NEC Neax 2400 Imx Fusion Network System Manual

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Repair Procedure When LED Indicates Abnormality
All 24 B-channels sent from the TSW are looped back to the TSW at Interface on the card. At this
time, the adjacent node detects AIS signals. (See  
    in the figure below.) 
2. Line Loopback
All 24 B-channels sent from the line are looped back to the line at Line Interface on the card. (See
 in the figure below.)
3. Payload Loopback
All 24 B-channels sent from the line are looped...

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Repair Procedure When LED Indicates Abnormality
2.3 Test Procedure
STEP 1: Set the MODE switch to 9 (Fusion Link Test) from 8 (standard setting) on the FCH card and initialize
the circuit card by turning the MB switch ON→OFF
Figure 6-5   How to Set the Fusion Link Test Mode
STEP 2: Select an appropriate loopback point by setting the switch (SW01/SW13B).
Figure 6-6   Loopback Point Designation
STEP 3: When the LYR LED flashes at 60-INT,...

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Figure 6-7   Fusion Link-Test Results
STEP 4: Return Mode to 8 (standard setting) when the test is complete.
STEP 5: Initialize the FCH (PA-FCHA) card using the MB switch.
Note:Be sure to initialize the FCH (PA-FCHA) card, after changing the setting of the Mode Switch.
3. FCCS Network Connection Test
This section explains how to perform the following connection tests within the Fusion network:
...

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STEP 4: The call terminates on STN B.
STEP 5: Confirm the speech condition is sufficient (no noise, not one-way speech, etc.).
STEP 6: Replace the handset of STN A.
STEP 7: Repeat the above steps for all Fusion links.
3.1.2 FCCS Call Termination Test
STEP 1: Using the MBCT command, make busy all trunks in the origination route except the trunk to be tested
at Node B.
STEP 2: Lift the handset of STN B in Node...

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3.2 ATTCON Connection Test (via FCCS)
Perform the ATTCON connection test, using the following procedure.
3.2.1 ATTCON Call Origination Test
STEP 1: Dial the operator access code (normally “0”), from STN A in Node A.
STEP 2: Confirm that the ATT lamp flashes and ringer sounds at each ATTCON in Node B.
STEP 3: Answer the call by pressing the ATND key.
STEP 4: Confirm the speech condition is sufficient (no...

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3.3 Line (LC, ELC, DLC Card) Connection Test (via FCCS)
Perform the Line (LC, ELC, DLC Card) connection test, following the procedures listed below.
3.3.1 Line Origination Test: Confirmation of Physical/Telephone STN Number
STEP 1: Connect the line circuit card to be tested to a telephone set in Node A (self-Node).
STEP 2: Lift the handset of STN A and confirm DT (Dial Tone).
STEP 3: Place a call to an ATTCON...

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FCCS Network Connection Test
3.4 3-party Conference Trunk Function Test (via FCCS)
Perform the 3-party conference trunk function test, following the procedures listed below.
STEP 1: Using the MBTK Command, make busy all 3-party Conference Trunk (CFTs) except the trunk to be
tested.
STEP 2: Establish a station-to-station connection between STNs A and B in self node (Node A). 
STEP 3: STN A goes to Switch Hook Flash (SHF), and after...

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Fusion and Non-Fusion Connection Tests
3.5.1 Primary Route Trunk Test
STEP 1: Using the MBCT command, make busy all trunks in the primary route except the trunk to be tested.
STEP 2: Lift the handset of STN A in self-node (Node A).
STEP 3: Dial the Telephone Number of STN B which belongs to other node (STN B).
STEP 4: Confirm the speech condition is sufficient (no noise, not one-way speech, etc.).
STEP 5: Replace the handset of STN A....

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Fusion and Non-Fusion Connection Tests
4.1 When Seizing a Trunk from a Station
STEP 1: Using the MAT command, make busy all trunks in the route except the trunk to be tested.
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:...

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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   Loopback Points of SDT Card
 Test Procedure
STEP...