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Harald Welte laforge at gnumonks.orgDear Ivan,
On Mon, Oct 12, 2020 at 12:26:22AM +0300, Ivan Babanov wrote:
> I heard that it happens on some hardware with Digium cards, I'll try
> tomorrow to change PCI slot to avoid sharing one IRQ with USB
> devices, maybe disable USB at all. If it doesn't help, I'll try a new
> server with different HW.
I'm sorry but I think you are looking at the wrong level. I doubt that
the hardware is the problem.
If you are worried about the hardware/OS/drivers, just use a loopback E1
cable between two ports and run e1-prbs-test (from osmo-e1d/contrib) on
both sides to see if you can communicate between two ports. If that
works, you can exclude any problems related to hardware or drivers.
If you have connceted span 1 + 2 via loopback, start
in one shell:
e1-prbs-test /dev/dahdi/chan/001
in another shell:
e1-prbs-test /dev/dahdi/chan/002
and check the stdout to see if they find sync in both direction.
This program sends pseudo-random bit sequences over every timeslot and
checks that the correct PRBS sequence arrives on the other side,
bidirectionally.
Regards,
Harald
--
- Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/
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