Avaya CMC1 Installation Manual page 304

Adding or Removing Hardware
Install DS1/T1 CPE loopback jack
Busying out the DS1 circuit pack
Now take the DS1 circuit out of service.
1
Once you are sure that the DS1 circuit pack and ICSU are functioning correctly, go to the
management terminal and busy out the DS1 circuit pack by typing
where UU
board.
Administering the DS1 for the test
1
At the management terminal, open the DS1 administration form. Type
where UU
board.
2
Make sure that the near-end csu type field is set to integrated.
3
Change to page 2 of the DS1 administration form, and confirm that the value of the TX LBO field
is 0dB.
4
If the value of the TX LBO field is not 0dB, record the current value. Then set the TX LBO field
to 0dB for testing.
5
Press ENTER to make the changes, CANCEL to quit without changes.
Testing the integrity of the loopback circuit
Now perform the first part of the actual loopback test.
1
At the management terminal, enter
cabinet number,
The loopback jack powers up. Active, DS1 facility alarms (if any) clear. After about 20 seconds,
the first set of results appears on the terminal.
2
If
FAIL
the loopback jack or the loopback jack may itself be faulty. Isolate the problem by replacing the
loopback jack and repeating
3
If
FAIL
the cable between the ICSU and the loopback jack. Then repeat
4
When
PASS
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.
NOTE:
The loss of signal (LOS) alarm (demand test #138) is not processed during this test while
the 3-in-24 pattern is active.
Clearing the results of previous tests
1
Zero out the bit-error counter. At the management terminal, enter
where
UU
board.
2
Zero out the performance measurement counter. At the management terminal, enter
ds1 log UUCSS
of the DS1 board.
304
is the cabinet number, C
is the cabinet number, C
is the carrier letter, and
C
appears on the terminal display, there may be a fault in the wiring between the ICSU and
Step 1.
still appears after the loopback jack has been replaced, suspect a wiring problem. Replace
appears on the terminal, proceed with the second part of the test, checking the
is the cabinet number,
C
, where UU is the cabinet number,
Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
is the carrier letter, and SS
is the carrier letter, and SS
test ds1-loop UUCSS cpe-loopback-jack
is the slot number of the DS1 board.
SS
is the carrier letter, and
SS
is the carrier letter, and
C
busyout board UUCSS
is the slot number of the DS1
change ds1 UUCSS
is the slot number of the DS1
, where is the
UU
Step 1.
clear meas ds1 loop UUCSS
is the slot number of the DS1
clear meas
is the slot number
SS
June 2004
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