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

[BJ Weschke]

 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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