Loopback Jack fault isolation procedures

Last Updated : Apr 28, 2014 |
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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.