Can you translate?
Google does it free of charge
It takes 2 to make a call
If the call remains within the same network its a wash let's say they're both Verizon, Verizon will not bill Verizon but if it's Verizon calling AT&T AT&T bills Verizon for call termination and by law Verizon can't decide AT&T is charging to much so they'll restrict the call, and Verizon needs to foot the bill
Need more?