Clarity A Division of Plantronics C420 900MHz 40 Channel Cordless Phone w/ CID User Manual C420 6 16 05 indd

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900 MHz Cordless Telephone
with Caller ID
Featuring Clarity ® Power™ Technology
Clarity 420 User Guide
CL
AR
ITY
C4
20
Ñ
Ç
Ç
Table of Contents
Safety Instructions . . . . . . . . . . . . . . . .
Features . . . . . . . . . . . . . . . . . . . . . . .
Getting Started . . . . . . . . . .
Choosing a Location . . . . .
Installation . . . . . . . . . . . .
Battery Installation . . . . . .
Handset Battery Charging .
Low Battery . . . . . . . . . . .
Battery Life. . . . . . . . . . . .
10
10
10
10
Headset Jack. . . . . . . . . . . . . . . . . . . . 11
Hearing Aid Compatibility. . . . . . . . . . . 11
Quick Reference Guide . . . . . . . . . . . . . 11
Feature Set Up. . . . . . . . . . . . .
Handset. . . . . . . . . . . . . . . .
Set Up Mode . . . . . . . . . . .
Clarity Power Technology . .
Boost Clarity Power On/Off
Volume Control . . . . . . . . .
Handset Ringer . . . . . . . . .
Telephone Base
Boost On/Off
Pulse/Tone. . .
Ringer Volume
Ringer Style . .
12
12
12
14
14
14
14
14
14
15
15
15
Telephone Operations . . . . . . . . . . . . . . 16
Placing a Call . . . . . . . . . . . . . . . . . 16
Answering a Call . . . . . . . . . . . . . . . 16
Temporary Tone . . . . .
Visual Ringers . . . . . .
Flash . . . . . . . . . . . . .
Mute . . . . . . . . . . . . .
Redial/Pause . . . . . . .
LCD Display Screen . .
Lighted Key Pad . . . . .
Base Lights. . . . . . . . .
Page/Handset Locator.
Channel Operation . . .
Security Code . . . . . .
16
16
16
16
16
17
17
17
17
17
17
Memory Storage . . . . . . . . . . . . .
Memory Storage Locations . . . .
Storing Numbers into Memory . .
Dialing From Memory . . . . . . . .
Editing Numbers in Memory . . .
Deleting Numbers from Memory.
18
18
18
18
18
18
Caller ID Operations. . . .
Viewing Call List. . . . .
Placing a Call from the
Deleting Entries . . . . .
Call Waiting . . . . . . .
19
19
20
20
20
...
...
List
...
...
Care. . . . . . . . . . . . . . . . . . . . . . . . . . 21
Troubleshooting . . . . . . . . . . . . . . . . . . 21
Regulatory Compliance. . . . . . . . . . . . . 23
Warranty and Service. . . . . . . . . . . . . . 26
Important Safety 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 bathtub,
wash basin, kitchen sink or laundry tub, in a
wet basement, near a swimming pool or anywhere else there is water.
4. Avoid using a telephone (other than a
cordless 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 ventilation 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.
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 voltages 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
SAVE THESE INSTRUCTIONS
Important Safety Instructions
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.
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 un-insulated 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.
For Handset Unit: 3.6V 600mAHr NiMH
Rechargeable Battery GP60AAAH3BMJZ
GPI International Ltd
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 limitations specified in this manual.
6. Observe proper polarity orientation
between the battery pack and the
battery charger.
SAVE THESE INSTRUCTIONS
Features
Handset
1. Antenna/Visual Ringer/
New Call Indicator
9. Flash Button (FLASH)
10. Mute Button (MUTE)
2. 2.5 mm Headset Jack
11. Redial/Pause Button (RD/P)
3. Key Pad
12. Temporary Tone Button (*)
4. Handset Charging Contacts
13. Handset Ringer Off/On
5. Channel Button (CH)
14. BOOST Clarity Power
6. Talk Button (TALK)
15. Volume Control
7. Memory Button (MEM)
8. Emergency Memory Storage Button
16. Up/Down
16
15
13
12
11
14
10
Features
Top of Base/Handset Back
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Visual Ringer
Charging Contacts
Base Antenna
Power LED (RED)
In Use/Charge LED (GREEN/RED)
Page
Call
Scroll Up
Scroll Down
Delete
LCD
11
10
8/9
CL
AR
ITY
C4
20
Features
Base Side and End
1. Ringer Off/On
2. Volume Up
3. Volume Down
4. Ring Style
5. Pulse/Tone
6. BOOST On/Off
7. AC (Electrical) Adapter Jack
8. Telephone Line Jack
RING
ER O
FF
ON
VOLU
ME
RING
STYLE
Getting Started
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.
