NEC Neax 2400 Ipx Installation Manual

NDA-24306 CHAPTER 5
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NAP-200-026
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System Initialization Test
Perform the total system initialization by powering ON/OFF
On all PWR supplies, set the circuit breaker OFF (DOWN). If a module contains two PWR 
supplies, they must be turned OFF simultaneously.

 For LNs: IMG3 IMG2 IMG1 IMG0
IMG3: PIM3PIM2PIM1PIM0
IMG2: PIM3PIM2PIM1PIM0TSWM1
IMG1: PIM3PIM2PIM1PIM0TSWM0
IMG0: PIM3PIM2PIM1PIM0CPR1CPR0
 For ISW: ISWM CPR1 CPR0
Turn ON the PWR supplies in each module in the...

CHAPTER 5 NDA-24306
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Circuit Card Initialization Test
START
Make the No. 0 CPU into active state.
In each PIM, initialize any 
Line/Trunk circuit card.On the selected Line/Trunk circuit card, set the MB switch UP.
The OPE lamp goes out.
System Message “7-K” is displayed.
Set the MB switch DOWN.
The OPE lamp illuminates.
System Message “7-L” is displayed.
Clear the alarm Clear the alarm indication by pressing the “ALM RST” button 
on the TOPU.
Place the No. 1 CPU...

NDA-24306 CHAPTER 5
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4. PORT CONNECTION TEST
4.1 Outline
Tests are to be performed on all the circuits of LC and Trunk circuit cards and PWR Supplies. LC and Trunk
circuit cards are tested with respect to their operations and speech path conditions. PWR Supplies are tested with
respect to howler tone and ringing signal.
While tests are in progress, the No. 0 CPU and TSW systems must be ACT (active).
4.2 Port Connection Test Procedure
The connection test procedure for each type of...

CHAPTER 5 NDA-24306
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ORT (RST Card) Connection Test
START
Make busy all ORTs On the front of the RST card, set all MBR switches (0-7) to 
the OFF position, making all ORTs busy.
From Station “A” (DP), test 
ORTs one circuit at a time.Un-busy (make idle) only the ORT to be tested.
Station “A” goes off-hook and after hearing dial tone, dials 
the station number of Station “B.”
Station “A” confirms ringing to Station “B” and Station “B” 
answers.
Stations “A” and...

NDA-24306 CHAPTER 5
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ORT (RST Card) Connection Test
Perform tests for a situation where all ORTs are busy.
System Data SYS1, 
INDEX 4, b
0 =0Station “A” goes off-hook.
Station “A” confirms that reorder tone is heard.
Station “A” goes off-hook.
System Data SYS1, 
INDEX 4, b
0 =1Station “A” goes off-hook.
Station “A” confirms that no tone is heard.
Un-busy (make idle) a single ORT circuit.
Station “A” confirms that dial tone is heard.
Station “A” goes off-hook....

CHAPTER 5 NDA-24306
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ATTCON (ATI Card) Connection Test
START
A station repeats an ATTCON 
call. Each ATTCON answers 
the call.Station “A” dials the operator access code (normally, “0”).
At each ATTCON, the operator confirms that the ATT lamp 
flashes and the ringer sounds.
At each ATTCON, the operator answers the call by pressing 
the ATND key.
Station “A” confirms speech with each ATTCON.
The operator at each ATTCON releases by pressing the 
CANCEL key.
Station...

NDA-24306 CHAPTER 5
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Line (LC, ELC, DLC Card) Connection 
Te s t
START
An ATTCON or Dterm is called 
from each station. The called 
party confirms the station 
number.On the MDF, a telephone set is connected to the line circuit 
to be tested
The station (XXXX) to be tested goes off-hook and 
confirms dial tone.
The station (XXXX) calls an ATTCON or D
term.
The called ATTCON or D
term answers the call, and confirms 
speech and the station number of the calling...

CHAPTER 5 NDA-24306
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Test Outline:
The purpose of this test is to confirm, by setting up an outgoing connection test for each outgoing trunk, that speech
can be made and that the call can be released.
Outgoing trunks must be tested one at a time using the sequence of Routes and Trunk Numbers assigned at each
office.
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Sheet 1/3
Outgoing Trunk (COT, TLT, DTI Card) 
Connection Test
START
When a C. O. Line or Tie Line is 
not connected with a trunk circuit, 
temporary cross...

NDA-24306 CHAPTER 5
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 Set up a loop-back connection between the COT (C.O. Trunk) to be tested and a station line.
Figure 031-1  COT Test Configuration
 The trunk route must be assigned for Loop Start.
Figure 031-2  TLT Test Configuration
 Set up a loop-back connection between the TLT (Tie Line Trunk) to be tested and another EMT.
 If the TLT is a DID (Direct Inward Dialing) Trunk, connect the related leads as shown below.
 If the TLT is a 2W E&M System, connect the related leads...

CHAPTER 5 NDA-24306
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 If the TLT is a 4W E&M System, connect the related leads as shown below.
 Set up a loop-back connection between the DTI Trunk to be tested and another DTI Trunk as shown below:
Figure 031-3  DTI Test Configuration
 If the office is the primary office (Clock-Source-Office), perform the tests by disconnecting the PLO and the
M-OSC. (The mode of the PLO becomes “Self Operation Mode.”)
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Outgoing Trunk (COT, TLT, DTI Card)
Connection Test
T...