: 1,100 Votes: 3 Revisions: 3


This article provides the formula used to calculate packet loss.


  • VNQM
  • Orion IP SLA Manager 3.0 or later


Packet loss is calculated using the following formula.

Packet loss = (SD + DS + MIA) / (SD + DS + MIA + LA + OOS + N)


SD = rttMonLatestJitterOperPacketLossSD (<op_num/>)
DS = rttMonLatestJitterOperPacketLossDS (<op_num/>)
OOS = rttMonLatestJitterOperPacketOutOfSequence (<op_num/>)
MIA = rttMonLatestJitterOperPacketMIA (<op_num/>)
LA = rttMonLatestJitterOperPacketLateArrival (<op_num/>)
N = rttMonLatestJitterOperNumOfRTT (<op_num/>)
<op_num/> = The operation number of your VoIP Jitter operation.



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