USE ONLY WITH CLASS TWO
POWER SOURCE
PULSE/TONE
BOOST
ON/OFF
9VDC
500mA
TEL
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.
INSTALLATION
Connecting Your Telephone
Carefully remove your cordless telephone
from it’s 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, AC ADAPTER, TELEPHONE LINE CORD, BELT CLIP AND OWNERS
MANUAL. A BATTERY is also included and is
located in the battery compartment.
Diagram A: Table/Desktop Installation
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.
Table/Desktop Installation
1. Plug one end of the supplied modular
telephone line cord into the jack marked
TEL located on the back of the telephone
base as shown in Diagram A.
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. Lift the base’s antenna to a vertical
position.
Getting Started
6. 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.
7. Place handset in the cradle to begin
initial charging.
WALL MOUNTING INSTRUCTIONS
The base unit may be mounted on a standard
wall plate.
1. With the back of the unit facing up insert
the supplied mounting bracket’s tabs into
the base’s lower tab slots in then direction of WALL MOUNT marked on the
bracket, then press down on the brackets
clips and insert them into the clip slots.
2. 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.
3. Insert the plug of the AC adapter into the
jack marked DC 9V 400mA located on
the back of the telephone base.
4. Route the adapter’s cord through the
narrow groove located on the back of
mounting bracket to secure the cord.
5. Plug the short modular telephone line
cord into the wall plate jack, then align
the mounting bracket’s keyhole slots with
the wall plate studs and slide the base of
the phone downward to secure it on
the wall.
6. Plug the adapter into a standard AC
power (electrical) outlet.
7. 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.
8. Lift the base’s antenna to a vertical
position.
9. 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.
10. 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.
Diagram B: Wall mounting
Note: Remember, you must charge the
phone for at least 12 hours before you
use the phone for the first time.
Getting Started
BATTERY INSTALLATION
Handset Battery Charging
The C420 uses a 3.6Volt 600mAHr NiMH
rechargeable 3 cell (AAA Type) battery that is
included with your unit.
1. Place the handset in the base. The
CHARGE LED on the base will
light RED.
HANDSET BATTERY MUST BE CONNECTED
BEFORE BEGINNING INITIAL CHARGING.
2. After the batteries are fully charged,
check for dial tone by pressing TALK
on the handset.
To connect battery, remove battery compartment cover and connect battery pack plug
into the battery connector as shown
in Diagram C.
Low Battery
When the handset battery gets low, there will
be two (2) beeps every thirty (30) seconds
and the TALK button will flash. 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.
The battery charge can also be monitored via
the battery charge icon. This icon appears
while the phone is in the stand by mode and
indicates the condition of the batteries.
Diagram C: Installing and Connecting Battery
The battery in the handset must be fully
charged for 12 hours before using the
telephone for the first time.
To Install a New Battery:
1.
2.
3.
4.
5.
10
Remove battery cover
Install new battery
Connect battery pack
Replace battery cover
Charge for 12 hours
before first use
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.
Getting Started
Headset Jack
HANDSET
You can use this telephone hands-free when
you install a 2.5 mm headset (purchased
separately). To install, plug the headset into
the HEADSET JACK at the top of the handset.
Set Up Mode
While in headset mode, the volume of
headset is controlled by the telephone and
the handset’s earpiece and microphone
are disconnected.
Ordering a Headset: In the event you
wish to purchase a headset for your Clarity
420, please contact Plantronics at
1-800-544-4660 for location near you.
We recommend using the Plantronics
M110 or M130 headset.
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.
