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Diagnostics
Chapter 14
Diagnostics
COMMUNICATION DIAGNOSTICS
Communication diagnostic tests verify that the UTA220, the DTE, the NT1, the central office switch, and the remote unit are operating correctly. These tests can help determine the source of a fault down to a particular element responsible for it.
GLOBAL TESTS
Communication tests are initiated and terminated via the front panel under the GLOBAL TEST submenu of the DIAGNOSTIC OPTIONS menu. The following sections describe each of the diagnostic tests, when to use them, and what it means if they fail.
2B+D Loopback
This test sets the UTA220 up for a data integrity test that is run from the central office switch (Figure
Figure 14-1. 2B+D Terminal Loopback Test
This is not a complete loopback; it is an echoing loopback where the
UTA220/UTA220k |