#SH RUN » loopback http://sh-run.com Tue, 27 Mar 2012 14:30:04 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 How to make a T1 loopback http://sh-run.com/2009/06/04/how-to-make-a-t1-loopback/ http://sh-run.com/2009/06/04/how-to-make-a-t1-loopback/#comments Thu, 04 Jun 2009 14:46:07 +0000 Bill http://sh-run.com/?p=29 Sometimes you need a quick and easy way to test a T1 connection on a piece of equipment.  For example, you want to make sure that the T1 WIC on your router is working.

To construct a loopback plug, simply take a single RJ45 plug and connect pin 1 to 4 and pin 2 to 5.

]]> http://sh-run.com/2009/06/04/how-to-make-a-t1-loopback/feed/ 0