NEC Xen Alpha Installation Manual

							Installation Manual  •  •  •  Installing DTU Type Multiline MonitorsPage 79A6-506000-642-01
3. Insert flat head screwdriver into A in Figure 4-32:: Unlocking Tab, Pg 79 and press
straight down until tab unlocks.
Figure 4-32: Unlocking Tab
4. Lightly press right side of leg shown as B in Figure 4-33:: Releasing Right Tab, Pg 79,
insert flat head screwdriver at C and Press straight down until other tab unlocks.
Figure 4-33: Releasing Right Tab
5. Open and remove Bottom Cover by rotating counterclockwise as shown in Figure 4-34::
Removing Bottom Cover, Pg 79.
Figure 4-34: Removing Bottom Cover
6. If an adapter is being installed, press tabs A and B to remove the dummy end from the
base plate as shown in Figure 4-35:: Removing Base Plate Dummy End, Pg 79.
Figure 4-35: Removing Base Plate Dummy End 
						

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7. Cut the dummy end in half as shown in Figure 4-36:: Cutting Dummy End in Half, Pg
80.
Figure 4-36: Cutting Dummy End in Half
8. If Adapter is installed in Connector 1 as show in Figure 4-37:: Installing Adapter in
Connector 1, Pg 80, Install Dummy end B as shown in Figure 4-38:: Installing Dummy
End B, Pg 80.
Figure 4-37: Installing Adapter in Connector 1
Figure 4-38: Installing Dummy End B
ACA-UA Unit (AC Adapter)
This unit provides power to ancillary devices or Attendant Consoles. The ACA-UA Unit must
be connected to an adapter that is installed on a Multiline Terminal. If more than one adapter
is installed on a Multiline Terminal, only one ACA-UA Unit is necessary.
The power requirements for the ACA-UA Unit are:
• Input: 240 Vac, 50 Hz
• Output: 24V DC, 400 mA
• Polarity:   
						

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1. Connecting the ACA-UA Unit
a) Unplug the line cord from the Multiline Terminal and unplug the ACA-UA Unit from
the AC outlet. (Failing to do this can damage the unit and/or the
Multiline Terminal.)
b) Turn the Multiline Terminal upside down and open the base plate.
2. Locate the AC adapter plug on the ancillary device that is connected to the bottom of
the Multiline Terminal and plug in the AC adapter.
Figure 4-39: ACA-UA Unit Connection
ADA-UA Unit (Ancillary Device Adapter)
Ancillary Device Adapters allow connection of a recording device to DTU-type
Multiline Terminals.
When installing an ADA-UA Unit, first connect the cables to the ADA-UA Unit, set the dip
switches, and then install the ADA-UA Unit on the Multiline Terminal.
1. Installing an ADA-UA Unit on a Multiline Terminal
a) Unplug the telephone cord from the Multiline Terminal.
b) Prepare Multiline Terminal for adapter installation. Refer to Section 2 Preparing
Multiline Terminal for Adapter Installation.
c) Plug the ADA-UA Unit connector into the receptacle connector on the back of the
Multiline Terminal. Snap the ADA-UA Unit into the hooks on the Multiline Terminal
to secure it. 
Figure 4-40: Attaching the ADA-UA Unit to the Multiline Terminal
d) Replace base plate. 
						

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e) Lead the audio cable out through the groove on the base cover. Plug in the
telephone cord. 
Figure 4-41: Leading the Audio Cable out from the ADA-UA Unit
Connecting Cables to the ADA-UA Unit
Cable terminal connectors are located on the right side of the ADA-UA Unit. Cables should
be connected on this unit before installing the unit on the Multiline Terminal.
Figure 4-42: ADA-UA Unit
1. Cut off the plug on one end of the cable.
2. Locate the adapter terminals on the right side of the unit as illustrated in Figure 4-42::
ADA-UA Unit, Pg 82.
3. Remove the cap on the adapter terminal to expose the metal receptacle. Push the
cable in the applicable receptacle, and replace the cap. Line up the slot on the cap with
the slot on the metal receptacle to ensure proper contact. Refer to Figure 4-43::
Attaching Cables to the ADA-UA Unit, Pg 82. 
Figure 4-43: Attaching Cables to the ADA-UA Unit 
						

