How can you get Skype for Business client to mark traffic for CoS/QoS ?

Can Skype for Business client tag Class of Service bits for use by network switches
and routers so that those markings can then be use for QoS? We are using Skype
for Business 2015 on Windows 7. I'm not certain what we're using on Mac and
Windows 10.

Or is it normally the case that the network devices mark and classify the traffic
rather than the application/Windows/PC?
amigan_99Network EngineerAsked:
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Adam BrownSr Solutions ArchitectCommented:
QoS CoS tags are added by Network devices based on traffic type, VLAN, or other network level identifying methods. Skype for Business doesn't manage that.
amigan_99Network EngineerAuthor Commented:
I found an article - thought I'd seen this somewhere. In this article they talk about setting up two GPOs to accommodate QoS.

But this is referencing Skype for Business servers. We're using Skype for Business Online O365.
QoS is assigned at the network layers 2/3 might just be 2, during encapsulation.

you can probably set the program and/or processes  with a higher priority on the windows system, not sure about Mac.
why would you want it to have a higher priority, it already slows down machines at start up.
what you going for if you don't mind me asking?
Your link to GPO is correct - they can be applied to the client side (further down the article). Packet captures will confirm that the traffic is being tagged.
Similar to:

Your network switches can apply their own tags however sometimes it is simpler to set them to honour existing tags.
Of course, once the traffic leaves your premises you cant guarantee any sort of QoS.

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amigan_99Network EngineerAuthor Commented:
Thanks you.
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