In the early 1960s, Bell Systems was busy rolling out a new way for people to make phone calls.
https://www.wired.com/2015/05/master-designer-gave-area-code-parentheses/
In the early 1960s, Bell Systems was busy rolling out a new way for people to make phone calls.
https://www.wired.com/2015/05/master-designer-gave-area-code-parentheses/