Your source for the most up-to-date terms, definitions, and acronyms for and about internet service providers.
Search for an ISP term
FXS
Last modified: Monday, February 28, 2005
Acronym for Foreign Exchange Station.
FXS, or Foreign Exchange Station, is the interface on a
VoIPdevice for connecting
directly to phones, faxes, and CO ports on a
PBX or key telephone
systems.