Clarity Professional C4205 User manual

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2.4 GHz Cordless Telephone
Featuring Digital Clarity Power™ Technology
C4205 User Guide

TABLE OF CONTENTS
Important Safety Instructions ..............................4
Features ..........................................................8
Choosing a Location .......................................10
Telephone Installation ......................................12
Handset Battery .............................................13
Telephone Handset Features ............................15
Telephone Base Features .................................17
Using Your Telephone .....................................21
Memory Storage ............................................23
Maintenance and Care ...................................25
Troubleshooting .............................................25
Regulatory Compliance ...................................28
Warranty and Service .....................................33

4
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
When using your telephone equipment, basic
safety precautions should always be followed to
reduce the risk of fire, electric shock and injury to
persons including the following:
1. Read and understand all instructions.
2. Follow all warnings and instructions marked
on the telephone.
3. Do not use this telephone near a bath tub,
wash basin, kitchen sink or laundry tub, in
a wet basement, near a swimming pool or
any where else there is water.
4. Avoid using a telephone (other than a cord-
less type) during a storm. There may be a
remote risk of electrical shock from lightning.
5. Do not use the telephone to report a gas leak
in the vicinity of the leak.
6. Unplug this telephone from the wall outlets
before cleaning. Do not use liquid cleaners
or aerosol cleaners on the telephone. Use a
damp cloth for cleaning.
7. Place this telephone on a stable surface.
Serious damage and/or injury may result if
the telephone falls.
8. Do not cover the slots and openings on this
telephone. This telephone should never be
placed near or over a radiator or heat
register. This telephone should not be placed
in a built-in installation unless proper ventila-
tion is provided.
9. Operate this telephone using the electrical
voltage as stated on the base unit or in the
owner’s manual. If you are not sure of the
voltage in your home, consult your dealer or
local power company.

5
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
10. Do not place anything on the power cord.
Install the telephone where no one will step
or trip on the cord.
11. Do not overload wall outlets or extension
cords as this can increase the risk of fire or
electrical shock.
12. Never push any objects through the slots in
the telephone. They can touch dangerous
voltage points or short out parts that could
result in a risk of fire or electrical shock.
Never spill liquid of any kind on the
telephone.
13. To reduce the risk of electrical shock, do not
take this phone apart. Opening or removing
covers may expose you to dangerous volt-
ages or other risks. Incorrect reassembly can
cause electric shock when the appliance
is subsequently used.
14. Unplug this product from the wall outlet and
refer servicing to the manufacturer under
the following conditions:
A. When the power supply cord or plug is
frayed or damaged.
B. If liquid has been spilled into the product.
C. If the telephone has been exposed to rain
or water.
D. If the telephone does not operate normally
by following the operating instructions.
Adjust only those controls that are covered
by the operating instructions. Improper
adjustment may require extensive work
by a qualified technician to restore the
telephone to normal operation.
E. If the telephone has been dropped or the
case has been damaged.

6
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
F. If the telephone exhibits a distinct change
in performance.
15. Never install telephone wiring during a
lightning storm.
16. Never install telephone jacks in wet locations
unless the jack is specifically designed for
wet locations.
17. Never touch uninsulated telephone wires or
terminals unless the telephone line has been
disconnected at the network interface.
18. Use caution when installing or modifying
telephone lines.
19. Use only the power cord and batteries
indicated in the manual. Do not dispose
of batteries in a fire. They may explode.
Check with local codes for possible special
disposal instructions.
20. Plug the AC adaptor into the outlet that is
nearest and most accessible to the telephone.
SAFETY INSTRUCTIONS FOR BATTERIES
Caution: Risk of explosion if battery is replaced
by an incorrect type. Dispose of used batteries
according to the instructions.
1. Use only the approved battery pack in the
handset of your cordless phone.

