[asterisk-users] DB9 e1 to RJ45 pinout

[Alban]

I had some troubles once with db9 and RJ45... It was due to an impedance pb. 
As I remember, you have to change the impedance in the adaptor (with adding 
some R-C)... I haven't done it, and my line was half-working (sometimes yes, 
sometimes not...).
So, I suggest you to check if the impedance are the same...

Le Vendredi 24 Novembre 2006 16:21, Erick Perez a écrit :
> I forgot to mention that in the db9 part I guess pins 2-3(tx) and
> 6-8(rx) are used. I'm sorry I dont recall ground.
>
> On 11/24/06, Erick Perez <eaperezh at gmail.com> wrote:
> > from my aging memory.....
> > Standard E1 pinouts for RJ45 jack are 1-2 (TX) and 4-5(RX). So, trim
> > DB9 and make standard RJ45 jack.
> >
> > Also,
> > http://www.pccables.com/01910.htm
> > http://www.zytrax.com/tech/layer_1/cables/tech_rs232.htm#t1
> >
> > On 11/24/06, Giordano Grandis <g.grandis at invidea.it> wrote:
> > > Hi all,
> > > anyone known how can i create an adapter from a DB9 port of a E1 to an
> > > RJ45 plug?
> > > My telco left active the db9 port, but on my te407p card i have rj45
> > > connection.
> > >
> > > Anyone can help me pls ?
> > >
> > > Thanks in advance
> > >
> > >
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> > Erick Perez
> > Panama Sistemas
> > Integradores de Telefonia IP y Soluciones Para Centros de Datos
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