NEC Neax 2400 Imx Installation Manual

							NDA-24234 CHAPTER 1
Page 1
Revision 3.0
CHAPTER 1 INTRODUCTION
1. GENERAL
During the period from equipment carry-in of the NEAX2400 IMX – referred to in the remainder of this manual
as “the PBX”– till it is placed in service, the following must be performed:
Installation of the system and its peripheral equipment
System startup
Installation test
Miscellaneous jobs
This manual explains how to proceed with these activities, and related precautions. It is recommended that the
installer thoroughly read Section 2., “HOW TO FOLLOW THE MANUAL” before engaging in any phase of
the installation.
2. HOW TO FOLLOW THE MANUAL
2.1 Outline
The work required to be performed is divided into the following chapters. Basically, the work is performed in
the order of these chapters:
Chapter 2, “INSTALLATION DESIGN” 
This chapter explains installation design and preparation of the required installation materials.
Chapter 3, “INSTALLATION PROCEDURE” 
This chapter explains the procedures pertaining to equipment carry-in, installation, power supply (cabling,
wiring), etc., of the system, and also explains the installation procedures concerning peripheral equipment
(MDF, Rectifier, Terminal Equipment.).
Chapter 4, “SYSTEM STARTUP” 
This chapter explains the procedures for initial power-on and office data entry upon completion of the sys-
tem installation.
Chapter 5, “INSTALLATION TEST PROCEDURE” 
This chapter explains the test procedures to be performed, upon completion of the system startup, to deter-
mine:
If the system operates as directed by the office data.
Whether reinitialization or system changeover can be performed.
Whether the interface with the associated distant office is normal.
Chapter 6, “FAULT RECOVERY DURING TESTS” 
This chapter explains the recovery procedure which the installer needs to follow in case of a fault occur-
rence while engaging in work pertaining to system startup and basic connections.
Chapter 7, “WORK AFTER INSTALLATION TESTS” 
This chapter explains various kinds of work and site cleaning, etc. which must be performed after comple-
tion of installation tests so that the system can be cut over normally. 
						

							CHAPTER 1 NDA-24234
Pag e 2
Revision 3.0
INTRODUCTION
2.2 How to Follow NAPs
This manual categorizes the work contents of installation, system startup and installation tests into detailed work
items, and an NEC Action Procedure (NAP) number is assigned to each of such work item.
The following shows how to interpret a NAP number.
Figure 1-1 shows an example of an NAP.
NAP- XXX-XXX
Serial Number (000-999) Note
Work Category Number
200: Installation
215: System Startup, Installation Test, Fault Recovery
Note:Performing NAPs in sequential order by serial numbers is recommended. 
						

							NDA-24234 CHAPTER 1
Page 3
Revision 3.0
INTRODUCTION
Figure 1-1   Example of NAP
NAP- 200-004
Sheet 3/3
Installation of the Base Unit
1. INSTALLING THE BASE UNIT USING A SPECIAL STAND
START
Securing the Base UnitSecure the Base Unit onto the special stand as per Figure 
004-4.
Level CheckCheck the level of the Base Unit. If necessary, adjust the 
level by inserting spacers beneath the Base Unit.
END
BASE U
SPECIAL STANDBOLT (M-10)
LOCK WASHER
PLAIN WASHER
NAP Number
Sheet Number of NAP
Title of NAP 
						

							CHAPTER 1 NDA-24234
Pag e 4
Revision 3.0
INTRODUCTION
2.3 How To Follow Trees
This manual explains performance of a predetermined procedure (work contents covered in each NAP) in a
“Tree” format as shown in Figure 1-2. Before engaging in the intended work, be sure to understand the work
contents by tracing the given tree.
Figure 1-2   Example of a Tree
START
On the MDF, make temporary cross connections between the Trunk for Direct-In Termination (DIT) 
and an LC.
C.O. Line Incoming Call Station “B” dials the number of LC “C” (Station “C”).
Incoming Call to Station via 
DIT TrunkThe call terminates to Station “A”; Station “A” rings.
Confirm that the ringing is distinct from that of an intra-
office call or ordinary C.O. call.
The ringing signal for Direct-In Termination calls can 
be the same as that used for C.O. calls if the related 
Office Data is assigned.
System Data SYS1, INDEX 72, SYS3, INDEX 0, and 
parameter DR of Command “ARTD”.
Answer and Talk Station “A” goes off-hook.
Station “A” and “B” talk with each other.
Release Station “A” and “B” both go on-hook.
Remove the temporary cross connections.
END 
						

