CTC Union ETU-01A, Installation And Operation Manual

Page: 98 / 144

Chapter 5. Loop Back and BERT Testing
92
November 2001
5.3 USER Activated Loop Back.
The
ETU-01A
supports the following types of test loop backs.
E1 line local analog loop back.
E1 line local digital loop back.
E1 line local payload loop back.
E1 line remote analog loop back.
E1 line remote digital loop back.
Data Port local analog loop back.
Data Port local digital loop back.
Data Port V.54 remote loop back.
The user activated loop back functions are accessed from the
LOOPBACK PARAMETER menu on the front panel LCD,
through the Test Function Parameter => Loop Back Test menu via
the console port terminal or with set commands issued by an
SNMP management workstation. The available test functions are
described in the following pages.