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

[John Novack]

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Jeronimo Romero 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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>>     
>
>
>