							NDA-24234 CHAPTER 1
Page 5
Revision 3.0
INTRODUCTION
Figure 1-3   Static Caution Indication
This manual provides “Static Caution” indicators (see Figure 1-3) on pages where work involving static-sensi-
tive components is described.
The 3M
 Model 8012 Portable Field Service Kit, shown in Figure 1-4, is recommended as an effective coun-
termeasure against static electricity.
Figure 1-4   3M Model 8012 Portable Field Service Kit
Note:
3M is a registered trademark of Minnesota Mining and Manufacturing, Inc.
AT T E N T I O N
Contents
Static Sensitive
Handling
Precautions Required
Wrist StrapPlace the Circuit
Card on a
conductive sheet. Connect ground wire to the Earth
terminal of the Module Group. 
						

							CHAPTER 1 NDA-24234
Pag e 6
Revision 3.0
INTRODUCTION
2.4 Figure and Table Numbers
Each Figure and Table within this manual are numbered as shown below.
1. Figure and table in NAP
Figure XXX-X
Serial number of Figures in each NAP
Serial number (000-999) of the NAP in which the Figure exists.
2. Other figure and table
Ta b l e  X - X
Serial number of Table in each Chapter
Number of the Chapter in which the Table exists.
Understanding this numbering rule will help you when looking for the desired Figure or Table.
2.5 Essential/Critical Information
To prevent accidents or equipment damage from occurring while work is being performed, each manual pro-
vides 
WARNING, CAUTION, and Note: indications to draw the technician’s attention to specific matters.
1. Meaning
WARNING:Personal injury may result if the warning is not heeded.
CAUTION:Damage to the equipment and/or the system may result if the caution is not heeded.
Note:Indicates an item which requires special attention.
2. Locations of Indicators
WARNING and CAUTION indications are located at the top of the page. Notes are included as part of the
work procedures on the page. 
						

							NDA-24234 CHAPTER 2
Page 7
Revision 3.0
CHAPTER 2 INSTALLATION DESIGN
1. GENERAL
This chapter provides information pertaining to installation design and preparation of the required installation
materials. The following topics are discussed:
Environmental Requirements
Floor Space
Floor Load Requirements
Equipment Room Requirements
Power Supply Requirements
MDF Requirements
Installation Tools
System Accommodation
Installation Cables
2. ENVIRONMENTAL REQUIREMENTS
The PBX is sensitive to the same rises in temperature and humidity as a computer. Air conditioning may be re-
quired, depending on the installation environment. The following paragraphs address the following environ-
mental conditions.
Temperature and Humidity
Heat Generation from Switching Equipment
2.1 Temperature And Humidity
Table 2-1 shows the environmental conditions required in the switching equipment room.
If the switching system is operated in an environment that does not meet these specifications, the reliability of
the switching equipment may be impaired. Improper operating conditions can cause circuit boards, etc., to de-
teriorate. Therefore, to enable the equipment to operate for the extent of its expected lifetime, careful consider-
ation must be given to the location of the equipment, and to proper ventilation and air conditioning.
If no equipment is provided to remove the heat generated by the system, or if the temperature or humidity fluc-
tuates repeatedly, the system’s electronic parts can be adversely affected. Such conditions will promote corro-
sion of metal parts and deterioration of insulation, thereby lowering the overall reliability of the system. 
						

