NEC Neax 2400 Ipx Installation Manual

							NDA-24306 CHAPTER 2
Page 33
Revision 1.0
INSTALLATION DESIGN
Because the Fusion link can be established either independently within the system (IPX-U) or jointly with other
outside IPX and/or IMX series, the assignment of NCN can differ, depending on the network configuration.
Figure 2-20   Example of NCN Assignment (1/3) Note 1:The network-level data (NDM data) can be assigned only at the NCN. However, other node-level data (LDM data)
must also be assigned at each node (including ISW), depending on the requirements. For more details, refer to NAP-
200-020 in Chapter 4 or the “Fusion Network System Manual.” 
Note 2:When the system is operated, the function to be performed by the ISW is only to provide the PCM time slot switching
between each Local Node (LN0 - LN3). However, a Fusion Point Code (FPC) must be assigned for the ISW as well
as for other Local Nodes, using the ASYDL command. 
[Pattern 1] When the system has a FCCS link independent of other systems
If the system has a FCCS link only within the system (i.e. no FCCS link is established with other IPX and/or IMX
series), an NCN must be assigned from any of the existing Local Nodes, excepting the ISW. In this example, LN0
is assigned as the NCN.
LN0
ISWLN1
LN3 LN2
< IPX-U System >
(FPC=15) (FPC=16)
(FPC=17)
(FPC=19) (FPC=18)Note 2
LDM
NDMDM
Network Data Memory
-System Data
  ASYDN, AFMU, ALRTN....
-Number Planning Data
  ANPDN, ASPAN....
-Station Numbering
  ALGNN, ALGSN....
......
Assignment of NDM Data
via Centralized MAT
NDM
NDM
NDM
NDM
Note 1
Network Control Node
Station B
TELN: 42005
Station D
TELN: 45007 Station C
TELN: 43002Station A
TELN: 41000
ISW :  Inter-node Switch
LN   :  Local Node
NCN:  Network Control NodeDM   :  Data Memory
LDM:  Local Data Memory
NDM: Network Data MemoryFPC   :  Fusion Point Code
TELN:  Telephone Number
MAT  :  Maintenance Administration Terminal
ND
M
 Da
ta
 
C
op
y 
						

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INSTALLATION DESIGN
Figure 2-20  Example of NCN Assignment (2/3)
Note 1:The network-level data (NDM data) can be assigned only at the NCN. However, other node-level data (LDM
data) must also be assigned at each node (including ISW), depending on the requirements. For more details,
 refer t o NAP-200-020 in Chapter 4 or the “Fusion Network System Manual.” 
Note 2:When the system is operated, the function to be performed by the ISW is only to provide the PCM time slot
switching between each Local Node (LN0 - LN3). However, a Fusion Point Code (FPC) must be assigned for
[Pattern 2] When the system has a FCCS link with other IPX and/or IMX series and an NCN exists within
the system
If the system has a FCCS link with other IPX and/or IMX series (i.e. the FCCS nodes also exist outside the system),
an NCN can be assigned from either Local Nodes outside the system or the Local Nodes inside the system. In this
example, LN0 of the IPX-U system is designated as the NCN.
NDM
ISW :  Inter-node Switch
LN   :  Local Node
NCN :  Network Control NodeDM   :  Data Memory
LDM :  Local Data Memory
NDM : Network Data MemoryFPC   :  Fusion Point Code
TELN :  Telephone Number
MAT  :  Maintenance Administration Terminal
LN-C (FPC=3)
LN-A (FPC=1)
NDM       Station E
TELN: 47001       Station G
TELN: 49012
IPX-U
System
Station F
TELN: 48003
NDMLN-B (FPC=2)
Fusion Link
LN0
ISWLN1
LN3 LN2
(FPC=15) (FPC=16)
(FPC=17)
(FPC=19) (FPC=18)Note 2
LDM
NDMDM
Network Data Memory
-System Data
  ASYDN, AFMU, ALRTN....
-Number Planning Data
  ANPDN, ASPAN....
-Station Numbering
  ALGNN, ALGSN....
......
Assignment of NDM Data
via Centralized MAT
NDM
NDM
NDM
NDM
Note 1
Network Control Node
Station B
TELN: 42005
Station D
TELN: 45007 Station C
TELN: 43002Station A
TELN: 41000
N
DM
 D
ata
 
