Chapter 13. Testing and Troubleshooting
61204011L1-1
DSU IV ESP User Manual
13-11
Loop Only (RT)
The
L
OOP
O
NLY
(RT) test allows the loop interface and a major
portion of the DTE interface for the local DSU IV ESP to be tested
from the remote site over the actual communication circuit. Figure
13-6 illustrates the loopback point and the signal paths for this test.
Figure 13-6. Loop Only Test
Test Purpose
The
L
OOP
O
NLY
test is used to provide a loopback for network tests.
Interpreting Test Results
The
L
OOP
O
NLY
test is used for the purpose of looping the DDS
circuit back to the telco. No test results are available from the local
DSU IV ESP.
LOCAL
DSU/CSU
TELCO
DTE
Interface
NET Rx
NET Tx
DTE Rx
DTE Tx
Summary of Contents for DSU IV ESP
Page 54: ...Chapter 4 Applications 4 8 DSU IV ESP User Manual 61204011L1 1...
Page 80: ...Chapter 8 Configuring Test Options 8 4 DSU IV ESP User Manual 61204011L1 1...
Page 92: ...Chapter 9 Configuring Dial Options 9 12 DSU IV ESP User Manual 61204011L1 1...
Page 104: ...Chapter 11 Configuring Unit Utilities 11 6 DSU IV ESP User Manual 61204011L1 1...
Page 108: ...Chapter 12 Activating Dial Functions 12 4 DSU IV User Manual 61204011L1 1...
Page 134: ...Chapter 14 Viewing Status Information 14 6 DSU IV ESP User Manual 61204011L1 1...
Page 140: ...Appendix A Pinouts A 6 DSU IV ESP User Manual 61204011L1 1...
Page 152: ...Appendix B AT Commands B 12 DSU IV ESP User Manual 61204011L1 1...
Page 168: ...Appendix D Configuration Profiles D 4 DSU IV ESP User Manual 61204011L1 1...
Page 172: ...Appendix E DSU to DSU Tail Circuit E 4 DSU IV ESP User Manual 61204011L1 1...
Page 176: ...Appendix F Specifications Summary F 4 DSU IV ESP User Manual 61204011L1 1...
Page 190: ...Appendix H Glossary H 10 DSU IV ESP User Manual 61204011L1 1...
Page 194: ...Index Index 4 DSU IV ESP User Manual 61204011L1 1...
