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Digium 4 Port FXS
$399.00FXS Analog Card
4 – Port Analog Telephony Card
The 4-port FXS Analog Card supports up to four (4) connections per card in the Asterisk system. The modular nature of the cards allows you to mix and match between line (FXO) and station (FXS) interfaces, giving the exact port configuration required.
Primarily, the services provided by an FXS interface to any subscriber device are: * Dial Tone * Battery Current * Ring Voltage Learn More...
FXS is the ‘Foreign eXchange Subscriber’ interface (the plug on the wall) delivers analog telephony services to your home by local phone companies through a circuit consisting of two copper wires; connected to the subscriber equipment (telephones, modems, and fax machines).