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Poor quality calls

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recently we have many users reflects poor quality calls, after checking the report, I found some of the poor call are made from same subnet to another. How can I make it solved?

Thursday, August 18, 2016 10:09 AM

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First you should also speak with your network team, maybe the uplinks between the switches don't have enough bandwidth for the voice traffic.

If you analyze the report on the monitoring server, do you have packet loss, jitter etc. on this calls?
regards Holger Technical Specialist UC
- Proposed as answer by Alice-Wang Monday, August 29, 2016 9:08 AM
- Marked as answer by Alice-Wang Friday, September 9, 2016 10:03 AM
Thursday, August 18, 2016 10:50 AM

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First you should also speak with your network team, maybe the uplinks between the switches don't have enough bandwidth for the voice traffic.

If you analyze the report on the monitoring server, do you have packet loss, jitter etc. on this calls?
regards Holger Technical Specialist UC
- Proposed as answer by Alice-Wang Monday, August 29, 2016 9:08 AM
- Marked as answer by Alice-Wang Friday, September 9, 2016 10:03 AM
Thursday, August 18, 2016 10:50 AM
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Holger is spot on. In addition to the network you might want to try running KHI as well.

If only some of the poor calls are made from one subnet to another, instead of all of them. You should run Key Health Indicators on your front ends to see if there is someone else going on.

https://www.microsoft.com/en-us/download/details.aspx?id=46895 - KHI download

-Don

Thursday, August 18, 2016 10:55 AM
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Hi holger,

The bandwidth should be ok, since we have 20 subnets in this site, others should be ok, but 4 of them have issue. this two is most obvious. I checked the report. Packet loss for some poor calls should be ok. jitter and round trip is not so good for some calls. attached the report and route trace. It is traced from anther site.

Friday, August 19, 2016 2:31 AM
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OK, I will try to run it. Thanks.

Friday, August 19, 2016 2:33 AM
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Sunday, August 21, 2016 1:20 PM
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You should talk with your network guys, it looks like a network problem. Maybe some other application used to much bandwidth?
regards Holger Technical Specialist UC

Sunday, August 21, 2016 1:29 PM
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how to provide any evidence for the network guys? For example, is there any way to track what hop has a huge packet loss? So they can mitigate.

Friday, August 26, 2016 9:06 AM
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If you have the QoS report from the monitoring server, the network guys should check the switch logs for high traffic or packet loss problems for this time.
regards Holger Technical Specialist UC

Friday, August 26, 2016 9:16 AM