Skype ports - which ones can be closed?

Question

Skype

Good evening.
As you know, Skype opens a lot of ports when working. I hope everyone understands why and knows the policy of microsoft. The essence of the question is this: what ports can (theoretically) be closed so that Skype continues to function normally?
Here is an example screen with ports: prntscr.com/ebq1kx

Answer 1

If it bakes, you can close everything except 10896, or whatever you have in the settings of Skype itself. But be prepared for slowdowns during video calls.