VOIP Adapter causes Kernel Panic

Have Mikrotik ver 2..8.26 just setting up, plugging in ATA adapter Grandstream Handy Tone 486, it has WAN and LAN ports. If we plug into WAN port the internet the phone works. If we plug the ATA into the hub connected to the router, it doesnt work. We have done this from a clean install and firewall rules set as per the example howto setup a DSL home network, nothing else.

ON examining /ip firewall connection print causes the following

[admin@MikroTik] > Oops: 0000
CPU: 0
EIP: 0010:[] Tainted: P
EFLAGS: 00010286
eax: 00000000 ebx: c6903c80 ecx: c59f6cc0 edx: c8888000
esi: c6903c80 edi: c5a09739 ebp: 0000000d esp: c6105f3c
ds: 0018 es:0018 ss: 0018
Process netstats (pid: 255, stackpage=c6105000)
Stack - loads of numbers

Call Trace - ditto

Code 83 78 18 00 74 39 83 7e 34 00 74 18 a1 84 fb 28 c0 8b 56 3c
<0>Kernel panic: Aiee, killing interrupt handler!
In interuppt handler - not syncing

If we reboot and remove ATA, printing connections does not cause the kernel panic.

2 questions, why doesnt the ATA work and whats causing the kernel panic?

It may be that the ATA built into the 486 is only present on the WAN side of the device. That’s the case with the Sipura SPA-2100 that I use.

BUMP


Nobody else outthere ?

Maybe a IRQ and/or adressing conflict?

Please make the support output file after the router crashes and send it to support@mikrotik.com
We will check then where could be the problem.