Operational Tests
Automatic Protection Switching and Alarm Test
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5 - 1 3
Lucent Technologies - Proprietary
See notice on first page
365-372-327 R2.0
Issue 1, October 2003
Function Units,
Switching Test
Use this procedure to test any of the Function Slots occupied by a
LNW6/LNW7 (28DS1), LNW16 (12DS3/EC1) or LNW39 (DS1/
DS3/16/3)
circuit pack.
This test is performed when the LNW6/LNW7 (28DS1), LNW16
(12DS3/EC1) or LNW39 (DS1/DS3/16/3) circuit packs are in a 1+1
protection arrangement.
Important!
This procedure should be performed on each function
unit pair equipped with LNW6/LNW7 (28DS1), LNW16 (12DS3/
EC1) or LNW39 (DS1/DS3/16/3) circuit packs.
Step 1
Locate the first Function Group equipped with LNW6/LNW7 (28DS1),
LNW16 (12DS3/EC1) or LNW39 (DS1/DS3/16/3) circuit packs.
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Step 2
Unseat the active circuit pack. The active circuit pack has an
ACTIVE
LED lit.
Requirement:
The
ACTIVE
LED on the other circuit pack in the
Function Group lights.
The
MN
alarm and the NE LED on the SYSCTL should be lit.
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Step 3
Unseat the second circuit pack in the pair.
Requirement:
On the SYSCTL, the
MN
alarm extinguishes and the
CR
alarm lights.
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Step 4
Reseat the first circuit pack that was removed.
Requirement:
The
ACTIVE
LED on the reseated circuit pack lights.
The
FAULT
LED on the circuit pack will light for several seconds then
extinguish.
On the SYSCTL, the
CR
alarm extinguishes and the
MN
alarm and the
NE LED will be lit.
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Step 5
Reseat the second circuit pack.
Requirement:
The
ACTIVE
LED on the first circuit pack remains
on.
The
ACTIVE
LED on the second circuit pack remains off.