[asterisk-users] T1 cable for Digium T1/E1 Cards

[BJ Weschke]

 Correct. Because Ethernet cross-over cables are crossing over 1,2,3
and 6; no 1,2,4 and  5.

On 3/18/07, Jeronimo Romero <jromero at eusnetworks.com> wrote:
> So a regular cross over cable wouldn't work?
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of BJ Weschke
> Sent: Sunday, March 18, 2007 10:35 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] T1 cable for Digium T1/E1 Cards
>
>  Yes. At that point, you're looking for a T1 "cross-over".
>
>  The pinout is as follows:
>
> 1
>
> 4
>
> RX/Ring/- <-->TX/Ring/-
> 2
>
> 5
>
> RX/Tip/+ <-->TX/Tip/+
> 4
>
> 1
>
> TX/Ring/- <-->RX/Ring/-
> 5
>
> 2
>
> TX/Tip/+ <-->RX/Tip/+
> 3
>
> 3
>
> Shield/Return/Ground
> 6
>
> 6
>
> Shield/Return/Ground
>
> On 3/18/07, Jeronimo Romero <jromero at eusnetworks.com> wrote:
> > I assume that I would need to cross these pins over if I were going
> from
> > t1 card to t1 card. Is this correct?
> >
> > -----Original Message-----
> > From: asterisk-users-bounces at lists.digium.com
> > [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Tom
> > Sent: Sunday, March 18, 2007 7:17 PM
> > To: Asterisk Users Mailing List - Non-Commercial Discussion
> > Subject: Re: [asterisk-users] T1 cable for Digium T1/E1 Cards
> >
> > A common Cat5 straight through cable will work fine.
> >
> > T1s use 1 and 2 (rx tip and ring) and 4 and 5 (tx tip and ring) for
> > signals.
> >
> > A T1 loopback plug would be wired 1 to 4 and 2 to 5.
> >
> > They come in handy for testing T1 cards or for providing a hard loop
> > for the telco.
> >
> > Tom
> >
> > At 05:42 PM 3/18/2007, you wrote:
> > >Is there any technical difference between a T1 cable and a cat5e
> patch
> > >cable as far as using them with Digium T1/E1 cards? Can PRI circuits
> > >terminating at a smart jack connect successfully to Digium cards
> using
> > >straight through CAT5e cables? If so, are they using all of the pins
> in
> > >the cable?
> > >
> > >Thanks in advance
> > >_______________________________________________
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>
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