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Asterisk Card with 4 FXO Ports,PCI Connector,For Elastix,Freepbx,Trixbox,Askozia, is imported from chinese manufacturer who makes Card for famous brands like Atcom, Zycoo and Synway.
It has a warranty of 1 year. You can build and resell a cheap phone system with Free and Opensource software like Asterisk.
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