Jitter 10ms

Unanswered Question
Jun 18th, 2007

What is an acceptable Jitter Rate for an SLA with a service provider?

MY provider is saying that they will guarantee that jitter will not go

above 10 milliseconds and it will be measured in 5 minute intervals.

This is an MPLS network and we will run IP voice over this network.

What amount of Jitter can cause voice communication problems? Is it 8

milliseconds?

Thank You for any responses, all responses are greatly appreciated.

Have a wonderful day.

I have this problem too.
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Paolo Bevilacqua Mon, 06/18/2007 - 09:24

That depends also by the endpoints you are using. eg the cisco router and telephones can tolerate jitter also of 20 - 30 msec quite well.

blatkinson Mon, 06/18/2007 - 09:44

If you know your jitter will be consistent and low, you can set a static jitter buffer on the endpoints. Cisco says their dynamic jitter buffers are good at adjusting the buffer but if you know your jitter limits already you can go with a static buffer as the dynamic buffer is always going to add a little "wiggle room" so it can adapt just in case there is a deviation from the trend.

Here are a few references that can help you:

http://www.futurehardware.in/339875.htm

http://www.ciscopress.com/articles/article.asp?p=606583&seqNum=2

Please rate if this helps.

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