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The A8A-series PCI cards from Digium are scalable to up to eight connections. Interchange FXO and FXS modules, as either two quad-port modules or up to four single-port modules. The Digium 1A8A01F PCI card is compatible with Asterisk, allowing connectivity for analog phones, or connect an analog PBX to a VoIP service. Carrier-grade echo cancellation gives this base PCI card enhanced audio.
