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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-1193UDS1-BD (UDS1 Interface Circuit Pack)
3
This test is also used to maintain the Lucent 120A1 CSU Module or the 401A T1
Sync Spliltter, and the 402A or 403A E1 Synchronization Spllitter. The CSU
Module, when combined with the functionality provided by the TN464F circuit
pack, provides functionality equivalent to an external stand-alone Lucent ESF T1
CSU. The combination of the TN464F and 120A1 CSU Module is known as an
Enhanced Integrated CSU (I-CSU).
The 401A T1 Synchronization Spllitter, when combined with the functionality
provided by the TN464F circuit pack, allows an ATM switch to derive its timing
from a T1 connected to the UDS1 in the DEFINITY.
The 402A or 403A E1 Synchronization Spllitter, when combined with the
functionality provided by the TN464F circuit pack, allows an ATM switch to derive
its timing from an E1 connected to the UDS1 in the DEFINITY.
If a TN464F circuit pack detects certain I-CSU/Sync Splitter hardware errors, it
will notify maintenance. When the maintenance subsystem receives notification
of the I-CSU/Sync Splitter error, it will execute this Loss of Signal Inquiry test. The
test, in addition to querying for a Loss Of Signal alarm condition, will also query
the TN464F board to confirm the I-CSU/Sync Splitter error. A Minor or Warning
alarm will be raised depending on the severity of the I-CSU/Sync Splitter error.
The trunks on the board may be taken out of service if the I-CSU/Sync Splitter
error is deemed serious.
If a Loss Of Signal alarm and an I-CSU/Sync Splitter error co-exist, the Loss Of
Signal alarm condition will take priority and the board and all trunks on the board
will be put in the out-of-service state. Errors will be logged, however, for both.
When the maintenance subsystem receives notification that the I-CSU/Sync
Splitter hardware error condition no longer exists, maintenance will restore the
board and all trunks to their previous service state if the alarm can be cleared (no
other I-CSU/Sync Splitter errors or Loss Of Signal alarm exist).