Quick Reference Guide
A pullout quick reference guide is located on
the bottom of your C420. It will allow you
to quickly reference key operations of your
phone and also record the frequently dialed
numbers and emergency numbers you may
have stored into your telephone.
NOTE: In Set Up, if there is no input within
30 seconds, the program will default to the
last selection in that mode (e.g., Language)
and the C420 will return to Standby. If at
any time you want to exit Set Up and return
to Standby, press FLASH.
To enter Setup mode press and hold the
CALL button for three (3) seconds.
Setting Language
Default: English
1. Press and hold CALL for three
(3) seconds to enter the Set Up
mode. The Caller ID display will
read, “SET LANGUAGE.”
2. Press CALL once to enter the
Language selection mode. The
current selected language will flash.
3. Press UP (▲) or DOWN (▼) to scroll
through the language options. The
displayed language will change to
“FRENCH” or “SPANISH.”
4. Press CALL to select the
language desired.
5. Press UP (▲) or DOWN (▼) to
advance to the next menu.
11
Feature Set-up
Setting the Area Code
1. Press CALL to enter the Area Code
selection mode. The left most digit in
the code sequence will flash. Use the
numeric keys on the key pad to enter
the desired area code.
2. Press CALL to confirm.
3. Press UP (▲) or DOWN (▼) to
advance to the next menu.
Setting Auto Talk
Default: ON
With the auto talk feature ON the telephone
will automatically connect to a call when
lifted from the cradle. With the Auto Talk
feature OFF, you must press the TALK button
to connect to an incoming call regardless of
the location of the handset.
1. Press CALL to enter the auto talk
selection mode.
3. Press CALL to confirm the selection.
4. Press the UP (▲) or DOWN (▼)
to go to the next menu.
If the CID mode is set to off, the LCD will
display time and date and the display will
read “CID IS OFF”.
Setting Time and Date
Default Time/Date “12:00 AM 01/01”
The time-and-date stamp is automatically
updated when the first incoming Caller ID
call is received.
If the time setting is lost during a power
outage, the clock will flash when power
received again.
1. Press UP until the display reads,
“TIME/DATE”.
3. Press call to confirm the selection.
2. Press CALL to start changing the date.
The display shows the current time and
date on the top line, e.g. “12:05AM
12/20” with the month digits flashing.
4. Press the UP (▲) or DOWN (▼)
to go to the next menu.
3. Press UP (▲) or DOWN (▼) to change
the month digits.
2. Press the UP (▲) or DOWN (▼)
to change the mode.
Setting Caller ID On/Off
Default: ON
1. Press CALL to enter the auto talk
selection mode.
12
2. Press the UP (▲) or DOWN (▼)
to change the mode.
4. Press CALL once to select. After the month
digits are set, the date digits flash.
5. Press UP (▲) or DOWN (▼) to change
the date digits.
6. Press CALL once to select. After the date
digits are set, the hour digits flash.
Feature Set-up
7. Press UP (▲) or DOWN (▼) to change
the hour digits.
8. Press CALL once to select. After the hour
digits are set, the minute digits flash.
9. Press UP (▲) or DOWN (▼) to change
the minute digits.
10. Press CALL once to select. After the
minute digits are set, AM/PM will flash.
11. Press UP (▲) or DOWN (▼) to for either
AM or PM.
12. Press CALL once to select. After AM or
PM is selected, the time/date digits
will be blank.
13. Press CALL once to display the time/date
again or press UP (▲) or DOWN (▼) to
go to the next menu.
Setting Contrast
Default: Level 2
1. Press CALL once to enter the Contrast
Level selection mode. The current
selected level flashes.
2. Press UP (▲) or DOWN (▼) to
change the level.
3. Press CALL to select level desired.
4. Press UP (▲) or DOWN (▼) to
advance to the next menu.
Clarity Power Technology
With the Clarity Power feature, the high frequency sounds are amplified more than the
low frequency sounds so words are not just
louder, but clearer and easier to understand.
