NEC Neax 2400 Imx Installation Manual

							NDA-24234 CHAPTER 2
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Revision 3.0
INSTALLATION DESIGN
Figure 2-9   Face Layout of IMG2, 3 (Multiple IMG Configuration)
PH-PC36 (MUX) PH-PC36 (MUX)
PH-PC36 (MUX) PH-PC36 (MUX)
PH-PC36 (MUX) PH-PC36 (MUX) PH-PC36 (MUX)
PH-PC36 (MUX)
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
TO P U
PIM 3
PIM 2
FA N U
PIM 1
PIM 0
DUMMY
BASEU
PA-PW54-A (PWR1)
PA-PW55-A (PWR0)
PA-PW55-A (PWR0)
PA-PW55-A (PWR0)PA-PW55-A (PWR0) PA-PW54-A (PWR1)
PA-PW54-A (PWR1) PA-PW54-A (PWR1)
IMG2, 3 
						

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INSTALLATION DESIGN
9.2 Circuit Card Locations
This section explains the main function of controlling circuit cards on a module basis. For more detailed infor-
mation on each card, please refer to the NEAX2400 IMX Circuit Card Manual.
Figure 2-10   Controlling Circuit Cards in LPM
Table 2-4  Controlling Circuit Cards in LPM
Slot No. Circuit Card Symbol Functions, Mounting Conditions
02, 03 PH-IO24 IOC 
(Input/
Output 
Controller)This circuit card supplies the system with a serial interface, which 
conforms to RS-232C, between external equipment such as the MAT, 
SMDR, and MCI. One card is equipped with four I/O ports. The system 
maximum is eight ports (two cards).
04 PH-PC40 EMA 
(Emergency 
Alarm 
Controller)This card detects various kinds of alarms which might occur in the 
system, and sends out the information of the detected alarm to the circuits 
concerned. In addition, this card has the following functions: 
Music-On-Hold sending function (Single IMG configuration only)
active/stand-by changeover function
CPR (Central Processor Rack) CPR consists of the following components. 
CPU Board: Includes the Main Processor Unit (MPU), flash ROM, 
and 64 MB or 128 MB - Random Access Memory (RAM). (128 MB-
RAM is used for a system using 
FUSION features.) In addition, the 
board is equipped with GT (PZ-GT16) (Single IMG Configuration)/
GT (PZ-GT13)
 (Multiple IMG Configuration) card, and LANI (PZ-
PC19) card.
DSP: Equipped with switches and 7-seg LEDs on the panel.
FDD/HDD: Floppy Disk Drive (FDD) and Hard Disk Drive (HDD) 
PWR: Supplies the operating power to the LPM.
00
0102
03
04
 LPM
 PWR
 FDD/HDD DSP
 CPR
PH-PC40 (EMA)
PH-IO24 (IOC)
PH-IO24 (IOC
) Note
Note:This IOC card is optional.
 CPU-1
 CPU-0 
						

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INSTALLATION DESIGN
Figure 2-11   Controlling Circuit Cards in PIM 0 (Single IMG Configuration Only)
Table 2-5  Controlling Circuit Cards in PIM 0 (Single IMG Configuration Only)
Slot No. Circuit Card Symbol Functions, Mounting Conditions
01 PA-PW55-A PWR This circuit card supplies operating power to circuit cards accommodated 
in the PIM.
03 PA-PW54-A DPWR This circuit card supplies operating power to circuit cards accommodated 
in the PIM.
13, 14 PH-SW 10 TSW This circuit card combines the Time Division Switch (TSW) INT, PLO, 
MUX, and CFT. The TSW capacity is 2048 
× 2048 time slots, and it 
allows non-block switching for the maximum configuration of 
NEAX2400 IMX. This card is mounted within the PIM0 only.
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21PA-PW55-A (PWR0) PA-PW54-A (PWR1)PH-SW10 (TSW0) PH-SW10 (TSW1) 
						

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INSTALLATION DESIGN
Figure 2-12   Controlling Circuit Cards in PIM
Table 2-6  Controlling Circuit Cards in PIM
Slot No. Circuit Card Symbol Functions, Mounting Conditions
01 PA-PW55-A PWR This circuit card supplies operating power to circuit cards accommodated 
in the PIM.
03 PA-PW54-A DPWR This circuit card supplies operating power to circuit cards accommodated 
in the PIM.
13, 14 PH-PC36 MUX This circuit card is an interface card for mounting line circuits and/or 
trunks. In between the CPR and the Port Microprocessor (PM) of the line/
trunk circuit, this card provides an interface for multiplexing/de-
multiplexing of voice PCM (Pulse Code Modulation) information and 
digital data information.
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21PA-PW55-A (PWR0) PA-PW54-A (PWR1)PH-PC36 (MUX0) PH-PC36 (MUX1) 
						

