Tuesday, November 23, 2010

Building a T1/E1 Loopback Connector

Use a single RJ45 connector and two 4-in (10-cm) wires. Connect wire 1 from pin 1 to pin 4, and connect wire 2 from pin 2 to pin 5 of the RJ45 connector.

1 comment:

  1. One end plugs into the demarc and the other connects to the T1/E1 port. Remove the loopback plug and reconnect the CAT 5 cable to the T1/E1 port.