BOOST Clarity Power On/Off
The C420 has a BOOST CLARITY POWER
button that controls the loudness 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 dB of volume before the
CLARITY POWER button is activated. Once
the CLARITY POWER button is pressed, the
Clarity 420 will provide up to 30 dB of gain.
Handset Ringer
Set the switch marked Ringer On/Off located
on the side of the handset. The ringer switch
must be set to ON for the handset to ring.
13
Feature Set-up
NOTE: If both handset and base ringer’s are
set to OFF, the visual ringer will flash to indicate there is an incoming call.
TELEPHONE BASE
BOOST ON/OFF Switch
This switch will disable the reset feature of the
BOOST Clarity Power button as follows:
Ringer Style
The style of ring or cadence can also be
adjusted by pressing the RING STYLE button.
Six (6) styles are available allowing you to
customize your ring. The ringer will sound
for 2 seconds while choosing a ringer style,
to allow the user to make a choice.
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 (Clarity Power)
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.
Pulse/Tone
Slide the switch to the type of telephone service you have; tone for touch-tone service or
pulse for rotary dialing.
Ringer Volume
Adjust the volume of ring by pressing the
VOLUME UP or DOWN switch until the
desired ring volume is achieved. There are
six (6) levels of volume available.
14
RING
ER O
FF O
VOLU
ME
RING
STYLE
Diagram D: Telephone Base
NOTE: If both handset and base ringer’s are
set to OFF, the visual ringer will flash to indicate there is an incoming call.
Placing a Call
1. Press the TALK button (TALK button
will illuminate GREEN) and dial the
number you wish to call.
2. To end the call press the TALK button
or place the handset in the base.
Answering a Call
1. Remove handset from base. You will
automatically be connected.
OR
2. Press the TALK button.
Feature Set-up
Refer to BOOST Clarity Power and Volume
Control for information on adjusting volume
controls (Page 14).
in the handset is disabled. Pressing the
MUTE button again will disengage the
MUTE feature.
Temporary Tone
Redial/Pause
If you have rotary (pulse) dial service, you
can change from pulse to touch tone (tone)
during a call.
The RD/P button operates both the last
number redial and the pause feature.
1. Make phone call and wait until it
is connected.
2. Press the * key. Keys pressed after
this are sent as tone signals.
3. The phone will automatically reset
to rotary (pulse) service after the
call ends.
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.
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.
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
Last Number Redial:
The last number dialed (up to 32 digits)
is stored in the redial memory until
another number is dialed.
To use this feature:
1. Press the TALK button.
2. When you hear the dial tone,
press the RD/P button.
3. The phone will automatically
dial for you.
Pause Feature:
Programming in a pause will cause the
phone to wait four (4) seconds before
dialing additional numbers. This feature
may be used when it is necessary to dial
an access code (9, for example) and
wait for a second dial tone before you
can dial an outside number. Press the
RD/P button at the required point during
the memory storage process to program
a pause.
LCD Display Screen
The LCD located on the front of the phone will
display the number you are dialing and with
Caller ID service displays information about
15
Telephone Operations
the call before you answer. The display also
functions as call timer when the handset is off
hook or on a call.
Lighted Key Pad
The key pad will light for fifteen (15) seconds
after removing the handset from the base. To
reactivate the feature while in standby, press
the TALK or the MEM button. To activate
while the phone is in use, press any key.
Base Lights
POWER ON – Base power is on.
IN USE/ CHARGING ON – When handset is
in the base charging, the LED will shine RED
when the handset is on a call the LED will
shine GREEN.
Page/Handset Locator
To send a page signal from the base to the
handset, press the PAGE button located on
the base of the telephone. A series of rings
will sound from the handset.
To locate the handset if it is away from the
base, press and hold the PAGE button for
approximately five (5) seconds. A series
of rings will sound. Return the handset to
the base or press the TALK button to cancel
the page.
16
Channel Operation
The Clarity 420 cordless telephone automatically searches and selects the clearest
of 40 channels when it is being used. If interference develops on the line, pressing this
button will move to another channel.
Security Code
The security code prevents your cordless
phone conversations from being accessed
by a phone on a different line. Once the
handset battery is fully charged, the handset
will automatically select the code from
over 65,000 different combinations. The
code is changed every time the handset is
placed in the cradle.
