BN1E1 seems to have different layouts over the time.
 
i always jumper the cards to TE, so i use a crosslink cable for NT to TE.
 

Von: openbsc-bounces@lists.gnumonks.org [mailto:openbsc-bounces@lists.gnumonks.org] Im Auftrag von Eric Cathelinaud
Gesendet: Mittwoch, 10. Juni 2009 10:41
An: Harald Welte
Cc: openbsc@lists.gnumonks.org
Betreff: Re: layer 1 debugging

I tried to short the left and to invert the twinax plug (thus pluging them as in the wiki) and it works too. Then it could be a mistake in the jumper plan of BN1E1 cause they say that the left is "TE" and not "NT".
Anyone else dealing with a BN1E1 card to confirm?
 
Eric Cathelinaud

 
2009/6/9, Eric Cathelinaud <e.cathelinaud@googlemail.com>:
2009/6/9 Harald Welte <laforge@gnumonks.org>
Hi Eric,

On Tue, Jun 09, 2009 at 12:56:25PM +0200, Eric Cathelinaud wrote:
> 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 think that depends on the jumper configuration of your E1 card.  Did you
really put the jumpers in "NT Mode" configuration?
 
 
Yes I put NT Mode following the jumper plan (short pins on the right). My card is a Beronet BN1E1. I will try to short pins on the left and let you know if working as in wiki.


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

 
great!
--
- Harald Welte <laforge@gnumonks.org>           http://laforge.gnumonks.org/
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