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 <[EMAIL PROTECTED]> 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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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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