If you have trouble with placing or receiving calls, a lost security code may be the
cause of the problem. When this occurs, the
handset can no longer communicate with the
base. Reset by placing the handset on the
base for 5-10 seconds. If that does not work,
unplug the AC adapter from the wall outlet.
Disconnect the handset battery for
5-10 seconds, and then reconnect. Place
hand-set back on the base and then reinsert
the AC adapter.
Memory Storage
Memory Storage Locations
The C420 has ten (10) indirect or two touch
memory locations on the telephone (0-9) that
can be programmed to dial frequently called
numbers of up to 16 digits.
One (1) Emergency Storage button is located
on the handset. These storage buttons can be
programmed with numbers of up to 16 digits.
Storing Numbers into Memory:
1. Press the MEM button.
2. Dial the number you wish to store.
3. Press the MEM button again.
4. Press either the emergency button or
the number on the key pad that you
wish to store the number to.
5. A long beep will indicate the
programming process is complete.
Dialing from Memory:
1. Press the TALK button.
2. Press the MEM button.
3. Press the number on the key pad
where the desired number has
been stored.
To Dial From Emergency Storage Location:
1. Press the TALK button.
2. Press the desired emergency button.
3. The call will automatically dial.
Editing Numbers Stored in Memory:
Replace a stored number by programming
a new number in its place.
Deleting Numbers from Memory:
1. Press and hold the MEM button
for (3) three seconds .
2. Enter the location number (0-9) or
press the emergency button and
review the number.
3. Press the DEL button to erase the
memory. ERASE MEMO and the
location number will be displayed.
4. Press DEL again to confirm.
5. A long beep will indicate the
process is complete.
NOTE: During the memory storage process
the TALK button will flash GREEN.
4. The call will automatically dial.
17
Caller ID Storage
IMPORTANT: You must subscribe to Caller ID
Service from your local telephone
company to utilize this feature.
This telephone will automatically display
an incoming caller’s name and telephone
along with the date and time of the call. It
will record up to fifty (50) calls and store the
data into memory.
Stand By
In the stand by mode the LCD will display
the following information:
• Date/Time
• Battery Status
• Number of received
Example: CALLS ALL =20
• Number of new received calls.
Example: 10 New
• Repeat Icon: RPT indicates CID calls
that are repeated.
Viewing Call List
CL
AR
When an incoming call is received, the
screen will display, the name, number, date
and time of call if available.
ITY
C4
20
Blocked Number
Diagram E: Caller ID Screen
NUM BLOCKED will appear if the name and/
or number of the caller are blocked.
Functions:
Unknown Number
CALL: Pressing this button will dial the number displayed and functions as select and
save in the set up menu.
NO NUMBER will appear if the name
and/or number of the incoming call are
not available.
SCROLL UP/DOWN: (▲) (▼) Allows for a
scrolling review either up or down through
the CID list and set up menu.
If the telephone number on the Caller ID
display is longer than 12 digits the display
will toggle between the first half of the
number and the second half automatically.
DELETE: Pressing delete will remove the
entry displayed.
The LED in the handset antenna will
illuminate RED to indicate a new call has
been received.
18
Caller ID Operations
The REPEAT call icon will light if the C420
receives more than one call from the
same number.
There will be message to indicate end
of CID list.
Placing a call from Caller ID List
1. From stand by use the UP/ DOWN
arrows to scroll through Call List
2. Select the desired number by pressing
CALL. Selected number will flash. Use the
Up and Down Scroll to view available
dialing options (7 digits, 10 digits or
11 digits).
3. Press CALL to select the desired call
format (see below). The number will
stop flashing.
4. Press CALL to dial.
When you place calls using Caller ID information, you have three (3) dialing options to
select from:
1. 7 digit number (123-4567)
2. 7 digit number plus area code
(890-123-4567)
3. 1 plus area code plus 7 digit number
(1-890-123-4567)
Deleting Calls from Call list
1. While reviewing the Caller ID, press
DEL to delete the displayed caller infor
mation. The display flashes “ERASE?”