Copy 
						

							NDA-24306 CHAPTER 2
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INSTALLATION DESIGN
Figure 2-20  Example of NCN Assignment (3/3)
Note 1:The network-level data (NDM data) can be assigned only at the NCN. However, other node-level data (LDM data)
must also be assigned at each node (including ISW), depending on the requirements. For more details, refer to NAP-
200-020 in Chapter 4 or the “Fusion Network System Manual.” 
Note 2:When the system is operated, the function to be performed by the ISW is only to provide the PCM time slot switching
between each Local Node (LN0 - LN3). However, a Fusion Point Code (FPC) must be assigned for the ISW along
with other Local Nodes, by using the ASYDL command. 
[Pattern 3] When the system has a FCCS link with other IPX and/or IMX series and an NCN exists outside
the system
If the system has a FCCS link with other IPX and/or IMX series (i.e. the FCCS nodes also exist outside the system),
an NCN can be assigned from either the Local Nodes outside the system or Local Nodes inside the system. In this
example, LN-A (NEAX2400 IPX series, 4-IMG type) outside the system is designated as the NCN.
      Station G
TELN: 49012
NDM
NDM
       Station F
TELN: 48003LN-B(FPC=2)
LN-C(FPC=3)
Fusion Link
LN-A(FPC=1)
LDMNDM
DM
Network Data Memory
-System Data
  ASYDN, AFMU, ALRTN....
-Number Planning Data
  ANPDN, ASPAN....
-Station Numbering
  ALGNN, ALGSN....
......
Assignment of NDM Data
        via Centralized MAT
Note 1
Station E
TELN: 47001
Network Control Node
Station B
TELN: 42005        Station A
TELN: 41000
ISW
LN1
LN3 LN2
(FPC=15)(FPC=17)
(FPC=19) (FPC=18)Note 2NDM
NDM
NDM
NDM
LN0(FPC=16)
NDM
Station D
TELN: 45007
TELN: 43002
       Station C
IPX-U
System
NDM Data Copy
ISW :  Inter-node Switch
LN   :  Local Node
NCN:  Network Control NodeDM   :  Data Memory
LDM:  Local Data Memory
NDM: Network Data MemoryFPC   :  Fusion Point Code
TELN:  Telephone Number
MAT  :  Maintenance Administration Terminal 
						

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INSTALLATION DESIGN
9.4 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
prepared as per the customer’s specifications.
9.5 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.
9.6 Preparation of Circuit Card Switch Setting Sheets
With respect to 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. By 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 between 
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 between 
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) should be used. However, if shielding is
necessary, 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/ISWM, PIM0 and PIM1, and B
side to PIM2 and PIM3.
3. For the main ground cable, an IV or CV cable of more than 14mm
2 (6 AWG) is to be used. (See Figure 2-
21).
As the security ground cable for the MAT and externally installed equipment, IV cable of 2mm
2 (14 AWG)
is to be used. For the ground cable for the line protector of the MDF, an IV cable of 14mm2 (6 AWG) is to
be used. 
						

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INSTALLATION DESIGN
Figure 2-21   DC Main Power Cable and Main Ground Cable
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 -48 V lead from the PBX be connected to a separate circuit breaker at the rectifier.
MDFMAT
 GROUND
TERMINAL Earth Bar BATTERY
AC POWER
DISTRIBUTION
BOARD
RECTIFIER
-48V
G
-48V
G
E
FE
G
AC SERVICE
OUTLET
IV(G)
(ex.6AWG)
NFB
IV(BL)
IV(R)
BATTERYCABLES
VCT
IV(G)
IV(G)(ex.14AWG)
IMG 0 IMG 1 IMG 2 IMG 3
ABABFEAB ABFEA BABFEA BABFE-48VGND-48VGND-48VGND-48VGND
IMG 0 IMG 1 IMG 2 IMG 3
ABABFEAB ABFEA BABFEA BABFE-48VGND-48VGND-48VGND-48VGND
IMG 0IMG 1IMG 2IMG 3
ABABFEAB ABFEA BABFEA BABFE-48VGND-48VGND-48VGND-48VGND
IMG 0 IMG 1 IMG 2 IMG 3
ABABFEAB ABFEA BABFEA BABFE-48VGND-48VGND-48VGND-48VGND
LN0
LN1
LN2
LN3 ISWAB ABFE-48VGND
MAIN GROUND CABLES
DC POWER
DISTRIBUTION
BOARD
MAIN CABLES
BRANCH CABLES
CABLES 
						

