Reading all kind of CBDC propaganda and those who are clearly against CBDC I absolutely can't get something real from that stuff.
Every single feature/option/whatever of CBDC could be implemented using current bank card/account system without single problem. Everything, from any restrictions to programming buying power or whatever. Every single thing that somehow connected to CBDC in everything written about it and posed as threat/advantage by whatever side is a question of a few minutes scripting in bank computers over current card/account system.
So, what is the real point of pushing CBDC crap by TPTB? Money laundering? Creatiing a base for some other narrative unknown yet, like kind of cyber threat fearmongering? What else? Anybody?
You can have conference calls on a phone line.
Only if your station support that. And conference calls are just connecting several lines of several users together instead of lines of two users, nothing close to the routed packet transmission at all.
Internet is like you already established a conference call with all existing phone users and agree with them on the keywords to use to talk on certain topics to certain people. Internet is more like ham radio than phone line, but divided into regions with repeaters to retranslate packets destined to another regions.