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INSTALLATION DESIGN
Figure 2-13   Controlling Circuit Cards in TSWM (Multiple IMG Configuration)
Table 2-7  Controlling Circuit Cards in TSWM (Multiple IMG Configuration)
Slot No. Circuit Card Symbol Functions, Mounting Conditions
00,  01 PH-PW14 PWRSW This circuit card supplies operating power to circuit cards accommodated 
in the TSWM.
08, 09 PH-PC20 DLKC This circuit card provides the Attendant Consoles (ATTs) with 
information such as ATT call termination/answer/release (abandoned 
call) via the Data Link which is established in the TSW card. In addition, 
station idle/busy information is sent to the ATTs via the same Data Link.
10, 11 PH-GT09 GT This circuit card permits the CPU to directly control the TSW, PLO, 
DLKC, and MISC circuit cards via TSW I/O Bus and MISC I/O Bus.
12-19 PH-SW12 TSW This circuit card supplies the Time Division Switch (TSW) and INT 
function for the system. The TSW capacity is 8192 
× 2048 TS (time slots) 
for an IMG, and 4 cards achieves 8192 
× 8192 TS switching for 4 IMG 
configuration.
21, 23 PH-CK16/
16-APLO This circuit card, used together with a direct digital interface circuit card, 
sets up network synchronization with the network concerned. With this 
circuit card, the IMX 4IMG system can be a clock subordinate office of 
the digital network.
21, 23 PH-CK17/
17-APLO This circuit card, used together with a direct interface circuit card, sets up 
network synchronization with the network concerned. Since this circuit 
card provides high precision base clock oscillator, the IMX 4 IMG system 
can be a clock source office of the digital network.
TSWM
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21PH-PW14 (PWRSW0) PH-PW14 (PWRSW1)PH-SW12 (TSW0) PH-SW12 (TSW1)
PH-SW12 (TSW0) PH-SW12 (TSW0) PH-SW12 (TSW1)
PH-SW12 (TSW0) PH-SW12 (TSW0)
PH-SW12 (TSW0)
PH-PC20 (DLKC0) PH-PC20 (DLKC1) PH-GT09 (GT0) PH-GT09 (GT1)PH-CK16/17/16-A/17-A
(PLO0) PH-CK16/17/16-A/17-A(PLO1) 
						

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INSTALLATION DESIGN
9.3 Preparation Of Trunking Diagram
Prepare the trunking diagram according to the customer’s specifications. Since there are different kinds of
switching offices such as a single office, network offices, etc. are involved, the trunking diagram must be pre-
pared per the customer’s specifications.
9.4 Preparation Of Module Group Face Layout And Port Accommodation Diagram
When mounting of various circuit cards in the PBX have been finalized, the installation company concerned
should prepare the module group face layout and port accommodation diagram.
9.5 Preparation Of Circuit Card Switch Setting Sheets
Regarding the circuit cards to be mounted in the PBX, prepare the circuit card switch setting sheets. Some of
the circuit cards may not properly operate by the initial switch settings arranged at the factory before shipping
or may not meet the customer’s specifications. Referring to the Circuit Card Manual denote the switch settings
in the Switch Setting Sheets provided in the explanations of each of the circuit cards. Make the switch setting
entries with respect to all the circuit cards.
It should be remembered that use of a circuit card varies with the switch setting on that card.
10. INSTALLATION CABLES
The following installation cables are required for the PBX:
DC Power Cable: For connections between the Rectifier and battery and be-
tween the Rectifier and the PBX
AC Power Cable: For supplying AC source power to the Rectifier
Ground Cable: Communication, Security and Line Protector grounding
25P Shielded Cable with CHAMP 
(Amphenol) connector at one end: For connections between the MDF and the PBX
25P Shielded Cable with CHAMP
(Amphenol) connector at both ends: For connections between the MAT and the PBX, and be-
tween peripheral equipment and the PBX
House  Cable: For connections between terminals (telephone sets, etc.) and
the MDF
Cables for C.O. lines and Tie Lines
Others: For connections between Alarm Indicators and the MDF 
						

