Migrating Skype for Business Server 2015 to Teams

Question

Hello

We are going to migrate from Skype for Business Server 2015 to Teams soon
Our Company is in the military industry so we need to open firewall on servers for each network port.
We are planning to install Skype for Business Online Windows PowerShell Module and Skype for Business Server Administrative tools on a new server that have Internet connection to Office 365 and open remote PS on FW port TCP/5986 for HTPPS to Office 365 and the Skype for Business Front End and Edge Server
My questions is what other FW ports do we need to open from the new server we are going to install to Skype Edge and Front End server to be able to connect to Office 365 and move users to Teams?
We are running Skype for Business Server 2015 Standalone server with one Front end Server and one Edge Server

The last question i have is about the Meeting Migration Service for Teams.
We are going to change our primary sip addresses when we are migrating to teams from @microsoft.com to @lync.com. Will the Meeting Migration Service for Teams be able to migrate the correct meeting URL to Teams or do we need to reschedule all meetings again in Teams.

Morten Holst

Answer 1

Hi mortenholst-7874,

About the firewall consideration, you could refer to https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide#skype-for-business-online-and-microsoft-teams.

If you change the SIP address for the meeting organizer, either SIP username or SIP domain, MMS won’t update meetings. Organizer needs to reschedule meetings. For more details, please refer to this article:
https://learn.microsoft.com/en-us/skypeforbusiness/audio-conferencing-in-office-365/setting-up-the-meeting-migration-service-mms#updating-meetings-when-a-users-audio-conferencing-settings-change.