layer 1 debugging

[Eric Cathelinaud]

Thanks a lot for this layer 1 debugging tutorial. It helped me a lot since i
was thinking I did something wrong with mISDN. I checked the step 3 and find
out that my ISDN card was working fine.
Then I tried to invert my twinax plugs and it worked. I think there is a
mistake in the wiki.
It's written in http://bs11-abis.gnumonks.org/trac/wiki/BS11_Configuration :
- left Y01 PCM in (from BSC): RJ45 pin 4,5
- Y02 PCM out (to BSC): RJ45 pin 1,2

but for me it works with :
Y01 PCM : RJ45 pin 1,2 (orange / white orange for a straight cable)
Y02 PCM : RJ45 pin 4,5 (blue / white blue for a straight cable)


I can now see the network on my mobile phone thanks a lot.

Best regards
Eric Cathelinaud

2009/6/3 Harald Welte <laforge at gnumonks.org>

> thanks a lot, andreas.
>
> I hope this helps people debugging their physical connection, cable
> pin-outs,
> etc.
>
> Will that patch for the mISDN kernel driver be pushed for mainline
> (2.6.31)?
>
> It might also help if we had a patch against 2.6.29 that people can apply,
> rather than building from the mISDN git tree.
>
> --
> - 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)
>
>
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