12 inputs, 12 outputs, 8 microphone/line input channels

See http://andrew.triumf.ca/AG/vortex/ for some very useful configuration advice.

PCI card that offers echo cancellation of a microphone source (or mixer output) referenced to PC sound card output. The card seems only to take power from PCI bus and so does not put any processing demands on the PC. It comes with cables to connect it to the PC sound card (a pre-requisite); installation is very simple and requires no drivers or software, again reducing the complexity of the system.

I have tested this card in one of our nodes and neither local nor remote sites noticed any audible difference from that produced by our standard setup.