DISCOVER D904 User manual
1 Headset ‘ON/OFF’ LED
2 Headset ‘ON/OFF’ button
3 Power LED
4 Headset charge LED
5 Headset ‘IN USE’ LED
6 Battery LED indicator
7 Telephone switch with
ON/OFF LED (‘TEL’ LED)
8 PC/USB switch with ON/OFF LED
(‘PC/USB’ LED)
9 Microphone volume up
10 Microphone volume down
11 USB port
12 AUX port
13 Power socket
14 Handset connector
15 Telephone connector (‘TEL’ port)
16 Wiring switch
17 Receive volume up/down
18 Mute button
19 Battery charging slot
20 Battery remove button
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Contents:
1. Product description
2. Setup
2.1 Connecting to a telephone or terminal with
a headset port
2.2 Connection to a telephone or terminal
without a headset port
2.3 Connecting to a compatible handset lifter
(refer to your supplier)
2.4 Connecting to a computer USB port
2.5 Wearing style
3. Operation
3.1 Making and receiving calls
3.1.1 Making an outgoing call in telephone mode
3.1.2 Receiving an incoming call in telephone mode
3.1.3 Making an outgoing call in VOIP mode
3.2 Adjusting the ring volume
3.3 Muting the headset microphone
3.4 Headset transmitting volume setting
3.5 Adjusting headset receive volume
3.6 Out of range and reconnection
3.7 Battery hotswap
3.8 Battery level indication
3.9 Making a conference call
3.10 Overview of audio signals
3.11 Registering a new headset to the base
3.12 Using the W880 for call recording
4. Troubleshooting
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1. Product description
The Discover D904 is a fully wireless
headset solution offering the user the
ability to work ‘handsfree’ with true wireless
mobility.
Main features:
• DECT wireless headset solution
• Convertible into two wearing styles:
headband & earhook
• Up to 6.5 hours talk time without recharging
• Auxiliary port for connecting handset lifter
or electronic hookswitch device
• Noise cancelling microphone for reduced
background noise
• Secure high quality audio
• Receive volume control on headset
• Mute button on headset
• Talk button with LED on headset
• Range up to 400m
• ‘Out of range’ warning
• DECT/GAP compatible
• Second battery storage/charging point on base
• PC/USB connectivity (*)
• Three way conferencing by connecting
additional headset
* Will connect to Apple Mac or PC running
Windows 98, Windows 2000, Windows XP,
Windows Vista and Windows 7.
2. Setup
• Connect the power adaptor supplied with the
product to the base unit (13). The base power
LED (3) will light. If the base is in telephone
mode, the ‘TEL’ LED (7) will light, otherwise,
the ‘PC/USB’ LED (8) will light.
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• Install the battery into the headset if not tted.
The little line on the battery has to match the
line on the battery slot, otherwise the battery
will not t.
• The headset LED (1) will turn on for about
2 seconds then turn o. Now your headset is in
standby mode.
NOTE: The rst time you use your headset, it is
recommended that the headset is charged for a
minimum of 4 hours before use.
2.1 Connecting to a telephone or terminal with a
headset port
• Using the headset cord supplied with the
product, connect the ‘TEL’ port (15) on headset
base with the headset port on your telephone.
• Use the power adaptor supplied with the
product to connect the headset base (13) to a
power socket.
• You may need to adjust the wiring switch (16)
that is located on the side of the headset base
to nd the correct wiring for your device.
2.2 Connecting to a telephone or terminal without
a headset port
• Using the headset cord supplied with the
product, connect the ‘TEL’ port (15) on headset
base with the ‘handset’ port on your telephone.
• Connect the telephone handset cord to the
handset (14) port on the headset base.
• Use the power adaptor supplied with the
product to connect the headset base (13) to a
power socket.
• You may need to adjust the wiring switch (16)
that is located on the side of the headset base
to nd the correct wiring for your device.
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2.3 Connecting to a DHL110 handset lifter (sold
separately)
• Fit the handset lifter to your telephone as
indicated in its user guide.
• Connect the handset lifter to the ‘AUX’ port (12)
located on the back of the headset base.
With the handset lifter connected, you will be able
to answer and end calls using the button located on
the headset while away from your desk.
