ADTRAN 1200063L1, Manual

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Chapter 4. Testing and Troubleshooting
4-20 DSU III TDM User Manual 61200063L1-20
REMOTE UNIT DIAGNOSTICS
The R
EMOTE
U
NIT
submenu allows a remotely installed DSU to be placed into
loopback. Establish a call before performing any remote diagnostics. See Table
4-2 for selections.
Test Patterns
The test selections with test patterns use the internal pattern generator of the
DSU III TDM to transmit and verify a test pattern over the DDS network; see
Figure 4-16 on page 4-21. The remote unit is placed in RDL automatically. The
DSU III TDM is capable of transmitting six test patterns with its built-in test
pattern generator. For more information on the test patterns see the section
DTE With Test Pattern on page 4-13.
Table 4-2. Remote Tests Selections
Front Panel Description
1=2047 PATTERN Standard 2047 random data pattern
2=511 PATTERN Standard 511 random data pattern
3=STRESS PTRN #1 DDS Stress Pattern #1
4=STRESS PTRN #2 DDS Stress Pattern #2
5=STRESS PTRN #3 DDS Stress Pattern #3
6=STRESS PTRN #4 DDS Stress Pattern #4
7=DATA FROM DTE Data from DTE
8=PORT RDL Selects port to be looped back to the far end.