Lucent Technologies DEFINITY Installation For Adjuncts And Peripherals page 139

DEFINITY ECS Release 8.2
Installation for Adjuncts and Peripherals 555-233-116
9 DS1/T1 CPE Loopback Jack
Loopback Testing with a Smart Jack
2. If FAIL appears on the terminal display, there may be a fault in the wiring
between the ICSU and the loopback jack or the loopback jack may itself
be faulty. Isolate the problem by replacing the loopback jack and
repeating step 1.
3. If FAIL still appears after the loopback jack has been replaced, suspect a
wiring problem. Replace the cable between the ICSU and the loopback
jack. Then repeat step 1.
4. When PASS appears on the terminal, proceed with the second part of the
test, checking the integrity of transmitted data.
Testing the integrity of data sent over the loop
Now perform the second part of the test, checking for data errors.
Clearing the results of previous tests
1. Zero out the bit-error counter. At the management terminal, enter
clear meas DS1 loop UUCSS
where UU is the cabinet number, C is the carrier number, and SS is the
slot number of the DS1 board.
2. Zero out the performance measurement counter. At the management
terminal, enter
clear meas DS1 log UUCSS
where UU is the cabinet number, C is the carrier number, and SS is the
slot number of the DS1 board.
3. Zero out the ESF error count. At the management terminal, enter
clear meas DS1 esf UUCSS
where UU is the cabinet number, C is the carrier number, and SS is the
slot number of the DS1 board.
Running the data test
1. Display the bit error count. At the management terminal, enter
list meas DS1 sum UUCSS
where UU is the cabinet number, C is the carrier number, and SS is the
slot number of the DS1 board.
2. Step through the table below to troubleshoot.
NOTE:
The loss of signal (LOS) alarm (demand test #138) is not processed
during this test while the 3-in-24 pattern is active.
Issue 1
April 2000
117