Alcatel-Lucent 1850 TSS-60 Installation And System Turn-Up Manual page 216

Stand-alone installation testing
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29
Check off the appropriate box in
E O
N D
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DS3 terminating equipment loopback testing (LNW84 without optics)
Perform this test when the Alcatel-Lucent 1850 TSS-60 is equipped with LNW84 without
optics in the main slots.
Facility loopback testing allows the installer to verify the electrical cabling to the
Alcatel-Lucent 1850 TSS-60 NE. Follow the procedure below to perform a facility
loopback test at the Alcatel-Lucent 1850 TSS-60 shelf. When the Alcatel-Lucent 1850
TSS-60 is cabled to other DS3 terminating equipment, in order to complete the loopback
testing, it will be necessary to contact the Customer Network Control Center and have a
signal established at the port(s) under test.
To test cabling to the DSX-3, use a DS3 test set to transmit and receive toward the facility
loopback.
Perform the following tests for each DS3 circuit cabled to the Alcatel-Lucent 1850
TSS-60.
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1
Select
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2
Choose the DS3 port to test and click Select.
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3
Select
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4
Once the loopback is up, a test signal shall be generated at the DS3 terminating equipment
which will verify that the cabling is correct.
Note:
loopback.
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5
While observing the error free transmission, grasp the DS3 cable about two inches from
the BNC connector head and gently rotate (twist) the cable in a clockwise and counter
clockwise direction about 45 degrees (gently).
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6 - 2 2
S
F T E P S
Fault -> Analysis -> Loopback
Operate Loopback Type: Facility
and
A test set can be applied at the DSX-3 to test cabling toward the facility
"Installation checklist" (p.
...
and click
DS3/EC1 testing
II-5).
Apply
.
Issue 1 January 2009
365-372-603R2.0