NEC Neax 2400 Imx Direct Station Selection Console Manual

							ND-70684 (E) CHAPTER 1
Page 3
Revision 1.0
OVERVIEW
DSS Console Modes
3. DSS Console Modes
The DSS can be used as a Direct Station Selection/Busy Lamp Field (DSS/BLF) or an Add-On Module depend-
ing on the following two factors:
 Level Number (even or odd) of the allocated LENs for the DSS console
 Office Data programming
3.1 Direct Station Selection/Busy Lamp Field (DSS/BLF ) Mode
In this mode, a DSS console is used with a Dterm that receives a Direct Inward Dialing (DID) and/or Direct-
In Termination (DIT) call. When the DSS console receives a call, the Dterm user can transfer the incoming
call to a preassigned destination by pressing the appropriate key on the console. The caller is automatically
placed on hold. This function is called the Direct Station Selection (DSS). Each key on the console has a
Light Emitting Diode (LED) to indicate the Busy/Idle status of each assigned station so the DSS can also
provide a D
term user with the Busy Lamp Field (BLF) function.
Figure 1-2   Direct Station Selection (DSS)/Busy Lamp Field (BLF) Mode
DSS/BLF
When a station that has been assigned to this 
DSS/BLF is busy, the associated LED lights red. 
In this example, station 304 is busy.
300 304
DSS
KEY BUSY INDICATION (RED)
 DSS function: Dterm user can transfer call to a
preassigned destination by press-
ing a DSS key on the console.
 BLF function: D
term user can monitor Busy/Idle
status of preassigned stations.
000504030201
545958575655
485352515049
424746454443
364140393837
303534333231
242928272625
182322212019
121716151413
061110090807
123
456
789
0#
        
						

							CHAPTER 1 ND-70684 (E)
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OV E RV I E W
DSS Console Modes
3.2 Add-On Module (ADM) Mode
In this mode, a DSS console is used to expand the Line/Feature Access keys of a Dterm. In addition to the
existing Line/Feature Access keys on each Dterm, the DSS console has a maximum of 60 keys.
Figure 1-3   Add-On Module (ADM) Mode
Table 1-1 Relationship between the Mode Designation and the Mounting Level Numbers
MODE ALLOWABLE LEVEL NUMBERS
DSS mode Even Number LV0, LV2, LV4, LV6
ADM mode Odd Number LV1, LV3, LV5, LV7
In this Add Mode, each key can be used as a 
Line/Feature access key as shown below.
DSS
KEY BUSY INDICATION (RED)
Add-On Module
CALL
BACK
VOICE
CALL
I-USE INDICATION (GREEN)
000504030201
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485352515049
424746454443
364140393837
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182322212019
121716151413
061110090807
123
456
789
0#
        
						

							ND-70684 (E) CHAPTER 1
Page 5
Revision 1.0
OVERVIEW
DSS Specifications
4. DSS Specifications
System specifications for the DSS are shown in Table 1-2.
Table 1-3 shows the maximum cable distances allowed, depending on the type of cable used.
Table 1-2 System Specifications for DSS
ITEM SPECIFICATIONS
Number of KEYs×
 60
Number of Light Emitting Diodes (LEDs)×
 60 (RED)  ×
 60 (GREEN)
Power Source AC 100 Volt ± 10 % (0.1A)
Allowable Cable Length
Note:See Table 1-3 for maximum cable dis-
tance information.850 m (2800 feet)
 AC adapter is required.
Interface Card for the PBX PA-16ELCJ, PA-DAIG-A, PA-DAIJ-A
DimensionsWIDTH 177 mm (6.9 inches)
DEPTH 218.2 mm (8.5 inches)
HEIGHT (1)74.2 mm (2.9 inches)
 When tilt legs are folded.
HEIGHT (2)101.8 mm (4 inches)
 When tilt legs are raised.
Weight 0.69 kg (2.49 pounds)
Table 1-3 Cable Distance Limitations
CABLE LOCATIONCABLE 0.4 mm/26 AWG 0.5 mm/24 AWG
UNIT METERS FEET METERS FEET
1 PBX-DSS 540 1800 850 2800
2 DAU-DSS – – 200 650 
						

