(PoP) A site where there exists a collection of telecommunicATions equipment, usually modems, digital leased lines and multi-protocol routers. An {Internet access provider} may operATe several PoPs distributed throughout their area of operATion to increase the chance thAT their subscribers will be able to reach one with a local telephone call. The alternATive is for them to use virtual PoPs (virtual points of presence) via some third party. (1994-12-13)