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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Installing a DEFINITY ECS ATM-PNC
3-27Synchronization Installation and Testing
3
DTE loopback procedure.
To start the Data Terminal Equipment (DTE) loopback
at the 316X CSU or DSU/CSU, use the procedures in Table 3-14
.
11. Check for CSU
alarms
Verify that no alarms are against the CSU (the
OK, SIG, SIG LEDs are lit).
12. Test the circuit
pack
test board
UUCSS
Verify that the DS1 circuit pack passes Tests
138 through 145. If these tests pass and this is
a new installation, go to Step 14.
If any one of Test 138 through 145 fails, follow
the repair procedures listed in DEFINITY ECS
Maintenance for R8r.
After clearing all errors, retest the circuit pack.
13. Run error
report
list
measurements
ds1 summary
UUCSS
Wait 15 minutes. Check the error report and
verify that the DS1 circuit pack is free of any
errors.
To interpret the periodic list measurements
report.
14. DTE and RLB
loopback tests
(new
installations)
Perform both DTE and RLB loopback test at the
316X CSU or DSU/CSU to verify that the DS1
board can successfully transmit and receive a
DS1 signal through the splitter to the 316X and
back to the DS1 board.
Go to the ‘‘DTE loopback procedure’’ on page
3-27 and ‘‘RLB loopback procedure’’ on page
3-28
Table 3-14. DTE loopback testing for the 316X DSU/CSU
√ Step Action Command Description
1. Begin the
loopback test
Press the double-up arrow button.
2. Go through the
readout steps
Press the button under “Test.”
3. Continue Press the button under “Lpbk.”
Continued on next page
Table 3-13. Splitter installation to DS1 — Continued
√ Step Action Command Description
Continued on next page