2. Press DEL to select. The display briefly
reads, “CID ERASED.” The next Caller ID
entry appears automatically or the dis
play reads, “– NO CALLS –” if the list
is empty.
Phone numbers cannot be deleted while it
is in the flashing mode.
Deleting All Caller ID Information
1. While reviewing the Caller ID, hold
down DEL for three (3) seconds. The
display flashes “ERASE ALL?”
2. Press DEL to select. The display briefly
reads “ALL CID” and “ERASED” and
then “— NO CALLS —”.
At any time, you can press FLASH one
time to return to standby mode. Or it will
return to standby automatically when 30
seconds has elapsed without any keys
being pressed.
Call Waiting
When you are on an existing call, you
will hear a beep. The LCD will display the
incoming calls caller ID information. To
answer the waiting call, press FLASH. The
original call will be placed on hold and you
will be connected with the waiting call. To
return to the original call, press FLASH.
If you do not access the waiting call, the
caller ID information is transferred into the
call list as a viewed call.
19
Care
The C420 has been designed to give you
years of dependable service with a minimum
of care.
To ensure the utmost in performance, follow
these guidelines in caring for the unit:
1. Avoid dropping or knocking the unit.
unit with a soft damp cloth. Do not use
detergents and avoid excess moisture.
3. The C420 is an electrical device.
Avoid electric shock by keeping the
phone away from water (i.e. bath
room, kitchen sink, etc.)
2. Dust the unit regularly. Wipe the
Troubleshooting
The unit will not operate/no dial tone:
• Verify the TALK Button is lit.
• Verify the AC Adapter is securely
plugged into the base and the
telephone.
• Verify the telephone line cord is
securely plugged into the wall jack
and the telephone.
• Make sure the base antenna is in an
upright position.
• Make sure the handset battery is
fully charged.
• Verify the telephone is in the correct
dialing mode, tone (touch) or
pulse (rotary).
• Make sure you are in the usable
range of the base station.
• Reset the security code by placing the
handset in the base for 5-10 seconds.
20
The phone does not ring when you
receive a call:
• Make sure the RINGER switch on the
handset and base are set to ON.
• Verify the AC Adapter is securely
plugged into the base and the
telephone.
• Verify the telephone line cord is
securely plugged into the wall jack
and the telephone.
• Make sure you are in the usable
range of the base station.
• You may have too many extensions
on your line. Try unplugging a
few devices.
Troubleshooting
Noise, Static, Interference or Other Calls
Heard while Using the Handset:
• Try changing channels.
• Move closer to the base and
try again.
• Make sure the base antenna is in an
upright position.
• If moving closer does not work, you
may have lost the security code.
• Make sure you are in the usable
range of the base station.
• Reset code by placing the handset
back on the base for 5-10 seconds.
(See Security Code Section)
• Make sure the handset battery is
fully charged.
• Try relocating the base unit to
another location.
• Make sure the AC Adapter is not
plugged into the wall outlet with
other appliances.
• Try relocating the base unit to
another location.
Phone Will Not Hold Charge:
Difficulty in Placing or Receiving Calls:
• Make sure you have selected the
correct dialing mode, tone or pulse.
• Make sure the AC Adapter is not
plugged into a wall outlet with other
appliances. Disconnect for 5-10
seconds then reconnect. Place the
handset back on the base and
reinsert the AC Adapter.
• Make sure the handset battery is
fully charged.
• Make sure the charging contacts on
the handset and base are free of dust
and dirt. Clean the contacts with a
soft cloth.
• Make sure CHARGE LED on the base
is lit when handset is in the cradle.
