*In this world of data theft and other data mining apps free VoIP calling isn't an option for many and ads distract many users. People are slowly moving towards the web 3 solutions to gain full control of anonymous appearance in the web. BBP has made some ground breaking features available to the web 3 world.
The world's first blockchain Intergrated international calling system and where the users will get cheap rates such as 0.02 $ calling rate which the traditional carrier is 0.08$ (for US numbers). Each used also get a permanent US number. The users also get the opportunity to select the area code. No hidden cost. Every user can start testing this feature from their windows / Linux & also mac computer with less than 1$ loading in BBP crypto. The developers said their physical phone also could be used with simple configuration & ready for purchase. 
I do personally like their motive because they donate 10% of all the mined coins through their Dao, they have their own blockchain and no one has control over the whole blockchain! Even the team has to mine or buy BBP to do stuff.
This could be a great solution for small business who wants phone system for their customer support.