*astTECS Quad Span E1/T/J1 PCIe cards are high-performance, cost effective telephony cards available with carrier grade hardware echo cancellation. The cards provide the power to interconnect traditional telephony systems with emerging Voice-over IP (VoIP) technologies.
*astTECS Quad Span E1/T/J1 digital cards are designed to work with Open Source based VoIP platforms such as Asterisk® (e.g. PBX in a Flash®, FreePBX® Elastix®) & FreeSWITCH®. It supports industry standard telephony protocol families. Both line-side, trunk-side interfaces along with advanced call features are supported.