2.4 Connecting to a computer USB port
• Connect the USB cable supplied with the
product to the ‘USB’ port (11) on the back of
the headset base and to a available USB port
on your computer.
• The computer should automatically recognise
the device and install the correct drivers.
2.5 Wearing style
Your Discover D904 headset is supplied
with a headband and an earhook.
• Headband
This can be attached to the headset to allow
for either left or right ear wearing and the size
can be adjusted to allow the user to nd the
most comfortable t.
• Earhook
This can also be used on either the left or
right ear.
To remove the headband or earhook: put your
thumb on the speaker and carefully pull the
headband or earhook with your other hand
towards you.
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3. Operation
3.1 Making and receiving calls
3.1.1 Making an outgoing call in telephone mode
• Ensure that the‘TEL’ button (7) on the front of
the headset base is selected.
• Lift the headset from the base to start the
call. If you are already wearing the headset
press the headset’s ‘ON/OFF’button (2). The
base ‘IN USE’ LED (5) will light. If a handset lifter
or electronic hookswitch device is connected
to the headset base, the line will be seized.
Otherwise, you will also need to activate the
headset port via your telephone terminal.
• Dial the telephone number on the telephone
terminal
• After nishing the call, replace the headset on
the base or press the ON/OFF button (2) to
disconnect. The ‘IN USE’ LED (5) will turn o.
3.1.2 Receiving an incoming call in telephone mode
• If there is an incoming call from the telephone
line and the headset base is connected to a
handset lifter or electronic hook switch device,
the ‘TEL’ LED (7) and headset LED (1) will ash,
also a ring tone will be heard on the headset.
• Lift the headset from the base to answer the
call. If you are already wearing the headset
press the headset’s ‘ON/OFF’button (2). The
base ‘IN USE’ LED (5) will light. If a handset lifter
or electronic hookswitch device is connected
to the headset base, the line will be seized.
Otherwise, you will also need to activate the
headset port via your telephone terminal.
• To end the call, replace the headset on the base
or press the headset ON/OFF button (2).
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3.1.3 Making an outgoing call in VOIP mode
• Ensure that the‘VOIP’ button (8) on the front of
the headset base is selected.
• Lift the headset from the base or press the
headset’s ON/OFF button (2) if you are already
wearing it and the base ‘IN USE’ LED (5) will
light.
• After nishing your VOIP call, press the
ON/OFF button (2) to disconnect.
The headset LED (1) and the base
‘IN USE’ LED (5) will turn o.
3.2 Adjusting the ringing volume
When the headset is ringing to indicate an
incoming call, you can adjust the ring volume by
moving the rocker switch (17) at the back of the
headset.
3.3 Muting the headset microphone
To mute the headset microphone when on a call,
press the mute button (18) on the back of the
headset. While the headset is in mute mode, a short
beep will be heard on the headset every 8 seconds.
Press the mute button (18) again to release the
mute.
3.4 Headset transmitting volume setting
During a call you can adjust the transmit volume
of the headset by using the two buttons (9 and 10)
located on the back of the headset base.
3.5 Adjusting headset receive volume
Use the rocker switch (17) at the back of the headset
to adjust the receive volume on your headset. You
will hear a beep sound for each volume step up or
down.
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3.6 Out of range and reconnection
You will hear a warning tone in the headset when
you walk out of range of the base. The headset will
be disconnected from the base and the call will be
automatically placed on hold. If you move back
inside the range of the base the headset will
automatically reconnect and the call will be active
again.
NOTE: If you do not move back inside the base range
within 5 minutes the call will be disconnected.
3.7 Battery – hotswap
The user can “hotswap” the headset battery while
on a call. When the battery is removed from the
headset, the base unit will put the call on hold for a
maximum of 5 minutes.
When the new battery is tted to the headset, the
‘IN USE’ LED (1) will turn on and the call will be active
again.
Put the second battery in the battery charging slot
(19) on the top side of the base. The battery can be
removed by sliding the battery remove button (20)
sidewards.
3.8 Battery level indication
The four LEDs (6) on the front of the headset base
indicate the battery level of your headset battery.
