In telephony, especially in North America, an overlay plan is the practice of introducing a new area code by applying it onto a geographic area that is already occupied by one or more existing area codes, resulting in two (or more) area codes serving the same area.
Read more about Overlay Plan: Methodology, Types of Overlays, Number Pool Management
Famous quotes containing the word plan:
“I began revolution with 82 men. If I had [to] do it again, I do it with 10 or 15 and absolute faith. It does not matter how small you are if you have faith and plan of action.”
—Fidel Castro (b. 1926)