First-mile meaning

See last mile and EFM.
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More commonly referred to as the last mile and generally referring to the telco local loop, which is the link between the central office (CO) at the edge of the telco network and the user premises. In a broader contemporary context, the term applies to the physical connection between the edge of any service provider's network and the end user's premises. In practice, the first mile is often much longer than a mile. In the United States, UTP local loops are generally 12,000 feet or less, but often are as long as 18,000 feet. Passive optical network (PON) standards allow for local loops as long as 12 miles (20 km). Whether the first mile or the last mile, which is a matter of perspective, it is seldom exactly a mile. See also central office, local loop, and PON.
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