Indication Battery level
One LED ashing < 20%
One LED on 20%-40%
Two LEDs on 40%-60%
Three LEDs on 60%-80%
Four LEDs on 80%-100%
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3.9 Making a conference call
Your Discover D904 headset allows a second
headset to be temporarily connected to the
base so that you can have a three way
conference call.
• Setup the call using the primary headset unit.
• Once on the call, place the second IPN
DECT headset unit on the base charger.
• After about one second, the headset
‘IN USE’ LED (1) of the new headset will turn
on and the base ‘IN USE’ LED (5) will ash to
indicate the headset is registering with the
base unit.
• Once the registering has completed, the base
‘IN USE’ LED (5) will stop ashing and the
additional headset LED will ash.
• Once the registration has completed, a
conrmation sound will be heard on the
primary headset.
• Lift the additional headset from the base and
it will enter talk mode. The two headsets are
now in conference mode.
NOTE: The additional headset will only remain
registered to the base for the duration of the call.
After the primary headset has ended the call, the
unit will return to its normal state.
The Discover D904 headset also allows you to make
a conference call between your normal phone and a
PC or MAC computer.
To activate this option hold down the PC/USB switch
(8) for four seconds. Both LEDs of the PC/USB (8)
and TEL (7) buttons will light. If one of the buttons is
touched again this function will be switched o and
the headset will return to the mode of the button
pressed.
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3.10 Overview of audio signals
Action Audio indication
Low battery 2 rapid beeps (60 sec repeat)
Nearly out of range 2 beeps
Out of range 2 pitch tone
Back in range 4 rapid beeps
Receiver volume up/
down
1 beep
Mute on 2 pitch tone (8 sec repeat)
Mute o 1 beep
Ringer (EH device) Multi tone (2 sec repeat)
3.11 Registering a new headset to the base
You can register a new primary headset unit to your
Discover D904 base using the following procedure:
• Press and hold the ‘TEL’ button (7) on the
headset base for ve seconds to enter the
registration mode. The‘TEL’ LED (7) will ash to
indicate it is now in registration mode.
• Press and hold the ‘mute’ button (18) on the
back of the headset for ve seconds for the
headset to enter the registration mode. The
headset LED (1) will ash twice and then
light-up during the registration mode period.
• The headset will now be registered to the
base which will take around 30 seconds. When
the registration has completed, the headset
LED and the base ‘TEL’ LED (7) will stop ashing.
3.12 Using the Discover D904 for call recording
With the D904 it is possible to connect a normal
telephone call to the USB port of your computer.
This feature can be used to record phone calls with
voice recording software on your PC.
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On the CD-Rom that came with your headset you
will nd Vidicode demo call recording software
which can be used for this purpose.
To activate the recording option hold the PC/USB
switch (8) for four seconds. Both LEDs of the
PC/USB (8) and TEL (7) buttons will light. The D904
is now ready for use with recording software. If
one of the buttons is touched again this function
will be switched off and the headset will return to
the mode of the button pressed.
4. Troubleshooting
Q. I have connected my headset base to my
telephone terminal but the headset is not
working.
A. Make sure that you have the removable battery
correctly tted in the headset and that the
battery has been properly charged.
Q. The headset is working but I cannot hear
telephone calls correctly.
A. Ensure that you have the correct wiring setting
by adjusting the switch (16) on the side of the
headset base.
Q. When the headset’s ON/OFF button (2) is
pressed, the handset lifter lifts the handset but
I cannot hear the call on the headset.
A. Ensure that the headset base is connected to
the telephone’s handset port and not the
headset port (if the telephone has one).
Health and safety instructions
Please read the following safety and operational
in-structions before using your Discover Headsets
product. Please keep these instructions for your
reference. When using this product, these basic
safety precautions and warnings should be
followed to reduce the risk of fire, electric shock,
injury to persons and damage to property.
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General
Operating, charging and storage temperature is 0°C
to 40°C (32°F to 104°F).
Warnings
• CHILDREN. Never allow children to play with
the product – small parts may be a choking
hazard.
• Plug the AC adaptor into the outlet nearest the
equipment that is easily accessible.
•To reduce the risk of electric shock, explosion
or fire, use only the supplied charger or Class 2
AC adaptor to charge the headset. Ensure that
the voltage rating (e.g. 120V, 60 Hz)
corresponds to the power supply you intend to
use.
