Teams VOIP signalling protocol and TCP port?

[danfeng]

I understand MS teams is using HTTP/HTTPS TCP port 80/443 for call setup, and RTP/UDP for data plane,

My question is how can I apply QoS for MS Teams signalling traffics? (in another word, How can I capture/classify the HTTP/HTTPs traffics only for MS Teams call setup, excluding other normal web browsing traffics)??

Plane	Media Traffic Type	User source port	Destination port	Protocol
Data	Voice	UDP 50000-50019	UDP 3478-3481	RTP over UDP
Data	Video	UDP 50020-50039	UDP 3478-3481	RTP over UDP
Data	Screen Sharing	UDP 50040-50059	UDP 3478-3481	RTP over UDP
Signalling			TCP 80 and 443	HTTP/HTTPS

[danfeng]

Plane	Media Traffic Type	User source port	Destination port	Protocol
Data	Voice	UDP 50000-50019	UDP 3478-3481	RTP over UDP
Data	Video	UDP 50020-50039	UDP 3478-3481	RTP over UDP
Data	Screen Sharing	UDP 50040-50059	UDP 3478-3481	RTP over UDP
Signalling			TCP 80 and 443	HTTP/HTTPS

[#3 · Accepted solution]

Hi @danfeng

See here:

https://docs.microsoft.com/en-us/microsoftteams/qos-in-teams

Best of luck on your implementation. Thanks for reaching out.

Best, Chris

[#4]

@danfeng 

To add to @Christopher Hoard response of QoS, adding QoS to the signalling portion of the call wouldn't change the call quality or performance of the call as that's just part of the initial setup.  I'd concentrate on just QoS on the media portions.

If you do still want to put QoS into place on the signalling portion, you can explicitly define the source/targets as well, listed on the Office365 URLs and IPs page https://docs.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-world...

[#5]

@danfeng 

Hi, I see you mention high UDP ports for Teams traffic.  Despite extensive searches, I cannot find a Microsoft document that references high UDP or TCP ports for the correct functioning of Teams.  Can you point me to the Microsoft source for these high UDP ports please?

I am referencing:  https://docs.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-world...

[#6]

@PaulDurham 

Probably referring to the recommended initial port ranges for policy based QoS

Implement Quality of Service (QoS) in Microsoft Teams clients - Microsoft Teams | Microsoft Docs

Best, Chris