Sangoma A200 Series of Analog Voice Cards deliver superior audio quality in a compact 2U Card that expands from two to six ports using a single interface slot. For optimum echo-cancelled voice quality and enhancement choose the A200D/A200DE Models with DSP daughterboard Hardware Echo Canceller. One DSP echo canceller on the A200D/A200DE Base Card will support Telco-grade hardware echo cancellation on all channels up to the Card"s maximum configuration in 6 ports with no additional CPU load. Sangoma Cards guarantee error-free faxing and click-free audio on analog-digital links. FeaturesFrom 2 to 6 ports supported, mixing FXO and FXS interfaces, as requiredSupport for the Asterisk®;, FreeSWITCH®, YateTM, CallWeaverTM, PBX/IVR projects, as well as other Open Source and proprietary PBX/Switch/IVR/VoIP gateway applicationsDimensions: 2U Form factor: 120 mm x 55 mm for use in restricted chassisShort 2U compatible mounting clips available for installation in 2U rack-mount servers32 bit bus master DMA data exchanges across Asterisk® PCI interface at 132Mbytes/sec for minimum host processor interventionAutosense compatibility with 5 V and 3.3 V Asterisk® PCI bussesFully Asterisk® PCI 2.2 and Asterisk® PCI Express compliant, compatible with all commercially available motherboards, proper sharing of Asterisk® PCI interrupts Wiring ConnectionsThe A200 and RemoraTM Cards incorporate 4-pin RJ11/4 narrow jacks, such as those used in telephone handsetsEach Sangoma A200 Card is shipped with four 2 m cables terminating in a narrow RJ11/4 plug at one end and a telephone-standard RJ11/6 plug at the other Operating SystemsWindows® 2003, Windows® XP, Windows® Server 2008, Windows® Vista, Windows® 7Linux (all versions, releases and distributions from 1.0 up)