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
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“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.”
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