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.

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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/ ======================================================================== ==== "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)