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...

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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...

Installation Manual  •  •  •  KSU Installation Page  49A6-506000-642-01
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...

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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,...

Installation Manual  •  •  •  KSU Installation Page  51A6-506000-642-01
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...

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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:...

Installation Manual  •  •  •  KSU Installation Page  53A6-506000-642-01
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...

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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...

Installation Manual  •  •  •  KSU Installation Page  55A6-506000-642-01
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...

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