• If necessary, replace the handset
battery. (See Handset Battery Charging)
21
Regulatory Compliance
Part 68 of FCC Rules Information
a) This equipment complies with Part 68 of
the FCC rules and the requirements adopted
by the ACTA. On the bottom of this equipment is a label that contains, among other
information, a product identifier in the
format US:AAAEQ##TXXXX. If requested,
this number must be provided to the telephone company.
b) A plug and jack used to connect this
equipment to the premises wiring and telephone network must comply with the applicable FCC Part 68 rules and requirements
adopted by the ACTA. A compliant telephone
cord and modular plug, RJ11C USOC, is provided with this product. It is designed to be
connected to a compatible modular jack that
is also compliant. See installation instructions
for details.
c) The REN is used to determine the number
of devices that may be connected to a telephone line. Excessive RENs on a telephone
line may result in the devices not ringing in
response to an incoming call. In most but
not all areas, the sum of RENs should not
exceed five (5.0). To be certain of the number
of devices that may be connected to a line,
as determined by the total RENs, contact
the local telephone company. For products
approved after July 23, 2001, the REN for
this product is part of the product identifier
that has the format US:AAAEQ##TXXXX.
22
The digits represented by ## are the REN
without a decimal point (e.g., 03 is a REN of
0.3). For earlier products, the REN is separately shown on the label.
d) If this telephone equipment causes harm to
the telephone network, the telephone company will notify you in advance that temporary
discontinuance of service may be required.
But if advance notice isn’t practical, the telephone company will notify the customer as
soon as possible. Also, you will be advised of
your right to file a complaint with the FCC if
you believe it is necessary.
e) The telephone company may make changes in its facilities, equipment, operations or
procedures that could affect the operation of
the equipment. If this happens the telephone
company will provide advance notice in
order for you to make necessary modifications to maintain uninterrupted service.
f) If trouble is experienced with this telephone
equipment, for repair or warranty information, please contact Clarity, 1-800-552-3368.
If the equipment is causing harm to the telephone network, the telephone company may
request that you disconnect the equipment
until the problem is resolved.
g) This telephone equipment is not intended
to be repaired and it contains no repairable
parts. Opening the equipment or any attempt
to perform repairs will void the warranty. For
service or repairs, call 1-800-552-3368.
Regulatory Compliance
h) Connection to party line service is subject
to state tariffs. Contact the state public utility
commission, public service commission or corporation commission for information.
i) If your home has specially wired alarm
equipment connected to the telephone line,
ensure the installation of this telephone equipment does not disable your alarm equipment.
If you have questions about what will disable
alarm equipment, consult your telephone company or a qualified installer.
j) This telephone equipment is hearing aid
compatible.
Customer-Owned Coin/Credit Card Phones:
To comply with state tariffs, the telephone
company must be given notification prior to
connection. In some states, the state public
utility commission, public service commission
or corporation commission must give prior
approval of connection.
Part 15 of FCC Rules Information
This device complies with Part 15 of the
FCC Rules. Operation is subject to the following two conditions: (1) This device may
not cause harmful interference, and (2) this
device must accept any interference received,
including interference that may cause undesired operation.
Your equipment has been tested and found
to comply with the limits of a Class B digital
device, pursuant to Part 15 of FCC rules.
These limits are designed to provide reasonable protection against harmful interference
in residential installation.
This equipment generates, uses and can
radiate radio frequency energy and, if not
installed and used in accordance with the
instructions, may cause harmful interference
to radio communications. However, there is
no guarantee that interference will not occur
in a particular installation; if this equipment
does cause harmful interference to radio
or television reception, which can be
determined by turning the equipment off
and on, you are encouraged to try to
correct the interference by one of the
following measures:
1. Where it can be done safely, reorient
the receiving television or radio antenna.
2. To the extent possible, relocate the television, radio or other receiver with respect to
the telephone equipment. (This increases
the separation between the telephone equipment and the receiver.)
3. Connect the telephone equipment into
an outlet on a circuit different from that to
which the television, radio, or other receiver
is connected.
4. Consult the dealer or an experienced
Radio/TV Technician for help.
CAUTION: Changes or modifications not
expressly approved by the manufacturer
responsible for compliance could void the
user’s authority to operate the equipment.
23
Regulatory Compliance
Industry Canada Technical Specifications
This product meets the applicable Industry
Canada technical specifications.
Before installing this equipment, users should
ensure that it is permissible to be connected
to the facilities of the local telecommunications company. The equipment must also be
installed using an acceptable method of
connection. In some cases, the company’s
inside wiring associated with a single line
individual service may be extended by
means of a certified connector assembly
(telephone extension cord). The customer
should be aware that compliance with the
above conditions may not prevent degradation of service in some situations. Repairs to
certified equipment should be made by an
authorized Canadian maintenance facility
designated by the supplier.
