Loop Only (Rt); Test Purpose; Figure 4-7. Loop Only Test - ADTRAN DSU III TDM Manual

Loop Only (RT)

The L O
OOP NLY
the DTE interface for the local DSU III TDM to be tested from the remote
site over the actual communication circuit. Figure 4-7 illustrates the loop-
back point and the signal paths for this test.

Test Purpose

The L O
OOP NLY
61200063L1-20
(RT) test allows the loop interface and a major portion of
LOCAL TDM
Tx Tx
Rx Rx
Tx
Rx
Tx
Rx
Tx
Rx
test is used to provide a loopback for network tests.
DSU III TDM User Manual
Chapter 4. Testing and Troubleshooting
Tx
Rx

Figure 4-7. Loop Only Test

TELCO
4-9