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INSTALLATION DESIGN
10.1 AC Input, DC Power, And Ground Cables
1. For AC input cable, VCT (Polyvinyl Chloride Cabtyre Cable) is to be used. However, if shielding is nec-
essary, as is the case when the AC input cable is to be installed in parallel with a low-voltage power cable,
etc., be sure to use VCT-S (Shielded Polyvinyl Chloride Cabtyre Cable).
2. For the power receiving terminals of the PBX, -48 V and G terminals are provided in dual (A side and B
side). For two PIMs or less, the DC main power cable is connected only to A side terminals. For three PIMs
or more, the cable is branched out. A side supplies power to LPM/TSWM, PIM0 and PIM1, and B side to
PIM2 and PIM3.
3. For the main ground cable, an IV or CV cable of more than 14 mm
2 (6 AWG) is to be used. (See Figures
2-14 through 2-16).
As the security ground cable for the MAT and externally installed equipment, IV cable of 2 mm
2 (14 AWG)
is to be used. For the ground cable for the line protector of the MDF, an IV cable of 14 mm2 (6 AWG) is to
be used.
Figure 2-14   DC Main Power Cable and Main Ground Cable (1- or 2-PIM System) (Single IMG Configuration)
BATTERY
AC POWER
DISTRIBUTION
BOARD
VCT CABLE BATTERY
CABLES
RECTIFIER
POWER AND
GROUND CABLES
CV or IVPBX
(For 1/2 PIM Configuration)
Ear th BarAC SERVICE
OUTLET-48V
AG
FE
MAT
MDF
GROUND
TERMINAL G
IV (G)
(ex. 6 AWG) FEE -48V
G IV (R)
IV (BL)-48V
G
B
A
B
Note:If the cover of CV Cable to be used is black, use the following clamp cover terminals so they can be
easily identified.
-48V: Red cover G: Black cover E: Green cover
CABLE SPECIFICATION
DC Main Power Cable Calculate the sectional area of cable referring to Figure 2-17.
Main Ground Cable
More than 14 mm
2 (6AWG) 
						

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INSTALLATION DESIGN
Figure 2-15   DC Main Power Cable and Main Ground Cable (3- or 4-PIM System) (Single IMG Configuration)
BATTERY
AC  POWER
DISTRIBUTION
BOARD
VCT CABLE BATTERY
CABLES
RECTIFIER
POWER AND
GROUND CABLES
CV or IVPBX
(For 3/4 PIM Configuration)
Earth BarAC SERVICE
OUTLET-48V
AG
FE
MAT
MDF
GROUND
TERMINAL G
IV (G)
(ex. 6 AWG) FE E -48V
G IV (R)
IV (BL)-48V
G
B
A
B
Note 1:If the cover of CV Cable to be used is black, use the following clamp cover terminals so they can be
easily identified.
-48V: Red cover
G: Black cover
E: Green cover
Note 2:Extension jointing is usually performed with a T-type terminal for wires of the same size. Refer to Tables
2-8 through 2-10.
Note 3:It is recommended that the -48V leads of A and B be connected to separate circuit breakers at the recti-
fier.
CABLE SPECIFICATION
DC Main Power Cable Main Cable Calculate the sectional area of cable referring to 
Figure 2-17.
Branch Cable
IV cable: more than 14 mm
2 (6 AWG)
Main Ground Cable
More than 14 mm
2 (6 AWG)
IV (G) (ex. 14 AWG)IV (R)IV (BL) 
						

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INSTALLATION DESIGN
Figure 2-16   DC Main Power Cable and Main Ground Cable (Multiple IMG Configuration)
BATTERY
AC POWER
DISTRIBUTION
BOARDVCT BATTERY
CABLES
RECTIFIER
POWER ANDGROUND CABLES
Earth BarAC SERVICE
OUTLETMAT
MDF
GROUND
TERMINAL
G
IV (G)
(ex. 6AWG) FEE -48V
G IV (R)
IV (BL)-48V
G
IV (G)IV (R)
IV (BL)
CABLES
(ex. 14AWG)
-48V
AGND
FE B
AB
-48V
AGND
FE B
AB
-48V
AGND
FE B
AB
DFB
CV or IV
CV or IV
CV or IV
CV or IV
iv(g)
IV (BL)
IV (R)
IMG 3
IMG 2
IMG 1 IMG 0
NFB
-48V
AGND
FE B
AB
Note 1:Do not make a multiple connection across “A” terminal and “B” terminal of -48V. Likewise, do not
make a multiple connection across “A” terminal and “B” terminal of GND.
Note 2:It is recommended that each -48V lead from the PBX be connected to a separate circuit breaker at the
rectifier. 
						

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INSTALLATION DESIGN
Table 2-8  Clamp Terminal Shape and Purpose
TYPE SHAPE PURPOSE REMARKS
AEnd terminal
TBranching or extension of power 
cable