NEC Xen Alpha Installation Manual

							Installation Manual  •  •  •  KSU Installation Page  47A6-506000-642-01
DPH-B13 ETU
The Door Phone (DPH) ETU provides connection for two Door Phone units and two Door
Lock Release devices. Use only the NEC DP-D-1D Door Phone Unit. A suitable third-party
door lock release device must be locally supplied. One DPH-B13 ETU can be installed in
the system.
To install the DPH-B13 ETU:
1. Ensure that the system is turned OFF.
2. Remove the cover from the KSU.
3. Carefully remove the ETU from its packaging, using a wrist strap connected to the
frame ground on the KSU to avoid static discharge.
4. Locate connector CN5 (marked DPH) on the mainboard and slide the ETU between
the posts.
5. Using a philips head screwdriver, secure the ETU to the KSU by tightening the screw
captive in the metal bracket on the ETU.
6. Run the cabling for the door phones and door lock releases from the ETU to the
external MDF. A single pair is required for each connection, and this is not polarity
sensitive.Crimp the special connector supplied to each cable pair.
7. Replace the KSU cover.
8. Turn the system ON.
9. Program the system as required.
Figure 2-36: DHP-B13 ETU 
						

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Door Phones
Switches SW1, SW2 and RV1 allow the volume levels between the doorphone units and the
KSU to be adjusted. Adjust these switches as required to achieve optimal door phone
performance. (Refer to Table 2-2: DPH-B13 ETU Switch Settings, Pg 48.)
Table 2-2  DPH-B13 ETU Switch Settings
When the Door Phone button is pressed, one of two tones is produced at the assigned
telephones (ports 01 and 02 as default).
Connections:
Wiring to each Door Phone requires a single-pair cable, to a maximum Loop Resistance of
20 Ω. Connections DPH1 and DPH2 are not polarity sensitive.
FunctionReferenceDefaultSettings
Volume Adjustment: 
Telephone to DoorphoneSW1 NORMALThis adjustment effects DP1 & DP2.
NORMAL: Normal Volume
LOUD: Increased Volume
Volume Adjustment: 
Telephone to DoorphoneSW2 NORMALThis adjustment effects DP1 & DP2.
NORMAL: Normal Volume
LOUD: Increased Volume
Balance Adjustment: 
Between DP1 & DP2RV1Turn RV1 to adjust the Sidetone of 
the doorphone call. Lower the 
Sidetone if howling occurs in either 
the telephone or doorphone. 
						

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Door Lock Release
While on a Door Phone call, the telephone user can enter an Access Code to operate the
associated Door Lock Release momentarily so that the caller can enter the door.
Connections
Connection between terminals DPR1, DPR2 and the door lock device is via a single pair
cable, not polarity sensitive. A dry contact closure is provided to the external device.
Connection of door lock release equipment must be via a Line Isolation Unit with a
Telecommunications compliance label. The Batesford Electronics Model BE-104 is an
example.
TRF-B13 ETU
The Trunk Transfer (TRF) ETU allows an analogue trunk to be used as the incoming or
outgoing trunk in a Call Forward External operation. Note that the outgoing trunk must be
provided with Line Reversal on Answer by the service provider. The TRF ETU is not
required however, if both trunks are ISDN. One TRF-B13 ETU can be installed in the
system, providing one trunk transfer circuit.
To install the TRF-B13 ETU:
1. Ensure hat the system is turned OFF.
2. Remove the cover from the KSU.
3. Carefully remove the ETU from its packaging, using a wrist strap connected to the
frame ground on the KSU to avoid static discharge.
4. Locate connector CN8 (marked TRF) on the mainboard and slide the ETU between the
posts. Press the ETU down firmly to lock into place.
5. Replace the KSU cover.
6. Turn the system ON.
7. Program the system as required.
Figure 2-37: TRF-B13 ETU
Trunk Transfer Speech Volume Adjustment
Refer to Table 2-3: TRF-B13 ETU Switch Settings, Pg 50, and Table 2-4: CO/PBX Line Loss
Compensation, Pg 50 if speech volume during a transferred call is too low.
When operating with Auto Level Control and Voice Switches OFF, take note of the following
points during transmission tests. If satisfactory settings cannot be achieved under the
following conditions, operate with the Voice Switch ON. 
						

