NEC Neax 2400 Ipx Fusion Network System Manual

CHAPTER 6 NDA-24299
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POST INSTALLATION TEST
Fusion and Non-Fusion Connection Tests
STEP 2: Station A in self-node (Node A) dials the Physical Station Number for Station B in Node C.
STEP 3: The call terminates to Station B via FCCS and non-FCCS.
STEP 4: Confirm the speech condition is sufficient (no noise, not one-way speech, etc.).
STEP 5: Replace the handset of STN A.
STEP 6: Repeat the above steps for all Fusion links.
4.2 When Seizing a Trunk from an ATTCON
STEP 1: The operator...

NDA-24299 CHAPTER 6
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POST INSTALLATION TEST
SDT Card Loopback Test
5. SDT Card Loopback Test
The patterns for loopback test, which can be set by the SDT card, are as follows:
1. Local Loopback
Loopback tests are performed only on the SDT card at the self-node.
2. Remote Loopback
Loopback tests are performed between different nodes. The result of this test can be confirmed not at the
self-node, but at the distant node.
Figure 6-14 illustrates the loopback points of the SDT card....

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POST INSTALLATION TEST
SDT Card Loopback Test
STEP 2: Make sure that the “LPB” lamp on the PA-SDTA card, or the “SYCxx” lamp on the PA-SDTB card
lights steady-green.
STEP 2.5: When the loopback pattern is “local loopback,” confirm that the “OPT” and “SYNC” lamps are both
OFF on the PA-SDTA card.
(“OPT” and “SYNC” lamps are OFF = Result of loopback test is fine)
STEP 3: Return the key settings of the P-SW key (on PA-SDTA card: see Figure 6-15) to the original...

NDA-24299 CHAPTER 7
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CHAPTER 7 TROUBLESHOOTING
This chapter explains the Fusion-related system messages that may be displayed, together with procedures on
how to repair the indicated failure. If the message is displayed, follow the procedure described in each system
message. For more information on the other system messages, see the NEAX2400 IPX System Operations and
Maintenance Manual.
1. List of Fusion-related System Messages
Table 7-1 List of Fusion-related System Messages
No....

CHAPTER 7 NDA-24299
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TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
Figure 7-1 shows a sample system configuration. The number of cards and cables may vary depending on the
system.
Figure 7-1   Related Hardware
2. 3-B PM C-level Infinite Loop (Permanent)
This message is displayed when a C-level program abnormal state has been detected as permanent. When
the abnormal state is detected by the Port Microprocessor (PM) on an FCH card, the PM places the card
into make-busy...

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TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
2.1 Repair Procedure
STEP 1: Initialize the indicated FCH (PA-FCHA) card using the MB key. (MB key: Down➔ Up ➔ Down).
Refer to Figure 7-3.
When the LED on the FCH card lights green and the related system messages are not displayed,
monitor the system for a while. Otherwise move to STEP 2.
Figure 7-3   How to Initialize the FCH (PA-FCHA) Card
STEP 2: Replace the FCH card, following the procedure listed in...

CHAPTER 7 NDA-24299
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TROUBLESHOOTING
3-B PM C-level Infinite Loop (Permanent)
Figure 7-4   How to Replace the FCH (PA-FCHA) Card
[How to Replace FCH card]
4
C026AE
MB
Not Used
MBR
FCH (PA-FCHA)
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
(M N T 3)
0 12MNT
8
MNT 3
MNT 3MNT 3
MBMB
FCHDTI
MBR key operation
Cable Disconnection
A n ti-s ta tic  K it
OPE
OPE
Front Cable
M B key operation FCH
DTI
FCHDTI
1) Provide the anti-static kit.
2) Turn ON the M NT 3 switch....

NDA-24299 CHAPTER 7
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TROUBLESHOOTING
3-C PM C-level Infinite Loop (Temporary)
3. 3-C PM C-level Infinite Loop (Temporary)
This message is displayed when the C-level program has been detected as abnormal by the Port
Microprocessor (PM) mounted on the FCH (PA-FCHA) card. In this instance, the system performs an
appropriate restart (B-monitor/Initial restart) according to the frequency of the failures. Refer to 
Figure 7-5. If the frequency exceeds 15 times an hour, it is judged as...

CHAPTER 7 NDA-24299
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TROUBLESHOOTING
3-E PM Lockup Failure (Temporary)
4.1 Repair Procedure
STEP 1: Make sure that station-to-station connections can be established in the PIM containing the indicated
FCH (PA-FCHA) card.
If the station-to-station connections cannot be established, the PIM is faulty. Repair the PIM.
Otherwise, move to STEP 2.
STEP 2: Initialize the FCH card using the MB key. See Figure 7-3 “How to Initialize FCH (PA-FCHA) Card.”
When the LED lights green and no system...

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TROUBLESHOOTING
13-H/I/J Signaling Link Failure (Permanent)/(Temporary)/(Recovery)
6. 13-H/I/J Signaling Link Failure (Permanent)/(Temporary)/(Recovery)
Figure 7-8 illustrates the message that is displayed when the Fusion link (D-ch) has a failure. If the failure occurs
frequently, the system displays 13-H Signaling Link Failure (Permanent). The shaded area Figure 7-9 explains
this message.
Figure 7-8   13-H/13-I/13-J Signaling Link Failure System Message
Figure...