7
IMPORTANT SAFETY INSTRUCTIONS
For Handset Unit: 3.6V 600mAHr
NiMH Rechargeable Battery
Sanik Battery Co. Ltd.: 3SNAAA60HSJ1
GPI International Ltd.: GP60AAAH3BMJZ
For Base Unit:
Four (4) AA alkaline batteries
2. Do not dispose of the battery in a fire as it
may explode. Check with local codes for
possible special disposal instructions.
3. Do not open or mutilate the battery.
Released electrolyte is corrosive and may
cause damage to the eyes and skin. It may
be toxic if swallowed.
4. Exercise care in handling batteries in order
not to short the battery with conducting
materials such as rings, bracelets and keys.
The battery or conduction material may
overheat and cause burns.
5. Charge the battery (ies) provided with or
identified for use with this product only in
accordance with the instructions and limit-
tions specified in this manual.
6. Observe proper polarity orientation between
the battery pack and the battery charger.
SAVE THESE INSTRUCTIONS

8
FEATURES
2
34
1
5
Telephone Base
1. Handset Page
2. Ringer Volume
3. Ringer Style
4. Ringer On/Off
5. Antenna/Visual Ringer

9
FEATURES
10
1
2
3
5
6
7
8
9
11
12
13
14
4
15
16
Handset
1. Neckloop Jack
2. Handset Volume
3. Boost
4. Dial Pad
5. Emergency Buttons
6. Talk
7. Channel
8. Memory
9. Flash
10. Mute
11. Redial/Pause
12. Handset Ringer Off/Vibe/On
13. Handset Tone
14. Belt Clip
15. Headset Jack
16. Antenna/Visual Ringer

10
CHOOSING A LOCATION
1. This phone requires a modular phone
jack (RJ11C) and a standard 120V AC
wall outlet.
2. Plug the AC Adapter directly into outlet.
3. Do not plug other appliances into the
same outlet or have outlet controlled by a
wall switch.
4. Choose a location that is out of the way of
normal activities.
CAUTION: USE ONLY WITH CLASS 2
POWER SOURCE 9V DC, 400MA.
Always connect the AC Adapter to the phone
before you connect it to the AC power. When
you finish, disconnect the AC power before you
disconnect it from the phone.
CONNECTING YOUR TELEPHONE
Carefully remove your cordless telephone from
its box. If there is any visible damage, do not
attempt to operate this equipment. Return it to
the place of purchase. Check to be sure that you
have all items that come with your telephone. You
should have a HANDSET, BASE UNIT, BATTERY,
AC ADAPTER, TELEPHONE LINE CORD, BELT
CLIP and OWNERS MANUAL.
If at any time you have questions about
your telephone please contact our Customer
Service Department at: 1-800-552-3368
or 423-622-7793.
9V DC
400 mA
TEL
USE ONLY WITH CLASS
(CLASSE) 2 POWER SOURCE
Connecting telephone
line cord
9V DC
400 mA
TEL
USE ONLY WITH CLASS
(CLASSE) 2 POWER SOURCE
Connecting AC Adapter

11
TABLE/DESK TOP INSTALLATION
CAUTION: Disconnect the telephone line cord
before connecting or disconnecting the battery
backup in the wall mount bracket.
1. Plug one end of the supplied modular tele-
phone line cord into the jack marked TEL
located on the back of the telephone base
as shown in the diagram.
2. Plug the modular telephone line cord’s other
end into a modular phone jack.
3. Insert the supplied AC Adapter’s plug into the
jack marked 9V DC 400mA located on the
back of the telephone base.
4. Plug the adapter into a standard 120V AC
power (electrical) outlet.
5. Align the mounting bracket on the back of
the base so that the black rubber feet are
towards the bottom of the phone. Insert the
bracket’s tabs into the slots and secure the
bracket by sliding it upward.
6. Lift the base’s antenna to a vertical position.
7. Set the TONE/PULSE switch located on the
back of the base to correct dialing mode.
Please check with your local Phone Company
if uncertain of the type of service.
8. Place handset in the cradle to begin
initial charging.

12
WALL MOUNTING INSTALLATION
CAUTION: Disconnect the telephone line cord
before connecting or disconnecting the battery
backup in the wall mount bracket.
The base unit may be mounted on a standard
wall plate.
1. Plug one end of the supplied short modular
telephone line cord into the TEL jack located
on the back of the base of the phone.
2. Insert the plug of the AC adapter into the
jack marked DC 9V 400mA located on the
back of the telephone base.
3. Align the mounting bracket on the back of
the base so that the black rubber feet are
towards the bottom of the phone. Insert the
bracket’s tabs into the slots and secure the
bracket by sliding it upward.
4. Plug the short modular telephone line cord
into the wall plate jack, then align the mount-
ing bracket’s keyhole slots with the wall plate
studs and slide the base of the phone down-
ward to secure it on the wall.
5. Plug the adapter into a standard AC power
(electrical) outlet.
6. Press and lift out the handset holder tab, turn
it around so the narrow tab end extends
out and slide back into its slot. This will hold
the handset in the cradle when the phone is
wall mounted.
7. Lift the base’s antenna to a vertical position.

