Dte Interface Loopbacks; Dte Loopback; Figure 1-4. Network Loopback Tests; Figure 1-5. Dte Interface Loopback - ADTRAN TSU ACE Manual

Data Loopback
Loops back all active DS0s and inserts idle code into unoccu-
pied DS0s.

DTE Interface Loopbacks

The Nx56K/64K serial interface offers a DTE loopback. See Figure 1-
5.

DTE Loopback

Loops all data from the DTE back towards the DTE. This loopback
may be initiated by using front panel or T-Watch commands. The
DTE (or the external test equipment) must provide a test pattern in or-
der to check the DTE interface.
61200295L1-20

Figure 1-4. Network Loopback Tests

Figure 1-5. DTE Interface Loopback

TSU ACE User Manual
Chapter 1. Introduction
1-9