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1. If the incoming trunk receiving volume is too low, change the G11/G12 switch setting to
one level higher.
2. If the transfer destination trunk receiving volume is too low, change the G21/G22 switch
setting to one level higher.
3. If the incoming trunk receiving signal contains a ‘booming’ noise, change the G11/G12
switch setting to one level lower.
4. If the transfer destination trunk receiving signal contains a ‘booming’ noise, change the
G21/G22 switch setting to one level lower.
CAUTION
1. Depending on line conditions, speech levels may decrease during trunk transfer.
2. Hold tones may become distorted when the Voice Switch is ON.
Table 2-3  TRF-B13 ETU Switch Settings
Table 2-4  CO/PBX Line Loss Compensation
ItemSwitchDefaultSetting
Voice Switch 
UsageVoice Switch 
(VSW)ONON: Transmitter/receiver switching as in a 
transceiver.
*Use same setting for destination trunk 
receiving volume switch and incoming 
trunk receiving volume switch.
*If speech volume cannot be adjusted 
using the procedure below, set switch 
to ON.
Speech 
Vo l u me  
Control for 
Trunk 
TransferIncoming Trunk 
Receiving 
Volume SwitchG11:OFF
G12:OFF
• Refer to Table Table 2-4: CO/PBX
Line Loss Compensation, Pg 50
for
details.
* Adjust transfer destination trunk and 
incoming trunk speech volume during a 
trunk transferred call.
• Set receiving volume level according
to line loss (in dBm) in the circuit up to
the exchange line destination point.
Outgoing Trunk 
Transmit Volume 
SwitchG21:OFF
G22:OFF
LevelCO/PBX Line 
ResistanceCompensation 
Level
Incoming Trunk 
Receive VolumeOutgoing Trunk 
Transmit Volume
G11G12G21G22
41281  1880 Ω
(9.0  14.0 dBm)+12 dBm ONONONON
3911 
 1280 Ω
(6.0  9.0 dBm)+9 dBm ON OFF ON OFF
2551 
 910 Ω
(3.0  6.0 dBm)+6 dBm OFF ON OFF ON
1
						

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Power Failure Backup
Operation in the Event of a Power Failure
In the event of a power failure, the optional built-in batteries or external batteries (locally
provided) provide full backup of the service of the system for a period dependent on the
system configuration and service conditions. Two Power Fail Transfer (PFT) Single Line
telephone Interface Circuit are built into the KSU. The KSU connects each Single Line
Telephone directly to CO/PBX line (01 ans 02) to allow origination and termination of calls.
(Refer to Figure 2-38:: Power Failure Backup Flowchart, Pg 51.)
Figure 2-38: Power Failure Backup Flowchart
!Note 1: All calls in progress are interrupted when switch over is made to connect the 
Power Fail Transfer Single Line telephones directly to the CO/PBX Line 1. 
This occurs after backup batteries have expired.
!Note 2: If the power switch of the KSU is in the OFF position, the system will not 
automatically restart service.
!Note 3: When power is restored, calls in progress on the Power Fail telephones will 
not be interrupted. 
						