13
8. Set the Tone/Pulse switch located on the
end of the base to correct dialing mode.
Please check with your local Phone Com-
pany if uncertain of the type of service.
9. Place handset in the cradle to begin initial
charging. Remember, you must charge the
phone for at least 12 hours before you use
the phone for the first time.
Note: Remember, you must charge the phone for
at least 12 hours before you use the phone for
the first time.
HANDSET BATTERY INSTALLATION
The C4205 uses a 3.6Volt 600mAh NiMH
rechargeable 3 cell (AAA Type) battery that is
included with your unit.
Handset Battery must be connected before
beginning initial charging
To Install a New Battery
1. Remove battery cover
2. Install new battery
3. Connect battery pack
4. Replace battery cover
5. Charge for 12 hours before first use
Handset Battery Charging
1. Place the handset in the base. The
CHARGE LED on the base will light RED.
2. After the batteries are fully charged,
check for dial tone by pressing TALK on
the handset.
Note: The battery in the
handset must be fully
charged for 12 hours
before using the tele-
phone for the first time.
Installing and
connecting battery
Battery
Connector
Battery
Pack Plug
Battery
Compartment
Cover

14
Low Battery
When the handset battery gets low, there will be
two (2) beeps every thirty (30) seconds. If the
battery becomes low while you are on a call, you
will be disconnected after about two (2) minutes.
Terminate the call and recharge the battery. To
recharge the battery pack, place the handset in
the base.
1. Make sure the contact points are touching
and the CHARGE LED is lit.
2. Be careful not to short battery with
Conducting materials such as rings,
bracelets and keys.
Battery Life
A fully charged battery provides an average talk
time of about four (4) hours, or standby time of
about (8) days. Talk time and standby time may
vary depending on operating conditions.
Talk Time: about
four (4) hours
Standby Time: about
eight (8) days

15
TELEPHONE HANDSET
Digital Clarity Power Technology
With Digital Clarity Power, the high frequency
sounds are amplified more than the low fre-
quency sounds so words are not just louder, but
clearer and easier to understand. It also provides
intelligent amplification to make soft sounds
audible, while keeping loud sounds bearable.
BOOST – Clarity Power On/Off
The C4205 has a button that controls the loud-
ness of the receiver. Once the BOOST button is
pressed, an extra level of amplification is added
over the entire range of the volume control.
The TALK button will light ORANGE to indicate
the CLARITY POWER feature is activated.
WARNING: When the TALK button is lit
ORANGE volume may be at a high level. To
protect hearing, lower the volume control to
minimum before using.
Volume Control
The dial controls the level of volume the handset
and headset receive. The volume dial provides
up to 15 decibels of volume before the CLARITY
POWER button is activated. Once the CLARITY
POWER button is pressed, the C4205 will pro-
vide up to 40 decibels of amplification.
Tone Switch
Adjusting the TONE switch allows you to custom-
ize your hearing experience. Since we all have
different hearing preferences we suggest explor-
ing each setting to find the one most comfortable
for you.
Boost On: Talk button
is ORANGE
Boost Off: Talk button
is GREEN

16
Handset Ringer
Set the switch marked Ringer OFF/VIBE/ON
located on the side of the handset. When VIBE is
selected the handset will ring and vibrate when
receiving an incoming call. The ringer switch
must be set to ON or VIBE for the handset to ring.
NOTE: If both handset and base ringers are set to
OFF, the visual ringer will flash to indicate there is
an incoming call.
Headset Jack
You can use this telephone hands-free when you
install a 2.5mm headset (purchased separately).
To install, plug the headset into the HEADSET
JACK at the top of the handset. While in headset
mode, the volume of headset is controlled by the
telephone and the handset’s earpiece and micro-
phone are disconnected.
Ordering a Headset
In the event you wish to purchase a headset for
your C4205, please contact Plantronics at 1-800-
544-4660 for location near you. We recommend
using the Plantronics M110 or M130 headset.
Belt Clip
You may choose to use the optional belt clip with
your handset.
1. To attach slide belt clip down onto groves.
Press the tabs on the belt clip into the slots
to attach.
2. To remove, lift one side of the belt clip with
your thumbnail and push back.
Hearing Aid Compatibility
The handset has a special coil inside of it to
couple the sound to hearing aids equipped with
T-Switches/T-Coils.

