[asterisk-users] Change by Deutsche Telekom end of februar. Can someone help me?

[Luca Bertoncello]

Hi list!

I received a letter from Deutsche Telekom where they say me, that I need 
to change "something" on my router until 28.02.2021, otherwise I cannot 
phone anymore.
Since I use Asterisk and I don't have a router, I'm not sure what I need 
to do...
In the letter there is an URL to "explain" how to change the 
configuration if I use a VoIP-phone, but they only say, that I don't 
have to use Port 5060, but Port 0...

Surely there are in this list someone other using Deutsche Telekom... 
Does someone of them understand what I should change in the Asterisk 
configuration?

Thanks a lot
Luca Bertoncello
(lucabert at lucabert.de)