A telephone exchange or wire center service area is the geographic area served by equipment within a central office, and is the basic geographic unit of the North American telecommunications industry. Wire Center Boundaries are polygons that represent this geography in digital map form.
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A telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central office is the physical building used to house equipment including telephone switches. An exchange can also be used to refer to an area served by a particular switch, typically known as a wire center in the US. More narrowly, in some areas it can refer to the first three digits or NXX of the local number.
Coverage: US Unit Of Sale: US, State Updated: Semi-Annually Term: 1 Year
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