17
TELEPHONE BASE
Ringer Volume
The base ringer volume adjustments are located
on the side of the telephone base.
Pressing the UP ( ) key on the base increases
the ringer sound by one level while pressing the
DOWN ( ) key reduces the sound by one level.
There are a total of six levels from maximum
to minimum. The ringer will sound for two (2)
seconds while choosing a ringer volume, to allow
the user to make a choice.
Ringer Style
The base ringer style adjustments are located on
the side of the telephone base. The style of ring
can be adjusted by pressing the RING STYLE
button. Six (6) styles are available allowing you
to customize your ring. The ringer will sound for
two (2) seconds while choosing a ringer style, to
allow the user to make a choice.
Visual Ringers
Visual ringers are located in both the handset
antenna and the base of the telephone. When an
incoming call is received, these lights will flash.
The handset visual ringer will also stay lit while
the phone is in use.

18
BOOST ON/OFF Switch
This switch will disable the reset feature of the
BOOST Clarity Power button as follows:
ON – When the BOOST ON/OFF switch is set
to ON, the Boost function will be ON every time
a call starts, and will default to ON every time
the phone hangs up. During a call, the BOOST
Clarity Power button can toggle the Clarity Power
ON or OFF according to the user’s needs.
OFF – When the BOOST ON/OFF switch is set
to OFF, the Boost function will be OFF every time
a call starts, and the user will need to press the
BOOST Clarity Power button in order to gain the
extra level of amplification. If the phone hangs
up, the Clarity Power will reset to OFF. During a
call, the BOOST Clarity Power button can toggle
the Clarity Power function ON or OFF according
to the user’s needs.
CAUTION: VOLUME WILL BE LOUD
WHEN BOOST SWITCH IS SET TO “ON”.
Pulse/Tone
Slide the switch to the type of telephone service
you have; TONE for touch-tone service or PULSE
for rotary dialing. Please check with your
local telephone company if uncertain of the
type of service.
Flash
The FLASH button is activated to use custom
calling services such as Call Waiting or Three-
Way Calling. Please contact your local telephone
company for information on these services.

19
Mute
The MUTE button allows the user to conduct a
private conversation that you do not want the
person on the other end to hear. While in the
mute mode, the MUTE button will illuminate RED
and the microphone in the handset is disabled.
Pressing the MUTE button again will disengage
the MUTE feature.
Redial/Pause
Press the RD/P button to redial the last number
dialed. Pressing the RD/P button while storing a
telephone number will insert a four (4) second
pause. This is commonly used when storing
both the telephone number and an extension
or PIN number.
Battery Back-up
Installing four (4) AA Alkaline batteries into the
desk/wall mount bracket attached to the tele-
phone base will offer you a limited amount of
time to continue operating your telephone in the
event of a power failure.
To Install Battery Back-up Batteries
1. Disconnect telephone line cord and
remove desk/wall mount bracket from
telephone base.
2. Disconnect battery back-up connector from
the telephone base.
3. Install four (4) AA Alkaline batteries
with negative (-) end of battery touching
the spring.
4. Connect battery back-up connector to
terminal on bottom of telephone base.

20
5. Install desk/wall mount bracket to
telephone base.
To Replace Battery Backup Batteries
1. Disconnect telephone line cord and
remove desk/wall mount bracket from
telephone base.
2. Disconnect battery back-up connector from
the telephone base.
3. Remove batteries from desk/wall
mount bracket.
4. Install four (4) AA Alkaline batteries with
negative (-) end of battery touching
the spring.
5. Connect battery back-up connector to
terminal on bottom of telephone base
6. Install desk/wall mount bracket to
telephone base
After installing the four (4) AA Alkaline batteries
please refer to the chart below:
Power Supply Power LED Status
AC adapter and Steady Green
good batteries
AC adapter and Steady Red
no batteries
Power failure and Slow flashing red
good batteries
Power failure and Fast flashing red
bad batteries