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Operation When Input Power is Restored
When input power is restored, the system automatically resets and restores service.
Single Line Telephone for Power Fail Transfer
A Single Line telephone can be used as a Power Fail Transfer telephone. (Refer to Power
Fail telephone and Fax connection for details.)
Operating Procedure
To use the Single Line telephone for power fail transfer during a power failure, proceed
as follows:
Originating:
1. Lift the handset. (Ensure that dial done is heard.)
2. Dial the desired number.
3. Talk.
Receiving:
1. Receive ringing tone.
2. Lift the handset and answer.
!Note:The Single Line telephone, designated for Power Fail Transfer, must match 
the dialling type of the corresponding CO/PBX line (10 pps, 20 pps or DTMF) 
where it is connected.
SECTION 5
CABLE
CONNECTIONS
General Information
Connection Requirements
The KSU is connected with each of the Multiline Terminals, Single Line telephones, optional
equipment and analogue trunks by a separate twisted-pair cable through the MDF. ISDN
connection requires two twisted-pair cables. (Refer to Chapter 2 for details.)
Cabling Precautions
When selecting cables and the MDF, future expansion or assignment changes should be
given due consideration. Avoid running cables in the following places:
!A place exposed to wind or rain.
!A place near heat radiating equipment or where the quality of PVC covering could be
affected by gases and chemicals.
!An unstable place subject to vibration.
!Close proximity to computers or radio frequency generating equipment. 
						

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Terminating Cables to Special Connectors
When installing a B614-B13, KSU, ESI(8)-B13 ETU, COI(2)-B13 ETU, DPH-B13 ETU or
SLI(2)-B13 ETU, the cables must be terminated to the connectors provided in the KTU
packing box. The following instructions explain this procedure.
1. Cut the two cables the same length and insert them into the connector. Ensure that
each cable has been inserted all the way tot he end of the cover. (Refer to Figure 2-39::
Attaching the Cables to the Connector, Pg 53.)
2. Lightly hold the connector with the pliers. In this case, make sure that the crimping
portion is held between the lower portion of the jaws of the pliers. (Refer to Figure 2-40::
Holding the Connector with the Pliers, Pg 53.)
Figure 2-40: Holding the Connector with the Pliers
3. Squeeze the pliers to crimp the cables. If the cover is loose, press the cover again with
the pliers. Be careful when squeezing the handles of the pliers as excessive pressure
may cause damage to the connectors.
4. a) After crimping the leads into the special connectors, insert them into the
appropriate socket in the KSU, pushing firmly until the connector snaps securely
into position.
b) To disconnect the plug from the socket, grasp it firmly using a pair of pliers and pull
while holding the unit in place. Do not pull on the wires directly.
c) Do not reuse the plugs once they have been clinched as this may result in a
poor connection.
Adapter Cable
ICT CableCore Diameter Insulation Diameter
0.40 mm 0.66 mm
0.50 mm 0.80 mm
0.65 mm* 1.20 mm
*Remove insulation from wire before inserting into connector.
Figure 2-39: Attaching the Cables to the Connector 
						

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Wiring to the KSU
Multiline Telephone Connection
When connecting Multiline Terminals to the MDF, individually twisted 1-pair cabling must be
used. (Refer to Figure 2-41:: Multiline Terminal and SLT Adapter Connection, Pg 54.)
!Note:Polarity is not critical as the Multiline Terminals are not polarity conscious.
Figure 2-41: Multiline Terminal and SLT Adapter Connection
Single Line Telephone Connection
DTMF or DP dialling and Single Line Telephones can be used to dial within the system.
One-pair cabling is required, it is recommended that twisted pair cabling be used. (Refer to
Figure 2-42:: Single Line Telephone Connection, Pg 54.)
Figure 2-42: Single Line Telephone Connection
Outside Lines
CO/PBX lines are connected to this system using twisted pair wiring to cross-connect the
lines from the RJ11 termination block to the system.
Do not use half-tapping or parallel connections on outside lines connected to the system. 
						

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KSU Cable Routing
All cabling should exit the KSU through the knockout panels on the right hand side. Two
knockout panels are provided.
Figure 2-43: KSU Cabling Knockouts
Remove one or both of these knockouts as required, using side cutters or other suitable tool,
to cut the tabs at the top of the knockout. Once the top is free, move the knockout back and
forth until the tab at the bottom breaks free. Remove any burrs using a sharp knife.
Figure 2-44: Removing the Knockout Panels in the KSU
Run the cabling from each ETU neatly around the perimeter of the mainboard against the
side of the case and exit from the removed knockout(s). Secure cables to side of KSU with
the self adhesive cable tie mounts and cable ties supplied (quantity 2). 
						

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