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4. Insulate the end of the cable that needs to be shielded with insulating tape.Table 4-3:
ADA-UA Cable Connections, Pg 83 provides a list of cable connections to ADA-UA
ADP terminals and describes the specifications for the terminals.
Table 4-3: ADA-UA Cable Connections, Pg 83 provides a list of cable connections to
ADA-UA ADP terminals and describes the specifications for the terminals. 
Table 4-3  ADA-UA Cable Connections
Te r m i n a l
NumberCables to ConnectTerminal Specifications
T1When warning tone is not being sent 
from the recorder, connect wire pair input 
from tone generator to T1:T2. The 
warning tones from the generator are 
sent to T1:T2 on a dedicated wire pair 
while the speech path is sent from the 
ADA-UA on T3:T4 over a separate wire 
pair to the recorder.
Input Terminal:T1 and T2 are enabled 
for tone generating 
device when DIP 
switches 3 and 4 are 
OFF.
(If switches 3 and 4 are ON, a humming 
sound may be recorded due to 
impedance mismatch.)
Input Impedance on T1 and T2: 100K 
W
Input Level on T1 and T2: –15 dB ~ 40 
dB 
T2
T3Connect recorder device wire pair 
speech input to T3:T4.
If the recorder used supplies a warning 
tone, this tone may also be sent over the 
T3:T4 wire pair back to the terminal.
Input/Output Terminal:
Refer to dip switch settings in 
Table 4-
4: ADA-UA Unit Switch Settings, Pg 
85
.
T4
T5Connect the bare end of the control 
cable.
When a Multiline Terminal is idle, this 
contact is closed. When the Multiline 
Terminal goes off-hook (using the 
handset, headset, or speakerphone), 
this contact is open. 
If recorder owner manual specifies 
start on open circuit, connect T5 and 
T6.
T6Connect the shielded end of the control 
cable.Provides common connection for 
control cable.
T7Connect the bare end of the control 
cable.
When the Multiline Terminal is idle, this 
contact is open. When the Multiline 
Terminal is busy (using the handset, 
headset, or speakerphone), this contact 
is closed.
If recorder owner manual specifies 
start on closed circuit, connect T6 
and T7.
T8
Unused
T9
Unused 
						

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Switch Settings
The DIP Switch is located at the bottom center of the ADA-UA Unit. The DIP Switch allows a
technician to configure the board to specific settings. Figure 4-44:: ADA-UA Unit Switch
Settings, Pg 84 shows the default settings. 
Figure 4-44: ADA-UA Unit Switch Settings Notes:
☛When recording in handsfree (half-duplex) mode using the built-in speakerphone, the
record warning tone may not be audible to the far-end party. 
☛The transmit recording level is lower than the receiving voice level for intercom calls; the
transmit recording level for CO calls is normal.
☛Depending on the recording device(s), separate cables may be required for the warning
tone and speech path. In this case, connect the warning tone cables to input terminals
T1 and T2 on the ADA-UA Unit. (T3 and T4 are used as the Analogue recorder input.)
☛If remote control of the recorder is necessary, the record start/stop control is provided by
connecting to T5 (or T7) and T6 on the ADA-UA Unit. (Connecting to T5 or T7 is
determined by the specifications of the recorder.)
☛If a warning Tone is provided from the recording equipment, it should be input via T3 and
T4 on ADA-UA Unit. (Do not use T1 and T2 to input Beep Tone.)
☛Conversations cannot be recorded from terminals connected to an APR-UA Unit.
Speakerphone calls through the HFU-UA Unit cannot be recorded.
Table 4-3  ADA-UA Cable Connections (Continued)
Te r m i n a l s
Dip Switch
Default Settings 
						

