(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)