SSL from GoDaddy

Just use a single domain Let's Encrypt certificate until then. It's free. With FS PBX you don't need a to have a certificate that covers each tenant domain. Everyone will be logging in using your main PBX domain and their email.

 
Oh, that changes the story. You can buy a single domain certificate. Your phones should be registered to the same domain. Usually, your main DNS record points to your server. Only if you prefer dual registration in the future, when you have 2 servers, and if your phones support it, then you would need a wildcard certificate. Changing certificates is not hard, but does require a FreeSwitch restart.
Someone recently told me they generate their own Certificate Authority and certificate, and just upload it to the phones as trusted. It works just as well but requires a bit more work in the beginning. I think we are going to see more people leaning towards this way since the commercial certificates now have to be renewed every 7 months. We might even add a tutorial for this to our docs in the future.
 
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