Specifications

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CHAPTER 12: Testing and Troubleshooting
The Remote Unit submenu allows a remotely installed DSU to be placed into
loopback. There are six test patterns to choose from, or “Data from the DTE”
may be selected.
Figure 12-10. V.54 RDL with Test Pattern.
Test Purpose
The test purpose is to test the local DSU, the DDS circuit, and the remote DSU.
Initiating
Follow the menu path outlined in Figure 12-11 to place a remote CSU/DSU MS
DBU into loopback.
Figure 12-11. Initiating a Remote Test.
After selecting Remote Unit from the menu, the following prompt is displayed
for entering the address for the remote unit:
Enter Test Unit
Address:XX
2=TEST
1=LOCAL UNIT
2=REMOTE UNIT
3=DBU CONNECTION
ENTER TEST UNIT
ADDRESS:0
1=2047 PATTERN
2=511 PATTERN
3=STRESS PTRN #1
4=STRESS PTRN #2
5=STRESS PTRN #3
6=STRESS PTRN #4
7=DATA FROM DTE
DTE Rx
DTE Tx
NET Rx
NET Tx
LOCAL
DSU/CSU
NET Rx
NET Tx
DTE Rx
DTE Tx
Error
Inject
Test Pattern
Generator
Error
Clear
Test Pattern
Detector
TELCO
REMOTE
DSU/CSU
DTE
Local Unit Initiates Test
Rx
Tx