RE: T1 crossover from WIC to WIC

From: Jay Hennigan (jay@xxxxxxxx)
Date: Thu Aug 01 2002 - 14:59:03 GMT-3


   
On Thu, 1 Aug 2002, Michael Snyder wrote:

> I researched this a few months back.
>
> >From what I remember.
>
> Two Wire T1 Wic's CANNOT be used back to back.
>
> Four Wire 56K Wic's can easily be used back to back.
>
> Half my lab has 56k Wic's. Works well.

I bet you're using the flat rollover cables as interconnects. T1 WICs
indeed can be used back-to-back, and they're all four-wire. You do need
to build a special crossover cable. An ethernet crossover won't work
and a Cisco rollover won't work.

1 - 4
2 - 5

4 - 1
5 - 2

are the correct pinnings. You will most likely need to make this cable
yourself, it isn't an easily found off-the-shelf item.

--
Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net
NetLojix Communications, Inc.  -  http://www.netlojix.com/
WestNet:  Connecting you to the planet.  805 884-6323


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