							CHAPTER 1 ND-70684 (E)
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OV E RV I E W
General Service Conditions
As shown in Figure 1-4, the cable distance allowed includes the 25-pair installation cable.
Figure 1-4   Cable Distance Definition
5. General Service Conditions
The following service conditions apply to both a DSS/BLF and Add-On Module.
1. A DSS/BLF and an Add-On Module can coexist on one circuit card. Figure 1-5 illustrates an example of
port allocation on an ELC circuit card.
Figure 1-5   Example of Port Allocation on an ELC Card
2. DSS consoles, their associated Dterms, and stations which are to be assigned to the DSS keys must belong
to the same Inter Module Group.
25-Pair installation cableMDF
Cable Distance between PBX and DSSRosetteDSS Console PBX
Champ
Connector
Station Wire
0.4 mm (.051 in) (26 AWG)
0.5 mm (.019 in) (24 AWG)
REAR VIEW
ADM
D
term
Dterm
Dterm
ADM
D
term
DSS/BLFELC
LV
7
6
5
4
3
2
1
0ADM D
term
Dterm
Dterm
ADM D
term
DSS/BLF No terminal can be wired to this port.
NEC
FeatureFeature...
... ... ...
............ ......... .........
...
SpeakerAnswerTransferHold4
5
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##0OPER
ExitHelp
MIC
Feature11
2
32ABC3DEF......
.........RecallConfRedialNEC
FeatureFeature...
... ...
...
............ ... .........
.........
SpeakerAnswerTransferHold4
5
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##0OPER
ExitHelp
MIC
Feature11
2
32ABC3DEF...
......
... ...RecallConfRedial
NEC
FeatureFeature...
... ...
... ......
... ............ ... ...... ...
SpeakerA
nswerTr
ans
ferHold4
5
64GHI5JKL6MNO7897PQRS8TUV9WXYZ0
##0OPER
ExitHelp
MIC
Feature11
2
32ABC3DEF......
... ... ...RecallConfRedial
NEC
Feature...
... ...
... ......
... ............ ......... ...
SpeakerAnswerTransferHold4
5
64GHI5JKL6MNO7897PQRS8TUV9WXYZ0
##0OPER
ExitHelp
MIC
Feature11
2
32ABC3DEF......
... ... ...RecallConfRedial 
						

							ND-70684 (E) CHAPTER 1
Page 7
Revision 1.0
OVERVIEW
DSS/BLF
3. Multiple Dterms cannot use one DSS console.
4. Circuit cards for the DSS are as follows:
 PA-16ELCJ
 PA-DAIG-A (DAI)
 PA-DAIJ-A (DAI)
The previous conditions also apply when a Distributed Access Unit (DAU) is used between the PBX and the
DSS.
6. DSS/BLF
One DSS/BLF console requires 2 consecutive ports on an ELC/DAI card.
When a DSS console is used as a DSS/BLF, be sure to assign and wire the DSS/BLF to a specific LEN whose
level (LV) is an even number (LV = 0, 2, 4, 6). Since a DSS/BLF requires 2 consecutive ports to program the
DSS keys, the port following the designated port, to which the DSS/BLF is wired, must be reserved.
Note:In Table 1-4, “n” represents 0, 1, 2, 3.
Table 1-4 Level Assignment Conditions for DSS/BLF
LEVEL NUMBER CONDITIONS
2n A DSS console can be connected.
2n + 1 Must be reserved for the DSS console. 
						

							CHAPTER 1 ND-70684 (E)
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OV E RV I E W
DSS/BLF
As an example, Figure 1-6 shows a DSS/BLF connected to Port 0 on an ELC card. In this instance, no terminal
can be wired to Port 1. The DSS/BLF mode can only use an even-numbered level.
Figure 1-6   Port Designation for DSS/BLF Mode
2n+1
2n
LV 
7 
6 
5 
4 
3 
2 
1 
0 ELC
000504030201
545958575655485352515049424746454443364140393837303534333231242928272625182322212019121716151413061110090807
No terminal can be wired to this por t when a DSS/BLF is assigned to 
Po r t  0 .
DSS/BLF
 Only even-numbered level is applicable to the DSS/BLF mode.
 When a DSS/BLF is assigned to LV 0, the subsequent port, in this instance LV 1, must be retained for
programming the DSS keys on the DSS/BLF console. 
						

							ND-70684 (E) CHAPTER 1
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OVERVIEW
DSS/BLF
Key Numbers (KYN: 1-40), which appear in the AKYD command, correspond to the 60 DSS keys as shown
below. As an example, Figure 1-7 shows DSS/BLF connected to LV 0.
Figure 1-7   DSS Key Allocation (DSS/BLF)
000504030201
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121716151413
061110090807
DSS/BLFLV 0
KYN of
 AKYD
40393837363534
1716151413121110 9 8 7 6 5 4 3 2 1
Dterm
LV 1
KYN of
 AKYD
40393837363534
1716151413121110 9 8 7 6 5 4 3 2 1
Among 40 KYNs, KYN 10-39 are used.
Among 40 KYNs, KYN 10-39 are used.
The remaining lower 30 DSS keys are assigned as the second 
port (odd-numbered LV), in this case LV1
KYN of
 DSS
605958575655
3837363534333231
KYN of
 DSS
302928272625
 8 7 6 5 4 3 2 1
The DSS Console is physically connected to the even-
numbered LV.
The upper 30 DSS keys are assigned as the first port 
(even-numbered LV), in this example LV0. 
						

