Teams Client source ports in different scenarios: call to PSTN via Direct Routing VS audiomeeting

New Contributor





I would like to describe the following scenario to better understand which Teams client ports are used.


1) I make a call via PSTN via DR where the MBP is not configured (all audio traffic is directed to the cloud on the MediaProcessor) and UDP traffic is ok --> Are Teams client source ports between 50000-50019 ?

2) Other scenario: I configured Tenant changing audio port from 50000-50019 to 40000-40019


I make an audiomeeting with 3 client --> In this conf audiomeeting traffic media comes from 40000-40019 , correct ? Now I make another PSTN call via Direct Routing --> what about source port media traffic from PC client? Still on ports 50000-50019 ?

2 Replies
best response confirmed by BGuido (New Contributor)

The Network Configuration mentioned in the attached screenshot is specifically for the Microsoft Teams Meeting. For any PSTN calls the port would always be 50000-50019 for Media and for SIP Signaling it would 1024 - 65535. This is irrespective or Media Bypass or Media Flow through.

Reference Article

With Regards,
Satish Upadhyaya