AX-400P FXO/FXS Interface Card
AX-400P is a TDM400P compatible PCI card that supports up to four FXO and FXS combination interfaces. Using AX-400P series PCI card, open source Asterisk PBX and stand alone PC, you can create your own SOHO telephony solution which includes all the sophisticated features of traditional PBX, and extend features such as voicemail in IP PBX.
You can use AX-400P with standard Zaptel device driver and Asterisk source code without modify any code. The FXO and FXS module are interchangeable to suit various requirements.