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The following switch settings should be made on the ADA-UA Unit to enable or disable the
record start warning tone. Switch settings should be made before installing the ADA-UA Unit
in the Multiline Terminal. (Refer to Table 4-4: ADA-UA Unit Switch Settings, Pg 85.) 
Table 4-4  ADA-UA Unit Switch Settings
 
SwitchSettingDescription
SW1–1 OnIf the ADA-UA provides 
control to the recorder, 
SW1-1 should be set to 
On, otherwise set it to 
Off.
SW1–2 Off
Leave Off
SW1–3
and
SW1-4SW1–3
ONSW1–4
ONWarning Tone from 
recording device over 
same wire pair as 
speech path.
SW1–3
OFFSW1–4
OFFWarning Tone from 
recorder or generator 
equipment on dedicated 
wire pair to recorder 
MIC input
SW1–5
and
SW1–6SW1–5
OFFSW1–6
ONInput impedance is 600 
W
SW1–5
ONSW1–6
OFFInput impedance is less 
than 600W 
SW1–7 ONIf warning tone from any 
device is sent to 
telephone
SW1–8 Off
Leave Off
☛Do not connect T1 and T2 when switches 3 and 4 are ON. 
						

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APR-UA Unit (Analogue Port Ringer)
The Analogue Port adapter with Ringing provides an interface for installing Single Line
Telephones, modems, NEC VoicePoint Conferencing unit, and other compatible analogue
devices. The APR-UA Unit also generates ringing signals. By providing ring generation, the
user can install a personal fax machine or an answering machine for convenience. Two
user-adjustable switches are provided on the adapter; one allows for 600W or a
complex impedance interface to devices such as a modem or Single Line Telephone, the
second switch (SW1) is permanently set to position 2. The APR-UA Unit requires an AC
adapter (ACA-UA Unit). If a CTA-UA Unit or the HFU-UA Unit and an APR-UA Unit are both
installed, only one AC adapter is required.
Figure 4-45: APR-UA Unit
Installing an APR-UA Unit on a Multiline Terminal
1. Unplug the telephone cord from the Multiline Terminal.
2. Prepare Multiline Terminal for adapter installation. Refer to Section 9: Preparing
Multiline Terminal for Adapter Installation, Pg 78.
3. Plug the unit into the receptacle connector inside the base plate. Refer to Figure 4-46::
Attaching the Unit to the Multiline Terminal, Pg 86.
Figure 4-46: Attaching the Unit to the Multiline Terminal 
						

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4. Plug the cord of the ACA-UA Unit (AC adapter) into the jack on the APR-UA Unit. Lead
the telephone cord out through the groove in the base as shown in Figure 4-47::
Leading the Telephone Cord out from the Unit, Pg 87.
Figure 4-47: Leading the Telephone Cord out from the Unit
5. Close the base plate, lead the AC adapter cord out through the hole, and snap the
cover in place.
Figure 4-48: Closing the Base Plate Cover
6. Plug in the power cord on the AC adapter and the telephone cord in the jack.
Switch Settings
There are two switch settings on the APR-UA Unit. 
Figure 4-49: APR-UA Unit Switches 
						

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The following table lists the switch settings for SW1 and SW3.
Connecting Cables on the APR-UA Unit
Plug the telephone cord from the Single Line Telephone into the modular jack on the APR-
UA Unit. 
Limit the cable length from the APR-UA Unit to the Single Line Telephone to a maximum of
15 metres. 
Figure 4-50: Connecting Cables on the APR-UA Unit
Switch Description
SW1–1
Do not use
SW1–2A Single Line Telephone and Multiline Terminal 
are used alternately. 
(The Multiline Terminal and the APR-UA Unit 
share the same B1 channel.)
SW3–1Sets impedance to 600W for devices 
such as modems or facsimile machines
SW3–2Used for complex impedance devices such as 
Single Line Telephones.