> Or is there more middleware required to connect the two VoIP?
You need an address of record to translate 111222333 to an actual deliverable location, like a PBX. You can do without it in a software solution, but in the age of NAT having a TURN server is highly advised.
> I don't like it requiring an account.
Remember the value proposition here is for kids calling trusted contacts. You could absolutely and easily build your own VoIP network with Asterisk etc.
You need an address of record to translate 111222333 to an actual deliverable location, like a PBX. You can do without it in a software solution, but in the age of NAT having a TURN server is highly advised.
> I don't like it requiring an account.
Remember the value proposition here is for kids calling trusted contacts. You could absolutely and easily build your own VoIP network with Asterisk etc.