NEC SV8500 Operation And Maintenance Manual - page 489
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CHAPTER 3
System Messages
(6) Receiving Path Failure/Receiving Path Error
Abnormal state is detected in the process of multiplexing the Receive signals. To restore this, perform the
following:
STEP 1
Initialization of SDT card (distant node)
Initialize the SDT card in the distant node, and observe the situation. If the fault is not restored,
proceed with STEP 2.
STEP 2
Initialization of SDT card (self-node)
Initialize the SDT card in the self-node, and observe the situation. If the fault is not restored,
proceed with STEP 3.
STEP 3
Replacement of SDT card
It cannot be confirmed which node side (self-node or distant node) is faulty. By referring to
Replacement Procedure of SDT Card and Optical Fiber Cable
card only in one of the nodes. When the fault does not recover, then also replace the SDT card
in other side of the nodes.
(7) Pointer Failure/Sending Path Failure/Sending Path Error
Abnormal state is detected in the process of multiplexing the Send signals. To restore this, perform the fol-
lowing:
STEP 1
Initialization of SDT card
Initialize the SDT card in the self-node, and observe the situation. If the fault is not restored,
proceed with STEP 2.
STEP 2
Replacement of SDT card
By referring to Chapter 5:
Replacement Procedure of SDT Card and Optical Fiber Cable
the SDT card in the self-node with a spare.