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INSTALLATION DESIGN
Table 2-10  Clamp Terminal Shape and Purpose
TYPE SHAPE PURPOSE REMARKS
AEnd terminal
TBranching or extension of power 
cable 
						

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INSTALLATION DESIGN
Note:Selection of T-Type Clamp Terminal
The asterisk (*) in Table 2-11 indicates that an auxiliary conductor is needed when using a main power wire and a
branch power wire of a thinner diameter, and the clamp terminal of the type indicated in the selected columns.Table 2-11  Selection of T-Type Clamp Terminal
BRANCH
 MAIN14 AWG/ 
2 mm
2
12 AWG/ 
3.5 mm
2
10 AWG/ 
5.5 mm
2
8 AWG/ 
8 mm
2
6 AWG/ 
14 mm
2CURRENT REMARKS
10 AWG *T-20 *T-20 *T-20 - - 51A
8 AWG *T-20 *T-20 *T-20 T-20 - 63 A
6 AWG T-20 T-20 T-20 T-26 T-44 90 A
3 AWG T-26 T-26 T-44 T-44 T-44 115A
2 AWG *T-44 T-44 T-44 T-44 T-44 139A
1 AWG *T-44 *T-44 T-44 T-66 T-60 162A
1ø *T-60 T-60 T-60 T-60 T-76 190A
2ø *T-76 T-76 T-76 T-76 T-76 217A
3ø *T-98 *T-98 *T-98 T-98 T-98 257A
4ø *T-122 *T-122 *T-122 *T-122 T-122 298A
250 mcm *T-154 *T-154 *T-154 T-154 T-154 344A
300 mcm *T-154 *T-190 *T-190 *T-190 T-190 395A
400 mcm *T-240 *T-240 *T-240 *T-240 T-240 439A
Table 2-12  Clamping Tool
*TOOL TYPEAPPLICABLE CROSS 
SECTION OF WIRE (mm
2)ACCESSORIES REMARKS
No. 1 0.25 ~ 6.64 Manual type For A and C type termi-
nal
No. 2 6.64 ~ 10.25
No. 9 6.64 ~ 42.42 Convex die 2 pieces Handle type hydraulic tool For A, C, 
D, type terminal
No. 10 6.64 ~ 117.02Convex die 4 
Convex die 8
No. 11 Same as above Same as above Pedal type hydraulic tool 
For all terminal types 
No. 11 and No. 12 tool are used with 
No. 13. No. 12 117.02 ~ 325Convex die 4 
Convex die 4
No. 13 Rubber hose
No. 15 14 ~ 122 Convex die 7 pairsHandle type hydraulic tool For T type 
terminal
No. 16 123 ~ 365 Convex die 5 pairs Use with No. 13 for T type terminal 
						

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INSTALLATION DESIGN
Figure 2-22   Calculation Method for Sectional Area
BATTERY
RECTIFIERPBX
IV1M1 I2M2
S=
0.018x(I1M1+I2M2)
V
where,
S  
I1
M1
I2
M2
V:  Sectional area required (mm
2) 
:  Maximum current passing between battery and rectifier
:  Two-way cable length between battery and rectifier
:  Maximum current passing between rectifier and PBX
:  Two-way cable length between rectifier and PBX
:  Voltage drop
  
						

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INSTALLATION DESIGN
10.2 Cables between the PBX and MDF
With respect to lines, trunks, and NCU (PFT), 25P shielded the PBX and the MDF are connected using cables
with a CHAMP (Amphenol) connector at one end.
Table 2-13 shows the procedure for calculating the required number of cables. Figure 2-23 also shows an outline
of cable connections from the Module Group to the outside.
Table 2-13  Calculating the Number of Cables
CABLE NAME CALCULATION SUB TOTAL
LT Cable Number of PIMs × 12
NCU Cable Number of PFT Circuit Cards × 2
68PH EXMISC CA One cable
ODT Cable Number of TLT circuit cards × 1
TOTAL