Loopback Jack fault isolation procedures

Last Updated : Apr 28, 2014 |
This section describes the possible DS1 configurations in which the loopback jack is used. These configurations are when:

  • The DS1 provider includes a Smart Jack.

  • No Smart Jack is provided at all.

  • A site uses fiber multiplexers.

These configurations are separated into Configuring DS1 using a Smart Jack and Configuring DS1 without a Smart Jack.