I am using a Pico ITX box with no internal cards (just a Grandstream FXO gateway). The system works just fine for my office of 15 but there are occasional moments of choppiness. Code: dahdi_test -v Best: 99.960 -- Worst: 99.568 -- Average: 99.923358, Difference: 100.002990 Since I have nothing installed in the box I have no IRQ conflicts. I turned the serial ports off in bios. Does anyone have any troubleshooting tips or advice?