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A '''point-of-presence''' ('''POP''') is an artificial [[demarcation point]] or [[network interface|interface]] point between communications entities.
==Telephone systems==
In the [[USA]], this term became important during the [[Modification of Final Judgment|court-ordered breakup of the Bell Telephone system]]. A point of presence was a location where a long-distance carrier could terminate services and provide connections into a local telephone network.
==Internet==
An [[Internet]] point of presence is an access point to the Internet. It is a physical location that houses [[server (computing)|server]]s, [[router]]s, [[Asynchronous_Transfer_Mode|ATM]] switches and digital/analog call [[aggregator]]s. It may be either part of the facilities of a telecommunications provider that the [[Internet service provider]] (ISP) rents or a location separate from the telecommunications provider. ISPs typically have multiple POPs, sometimes numbering in the thousands. POPs are also located in [[Internet exchange point]]s and [[colocation centre]]s.
==Telephone systems==
In the [[USA]], this term became important during the [[Modification of Final Judgment|court-ordered breakup of the Bell Telephone system]]. A point of presence was a location where a long-distance carrier could terminate services and provide connections into a local telephone network.
==Internet==
An [[Internet]] point of presence is an access point to the Internet. It is a physical location that houses [[server (computing)|server]]s, [[router]]s, [[Asynchronous_Transfer_Mode|ATM]] switches and digital/analog call [[aggregator]]s. It may be either part of the facilities of a telecommunications provider that the [[Internet service provider]] (ISP) rents or a location separate from the telecommunications provider. ISPs typically have multiple POPs, sometimes numbering in the thousands. POPs are also located in [[Internet exchange point]]s and [[colocation centre]]s.