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RE: (ASCEND) T1 PRI pinouts - Are the E1 pinout the same?

Are the E1 pinout the same?

David S. Misell
david.misell@bt.com
dsm@btmail.co.uk
david.misell@virgin.net
0410-380044
*7 146 6171

>-----Original Message-----
>From:	Lee Nelson [SMTP:lwn@postalzone.com]
>Sent:	21 August 1998 22:23
>To:	Steve LaDuke
>Cc:	ascend-users@bungi.com
>Subject:	Re: (ASCEND) T1 PRI pinouts
>
>
>All T-1's use two pairs: 1-2 and 4-5.  1-2 are Transmit and 4-5 are
>receive.  It doesn't matter if which if cross the pairs (2-1 instead of
>1-2, 5-4 instead of 4-5), but you won't have any luck if you cross beteen
>the pairs (1-4, 2-5).  Anyways, here's a summary: 
>
>T-1:
>1&2 are Tx
>4&5 are Rx
>
>BTW, here are some other common pinouts:
>
>10bT, 100bTX:
>1&2 are Tx
>3&6 are Rx
>
>DDS (56k):
>1&2 are Tx
>7&8 are Rx
>
>The pins on the plug are numbered left to right if you hold the plug with
>the tab on the top and pins pointing down.  A jack would be right to left
>if you look at the front of it with the slot for the tab at the top and
>the pins accross the bottom:
>
>Plug (front view, cord goes away from you):
>        ___
>________| |_______
>|                 |
>|                 |
>|-+-+-+-+-+-+-+-+-|
>  1 2 3 4 5 6 7 8
>
>Socket (front view, where the plug is inserted):
>        ___
>       |   |
>______/     \______
>|                 |
>|                 |
>|-/-/-/-/-/-/-/-/-|
>  8 7 6 5 4 3 2 1
>
>
>Hope that helps.
>
>On Fri, 21 Aug 1998, Steve LaDuke wrote:
>
>> I am installing a T1 jack for my [new] PRI line.
>> 
>> Can someone please tell me the pinouts?
>> 
>> Thank you for your time,
>> Steve LaDuke.
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>
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