PRI got event: HDLC Abort (6) on D-channel of span every 10 secs

Hi hua,
here it is:

user@pbx:~$ cat /proc/interrupts
CPU0 CPU1
0: 1288 1246 IO-APIC-edge timer
1: 2 0 IO-APIC-edge i8042
3: 6 3 IO-APIC-edge
7: 0 0 IO-APIC-edge parport0
8: 1 0 IO-APIC-edge rtc0
9: 0 0 IO-APIC-fasteoi acpi
12: 2 2 IO-APIC-edge i8042
16: 0 0 IO-APIC-fasteoi uhci_hcd:usb5
18: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
19: 0 0 IO-APIC-fasteoi uhci_hcd:usb3
20: 373420741 373426011 IO-APIC-fasteoi b4xxp
23: 0 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
26: 2194895 2207468 PCI-MSI-edge eth0-rx-0
27: 1731122 1731805 PCI-MSI-edge eth0-tx-0
28: 2 1 PCI-MSI-edge eth0
29: 349944 350115 PCI-MSI-edge ahci
NMI: 0 0 Non-maskable interrupts
LOC: 40700858 41811783 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 0 0 Performance monitoring interrupts
PND: 0 0 Performance pending work
RES: 26082 26104 Rescheduling interrupts
CAL: 152844 201755 Function call interrupts
TLB: 135699 137410 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 2489 2489 Machine check polls
ERR: 1
MIS: 0


If you need more, just ask me.

Thank you.

Giorgio