							CHAPTER 1 ND-70684 (E)
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OV E RV I E W
Add-On Module
The following features cannot be used when a DSS/BLF console encounters a busy station.
 CALL BACK 
 CALL WAITING
 EXECUTIVE RIGHT-OF-WAY
 STEP CALL
A station user cannot activate the following features for an incoming call from a DSS/BLF console.  
Note
 CALL FORWARDING-OUTSIDE (including ALL CALLS, BUSY LINE, DON’T ANSWER)
 MULTIPLE CALL FORWARDING (including ALL CALLS, BUSY LINE, DON’T ANSWER)
 STATION HUNTING
Note:UNIFORM CALL DISTRIBUTION can be activated for an incoming call from a DSS/BLF as usual when
this feature has been set to the terminal.
7. Add-On Module
A maximum of 48 lines and 12 feature keys may be programmed for an Add-On Module.
One Add-On Module occupies only one port on an ELC/DAI card.
When a DSS console is used as an Add-On Module, be sure to assign the DSS console to a specific LEN whose
level (LV) is an odd number (LV = 1, 3, 5, 7). Also, the D
term used in conjunction with the Add-On Module
must be assigned to the preceding even-numbered LEN level (LV = 0, 2, 4, 6).
Note:In Table 1-5, “n” represents 0, 1, 2, 3.
Table 1-5 Level Assignment Conditions for the Add-On Module Mode
LEVEL NUMBER CONDITIONS
2n + 1 Add-On Modules are connected.
2nThe D
terms which use keys on the Add-On Modules as additional Line Feature 
access keys are connected. 
						

							ND-70684 (E) CHAPTER 1
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Revision 1.0
OVERVIEW
Add-On Module
As an example, Figure 1-8 shows an Add-On Module connected to Port 1 on an ELC card. In this instance, the
associated Dterm must be assigned to Port 0.
Figure 1-8   Example of Port Designation for Add-On Module
000504030201
545958575655485352515049424746454443364140393837303534333231242928272625182322212019121716151413061110090807
1234567890#
       
2n+1
2nLV 
7 
6 
5 
4 
3 
2 
1 
0 ELC
DtermAdd-On Module
Only odd-numbered level is applicable to Add-On Modules.
When an Add-On Module is assigned to LV 1, the preceding port, in this case LV 0 must be used for the associated Dterm. 
						

							CHAPTER 1 ND-70684 (E)
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OV E RV I E W
Add-On Module
To designate the meaning of the upper 24 keys on an Add-On Module, FKYs 17 through 40 of the Dterm that
works in combination with the DSS are used. The remaining 36 keys on the Add-On Module are assigned using
FKYs 5 through 40 of the original port of the Add-On Module. The relationship between KYN, which appears
in the AKYD command, and 60 keys on an Add-On Module is illustrated below. In Figure 1-9, an Add-On Mod-
ule is connected to LV 1 as an example.
Figure 1-9   Line/Feature Access Key Allocation (Add-ON Module)
000504030201
545958575655
485352515049
424746454443
364140393837
303534333231
242928272625
182322212019
121716151413
061110090807
Dterm
LV 0
KYN of
 AKYD
393837363534
2423332120191817161514
Add-On ModuleLV 1
KYN of
 AKYD
393837363534
1413121110 9 8 7 6 5
 3 2 1
Among 40 KYNs, KYN 5-40 are used 
for allocating Line/Feature keys to the 
Add-On Module. These FKYs are used for allocating 
desired Line/Feature keys to the Add-
On Module
KYN of
 DSS
343332313029
6059585756555453
KYN of
 DSS
242322212019
 8 7 6 5 4 3 2 1
The upper 30 DSS keys are assigned as the first port 
(even-numbered LV), in this example LV0.
40
4
3
2
1
These FKYs are 
used for the Line/
Feature keys of 
the original D
term
18
40
333231
28272625
5251
4
The remaining lower 30 DSS keys are assigned as the second 
port (odd-numbered LV), in this case LV1
The Add-On Module is physically connected to the 
odd-numbered LV.