Foreign Exchange Service (telecommunications) - Foreign Exchange Station

In telephony, a Foreign exchange station (FXS), is a telephone interface that supplies battery power, provides dial tone, and generates ringing voltage. A device that connects to such an interface contains a foreign exchange office (FXO) interface and could be a standard analog telephone or a private branch exchange (PBX) to receive telephone service.

Any telephone exchange is an example of an FXS, as is the telephone jack on the wall, though the term is rarely applied except in connection with foreign exchange service.

An FXS interface utilizes an FXO protocol to detect when the terminating device (telephone) goes on-hook or off-hook, and can send and receive voice signals.

An FXS interface provides service at the "station" end of a foreign exchange line.

Read more about this topic:  Foreign Exchange Service (telecommunications)

Famous quotes containing the words foreign, exchange and/or station:

    There is the fear, common to all English-only speakers, that the chief purpose of foreign languages is to make fun of us. Otherwise, you know, why not just come out and say it?
    Barbara Ehrenreich (b. 1941)

    I live in my house as I live inside my skin: I know more beautiful, more ample, more sturdy and more picturesque skins: but it would seem to me unnatural to exchange them for mine.
    Primo Levi (1919–1987)

    When, in the course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume the powers of the earth, the separate and equal station to which the laws of nature and of nature’s God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.
    Thomas Jefferson (1743–1826)