Seeking VoIP Information
In my house there are 4 apartments, now all sharing a single fiber line (I may get a second dedicated fiber line for my forthcoming sites if/when necessary). I still have my old DSL line and landline phone, but I need to cancel or replace it ASAP with a cheap mobile phone with a pay-as-you-go SIM card - or a VoIP phone line (Voice Over Internet Protocol), just as I'd considered it around 2002-2003. As there are 4 apartments it would be nice if each place had their own VoIP line too.
Since I have no direct experience I wonder if anyone has experience, recommendations, and/or information to share regarding VoIP phones, good, bad, or ugly.
Huge thanks in advance.