NEC Neax 2400 Imx Direct Station Selection Console Manual

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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...

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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...

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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...

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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...

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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...

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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...

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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
545958575655
485352515049
424746454443
364140393837
303534333231
242928272625
182322212019
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...

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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...

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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...

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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...