Hi, In my system, I can see : # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 .... 16: 22252 22220 22209 22211 IO-APIC-fasteoi uhci_hcd:usb1, b4xxp I'm quite new with this topic, so if someone has experience about this, ... Does the line above means my HFC board is sharing IRQ16 with another device (specifically uhci_hcd:usb1) ? Regards -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20100508/85a15eb3/attachment.htm