							CHAPTER 2 NDA-24234
Pag e 8
Revision 3.0
INSTALLATION DESIGN
Note:
A short period means a period not exceeding three consecutive days (72 hours) or 15 days (360 hours) in
a year.
2.2 Heat Generation From Switching Equipment
Figure 2-1 shows heat generation from the switching equipment with respect to current consumption.
Figure 2-1   Heat Generation from Switching Equipment for the PBXTable 2-1  Temperature and Humidity
TEMPERATURERELATIVE 
HUMIDITYREMARKS
During 
OperationsNormal Operations 5
°C - 30
°C (41
°F -86
°F) 15% - 65%
Short Period 
Note0
°C - 40
°C (32
°F-104
°F) 15% - 90%
During Storage & In Transit–18
°C - 50
°C (0
°F -122
°F) 8% - 90%
Temperature Change Max. 5
°C/30 Min. (9
°F/30 Min.)  90%
Note:BTU; British Thermal Unit (1 BTU=1058.4J)
BTU/HT
100 200 300 400 500 600 700 800 900 1000
No. of PORTS (2.1 m)
(1.8 m)
(1.5 m)
(1.2 m)
(.9 m)
(.6 m) 
						

							NDA-24234 CHAPTER 2
Page 9
Revision 3.0
INSTALLATION DESIGN
3. FLOOR SPACE
1. The PBX requires floor space for the following system equipment:
Switching Equipment (Module Group)
Maintenance Administration Terminal (MAT)
MDF
Rectifier
Batteries
Attendant Console
2. The required floor space for the various equipment rooms is as follows.
Switching Equipment Room: For installing the Module Group, MAT, MDF and Rectifier
Battery Room: For installing Batteries
Operator Room: For installing an Attendant Console with desk and chair
3. Equipment Room: Free Access Floor or Computer Floor
4. FLOOR LOAD REQUIREMENTS
Required floor capacities are as follows:
Switching Equipment Room: More than 3430 Pa (71.6 pounds per square foot)
Operator Room: More than 2940 Pa (61.4 pounds per square foot)
5. EQUIPMENT ROOM REQUIREMENTS
The following floor conditions should be considered prior to installation:
5.1 Floor Surface
1. Switching Equipment Room
The maximum difference in floor level at each point within the room should be less than +5mm (0.2
inch).
An elevated-type floor such as Free Access floor or computer room floor should be constructed.
2. Battery Room
It is recommended that the floor have a slope (1/1000) and drain at the end of the slope.
The floor surface should be made of acid-resistant materials. 
						

							CHAPTER 2 NDA-24234
Pag e 10
Revision 3.0
INSTALLATION DESIGN
5.2 Wall
Switching Equipment Room
A Concrete wall is necessary so that cable racks can be installed (unless a free-access floor is used).
It is recommended that the walls be painted so that the wall materials do not generate dust, etc.
The maximum difference in level at the wall surface should be less than +5 mm (0.2 inch).
5.3 Ceiling
Switching Equipment Room
The required ceiling height is more than 2.3 meters (7.5 feet).
5.4 Lighting Facilities
1. Switching Equipment Room
Fluorescent lamps are recommended.
No less than 200 lux at the floor level is necessary.
2. Operator Room
Fluorescent lamps are recommended.
No less than 200 lux at the floor level is necessary.
3. Battery Room
Anti-explosion type lamps must be utilized.
No less than 150 lux at the floor level is necessary.
6. POWER SUPPLY REQUIREMENTS
6.1 Main Source Power
The PBX requires an operating power of -48 V DC ±5V DC. This DC operating power is supplied from the
rectifier which receives AC power from the commercial AC power source. For greater system reliability, it is
recommended that the PBX be supplied with backup DC operating power for a predetermined duration from the
batteries installed as the auxiliary power supply source.
The batteries for the PBX must be connected in parallel with the -48 V DC output of the rectifier. Also, when
installing batteries, an EMF panel must be placed in-line (series) with the input -48 V DC supplied to the PBX.
This panel is necessary when changing the state of the rectifier from float to equalize and vice versa.