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Call quality issues with Teams

We just moved to Teams. Calls/meeting inside our network have choppy video/voice quality. People outside the network have no issues. Only if the traffic traverses the UTM does it have issue.

Does anyone have a writeup on how to configure the UTM so it doesn't mess with Teams traffic?

Thanks!

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J.Janssens over 5 years ago +1

We had a lot of customers with VoIP and Webconf issues (Teams, Skype for Business and Zoom). The magic trick for us was to disable SYN flood protection. The difference was huge.
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0 BAlfson over 5 years ago

Hi Paul,

You might also take a look at https://docs.microsoft.com/en-us/office365/enterprise/urls-and-ip-address-ranges#skype-for-business-online-and-microsoft-teams.

At one of my clients, I determined that Teams caused a tremendous amount of virtual memory swapping in the UTM even after skipping both Web Filtering and Snort (IPS). What UTM do you have and what are your Internet speeds?

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 Paul Fisher over 5 years ago in reply to BAlfson

Thanks for that. SG450.
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0 BAlfson over 5 years ago in reply to Paul Fisher

Depending on the download speed of your internet connection, unless you have more than 8 internal users on a call, I would think you should be OK just excepting the UDP traffic as suggested by papa_.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 Paul Fisher over 5 years ago in reply to BAlfson

We have gigabit internet. Only 8 internal? We have 20-25 people on calls.
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0 BAlfson over 5 years ago in reply to Paul Fisher

If you have 20-25 people in the office on call(s) at the same time, you might want to watch top at the command line.

Let us know if you see high %sy when folks complain.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 BAlfson over 5 years ago in reply to Paul Fisher

If you have 20-25 people in the office on call(s) at the same time, you might want to watch top at the command line.

Let us know if you see high %sy when folks complain.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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