Harris Corporation Constellation™
LOOPBACK TESTING
C HAPTER
5
LOOPBACK TESTING
Introduction
The following loopback tests can be performed through the Keypad.
• Local electronic IF loopback for fault isolation
• T1 local and remote loopback tests
• DS3 local and remote loopback tests
• OC3 local and remote loopback tests
The following tributary BER test can be performed through the Keypad.
• T1 loopback with a built-in pseudorandom generator/receiver
Precautions
A DS1 or DS3 loopback test disrupts traffic only on
that tributary under test.
An IF or OC3 loopback test disrupts traffic.
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