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Ivan Babanov ivan.babanov at gmail.comHello Harald! Today I was able to get hardware working. At least L2 link established and I see OML/NM messages. Files are attached. Briefly the problem was with ports connections. I did not expected that quad-port card requires all ports to be connected. Everything started to work after I placed dummy loopback connectors to unused ports 3 and 4. After it I was able to check physical link with e1-prbs-test and was able to communicate with BTS. Thank you Babanov Ivan пн, 12 окт. 2020 г. в 12:20, Harald Welte <laforge at gnumonks.org>: > Dear 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/ > > ============================================================================ > "Privacy in residential applications is a desirable marketing option." > (ETSI EN 300 175-7 Ch. > A6) > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20201013/0ba242d8/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: OML.log Type: application/octet-stream Size: 1320 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20201013/0ba242d8/attachment.obj> -------------- next part -------------- A non-text attachment was scrubbed... Name: 2020005-insite.pcap Type: application/octet-stream Size: 35382 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20201013/0ba242d8/attachment-0001.obj>