• Do not disassemble the product or AC adaptor
as this may expose you to dangerous voltages
or other risks. Incorrect reassembly can cause
electric shock or fire when the product is
subsequently used.
• Do not insert anything into the product
because this may cause damage to the internal
components or cause injury to you.
• Avoid contact with liquids. Do not locate this
product near water, for example, near a
bathtub, or sink, in a wet basement, or near a
swimming pool.
• Discontinue use of product and contact
Discover headsets if the product overheats, has
a damaged cord or plug, if the product has
been dropped or damaged, or if the product
has come into contact with liquids.
• This product should never be placed over or
near a heat register and should not be placed
in locations which do not have proper
ventilation.
• If you experience a skin irritation after using
this product, discontinue use and contact
Discover Headsets
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• Exposure to high volume sound levels or
excessive sound pressure may cause temporary
or permanent damage to your hearing.
Although there is no single volume setting
that is appropriate for everyone, you should
always use your headset with the volume set at
moderate levels and avoid prolonged exposure
to high volume sound levels. The louder the
volume, the less time is required before your
hearing could be aected. You may experience
dierent sound levels when using your headset
with dierent devices. The device you use and
its settings aect the level of sound you hear.
If you experience hearing discomfort, you
should stop listening to the device through
your headset and have your hearing checked
by your doctor. To protect your hearing, some
hearing experts suggest you:
1. Set the volume control in a low position
before putting your headset on your ear
and use as low volume as possible.
2. Avoid turning up the volume to block out
noisy surroundings. Whenever possible, use
your headset in a quiet environment with
low background noise.
3. Limit the amount of time you use headsets
at high volume levels.
4. Turn the volume down if the sound from the
headset prevents you from hearing people
speaking near you.
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To avoid the risk of electric shock, explosion, re or
leakage of corrosive or toxic chemicals, please
observe the following charging and battery
warnings:
Charging warnings
• Use only the charger supplied by Discover
Headsets to charge the product. Do not use
the charger for any other purpose. Ensure that
the voltage rating corresponds to the power
supply you intend to use.
• Charge the headset according to the
instructions supplied with the unit.
• Plug the AC adaptor or charger into an outlet
that is near the equipment and will be easily
accessible.
• Never charge the battery where the
temperature may fall below 0°C (32°F) or rise
above 40°C (104°F).
• Avoid charging the battery while it is
unattended.
Headset battery warnings
The headset is equipped with a replaceable battery.
To reduce the risk of re or injury to persons read
and follow these instructions.
Do not attempt to open battery in a re.
The battery may explode. Check the local laws for
disposal instructions.
Do not open or mutilate the battery. There may be
corrosive materials which can cause damage to eyes
or skin and may be toxic if swallowed.
Charge the headset according to the instructions
supplied with the headset.
RECYCLING: the battery used in your headset must
be recycled or disposed of properly. Contact your
local recycling centre for proper disposal of your
headset.
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Europe Declaration
This product is CE marked according to the
provisions of the R and TTE Directive (99/5/EC).
This product is in compliance with the essential
requirements and other relevant provisions of
Directive 1999/5/EC.
Safety: EN 60 950-01:2006+A11:2009
EMC: EN 301 489-6 V1.3.1:2008-08
EN 301 489-1 V1.8.1:2008-04
EN 55022:2006+A1
EN 55024:1998+A1+A2
EN 61000-3-2:2006
EN 61000-3-3:5005+A1+A2
RF: EN 301 406 V2.1.1:2009-07
RF Safety: EN 50360:2001 (Headset)
EN 50385:2002 (Base)
Only to be used together with the delivered certied
AC main adaptor with a GS mark.
Within the EU this product is intended to be used in
Austria, Belgium, Denmark, Finland, France,
Germany, Greece, Ireland, Italy, Luxembourg,
The Netherlands, Portugal, Spain, Sweden,
United Kingdom, Cyprus, Czech Republic, Estonia,
Hungary, Latvia, Lithuania, Malta, Poland, Slovakia
and Slovenia and within EFTA in Iceland, Norway
and Switzerland.
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