Any repairs or alterations made by the user
to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect
the equipment.
Users should ensure for their own protection
that the electrical ground connections of the
power utility, telephone lines and internal
metallic water pipe system, if present, are
connected together. This precaution may be
particularly important in rural areas.
24
CAUTION: Users should not attempt to make
such connections themselves, but should
contact the appropriate electrical inspection
authority, or electrician, as appropriate.
The Ringer Equivalence Number is an indication of the maximum number of terminals
allowed to be connected to a telephone
interface. The termination on an interface
may consist of any combination of devices
subject only to the requirement that the sum
of the Ringer Equivalence Numbers of all the
devices does not exceed five.
(The term “IC:” before the certification/registration number only signifies that the Industry
Canada technical specifications were met.)
The party responsible for regulatory
compliance:
Clarity, A Division of Plantronics, Inc.
4289 Bonny Oaks Drive, Suite 106
Chattanooga, TN 37406
Phone: 1-800-552-3368
The following warranty and service information applies only to products purchased and
used in the U.S. and Canada. For warranty
information in other countries, please contact
your local retailer or distributor.
Warranty and Service
Limited Warranty
Implied Warranties
Clarity, a division of Plantronics, Inc.
(“Clarity”) warrants to the original consumer
purchaser that, except for limitations and
exclusions set forth below, this product shall
be free from defects in materials and workmanship for a period of one (1) year from
the date of original purchase (“Warranty
Period”). The obligation of Clarity under this
warranty shall be at Clarity‘s option, without
charge, of any part or unit that proves to be
defective in material or workmanship during
the Warranty Period.
Under state law, you may be entitled to the
benefit of certain implied warranties. These
implied warranties will continue in force only
during the warranty period. Some states do
allow limitations on how long an implied
warranty lasts, so the above limitation may
not apply to you.
Exclusions from Warranty
This warranty applies only to defects in
factory materials and factory workmanship.
Any condition caused by accident, abuse,
misuse or improper operation, violation of
instructions furnished by Clarity, destruction
or alteration, improper electrical voltages or
currents, or repair or maintenance attempted
by anyone other than Clarity or an authorized service center, is not a defect covered
by this warranty. Telephone companies
manufacture different types of equipment
and Clarity does not warrant that its equipment is compatible with the equipment of a
particular phone company.
Incidental or Consequential Damages
Neither Clarity nor your retail dealer or
selling distributors has any responsibility for
any incidental or consequential damages
including without limitation, commercial loss
or profit, or for any incidental expenses,
expenses, loss of time, or inconvenience.
Some states do not allow exclusion or limitation of incidental or consequential damage,
so the above limitation or exclusion may not
apply to you.
Other Legal Rights
This warranty gives you specific legal rights
and you may also have other rights which
vary from state to state.
25
Warranty and Service
How to Obtain Warranty Service
To obtain warranty service, please prepay
shipment and return the unit to the appropriate facility listed below.
In the United States
Clarity Service Center
4289 Bonny Oaks Drive, Suite 106
Chattanooga, Tennessee 37406
Tel:
(423) 622-7793
or (800) 426-3738
Fax: (423) 622-7646
or (800) 325-8871
In Canada
Plantronics Service Center
8112 Trans Canada Highway
Ville St-Laurent, Quebec H4S 1M5
Canada
Tel:
(800) 540-8363
(514) 956-8363
Fax: (514) 956-1825
26
Please use the original container, or pack the
unit(s) in a sturdy carton with sufficient packing material to prevent damage.
Include the following information:
1. A proof-of-purchase indicating model
number and date of purchase.
2. Bill-to address.
3. Ship-to address.
4. Number and description of units shipped.
5. Name and telephone number of person
to call, should contact be necessary.
6. Reason for return and description of
the problem.
Damage occurring during shipment is
deemed the responsibility of the carrier,
and claims should be made directly with
the carrier.

---

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