Apparently I didn't do the first test correctly where I said I made sure I had only two cards, each on their own IRQ and still got artifacts. When I repeated the test today, with both cards on their own IRQ, I got no artifacts at all, after shuffeling the cards around for a bit I was able to get each of the 3 on their own IRQ, after 16 minutes of hold music, still no artifacts, so its safe to say my problem was a shared IRQ.. The only other two things that are different are that I switched to the SVN trunk version of Zaptel and recompiled my kernel a few times.
My apologies to anyone who's time I wasted, thank you for looking.. Linux phonesys 2.6.16-rc2-mm1 #1 PREEMPT Wed Feb 8 11:09:28 CST 2006 x86_64 AMD Sempron(tm) Processor 3000+ AuthenticAMD GNU/Linux Zaptel Version: SVN-trunk-r941M Echo Canceller: MG2 CPU0 0: 1183747 IO-APIC-edge timer 8: 0 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 177: 56255 IO-APIC-level eth0 185: 5382 IO-APIC-level libata, NVidia CK8S 193: 0 IO-APIC-level ehci_hcd:usb1 201: 0 IO-APIC-level ohci_hcd:usb2 209: 0 IO-APIC-level ohci_hcd:usb3 217: 1170531 IO-APIC-level wctdm 225: 1169188 IO-APIC-level wctdm 233: 1167705 IO-APIC-level wctdm NMI: 195 LOC: 1183483 ERR: 0 MIS: 0 -- Regards, Gerard Saraber Network Admin, Rarcoa, Inc. (630) 654-2580 x11 [EMAIL PROTECTED] _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users