The 1A4B03F belong to Digium family of A4 Series. This card can be installed in server PCI-Express slot. This card has built in Echo Cancellation
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|Form Factor||Half Length|
|Voltage Requirements||1x Express|
|Voice Signaling Methods||ISDN, PRI, Loop Start, Kewl Start|
Use your POTS (PSTN) lines with Asterisk server. Digium is among top three brands who make cards meant to work with asterisk. Unlike many low price cards with fake driver it uses system resource with proper drivers.
Digium 1A4B03F 4 FXO Port PCI-E Card Quick Specs:
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