NEC manual NDA-24300CHAPTER

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 Chapter 4, Section 3.3.3, SDT Card Replacement Procedure, first replace the SDT 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 following:

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 4, Section 3.3.3, SDT Card Replacement Procedure, replace the SDT card in the self-node with a spare.

NDA-24300CHAPTER 3

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