When working with the FRITZ!Fon, follow the instructions below to
protect yourself and the device from damage.
•Never let liquids get inside the FRITZ!Fon. Otherwise, electric
shocks or short circuits may result.
•Protect the FRITZ!Fon from direct sunlight.
Note for Hearing Aid Users
If you wear a hearing aid, FRITZ!Fon can cause unpleasant noises.
These are caused by radio signals coupled into the hearing aid.
Prerequisites for Operating FRITZ!Fon
•You need a DECT base station that is connected with a tele-
phone line or the Internet.
•If you would like to use all of the functions offered by the
FRITZ!Fon, you need a FRITZ!Box that supports DECT as your
base station. The latest firmware must be installed on both
devices.
FRITZ!Fon C46
FRITZ!Fon C4 at a Glance
1FRITZ!Fon C4 at a Glance
FRITZ!Fon C4 is a cordless telephone with which you can make telephone calls on the Internet and the fixed-line network. FRITZ!Fon was
developed especially for the FRITZ!Box, but can be used with other
DECT base stations.
Telephone calls over the Internet can be conducted with FRITZ!Fon in
HD to enjoy natural sound quality.
FRITZ!Fon supports DECT Eco “No Emission”. If all of the cordless telephones registered with one FRITZ!Box support DECT Eco, the
FRITZ!Box can switch off DECT transmission whenever the telephones
are on standby.
Volu me
Call list
Telephone book
internal calls
Navigate
Hands-free
calling key
Call key
accepting calls
making calls
redialing
Notification key, flashes for
new calls
new messages on
the answering machine
new e-mails, podcasts, RSS
new software updates
Menu key
OK key
Port for headset
and headphone
0 key
rotate display to read e-mails, RSS messages
open Internet services (press and hold)
for text entry: spaces, special characters
* key
Do Not Disturb (press and hold)
for text entry: special characters
# key
key lock (press and hold)
for text entry: special characters,
capital letters (press and hold)
1.2Getting to Know the FRITZ!Fon
FRITZ!Fon C48
Icons on the Display
1.3Icons on the Display
Symbol MeaningSymbol Meaning
Establishing connection Call in HD
Connection established“DECT Eco” function en-
abled in the FRITZ!Box
Connection clearedDeletes the last entry
Incoming callMissed calls, new messag-
es or firmware update available
Answering machine enabled
Call diversion activeLoudspeaker/Handset mut-
Alarm activeHeadset connected
Three-party conference callQuality of connection with
Keypad lockedBattery state of charge
Microphone off
ed
base station
Do Not Disturb enabled
FRITZ!Fon C49
Starting Operation of the FRITZ!Fon
2Starting Operation of the FRITZ!Fon
2.1Inserting the Battery
1.Place a coin in the slot at the bottom of FRITZ!Fon. Rotate the
coin until the battery cap pops open and take off the battery
cap.
2.Insert the battery. The conductors of the battery must be in
contact with the conductors in the housing.
3.Close the battery compartment.
FRITZ!Fon C410
Charging the Battery
2.2Charging the Battery
1.Connect the power supply unit to the charging station.
2.Plug the other end into a power outlet.
3.Place the FRITZ!Fon in the charging station.
The battery will be charged.
2.3Registering FRITZ!Fon with the Base Station
Register your FRITZ!Fon with your FRITZ!Box or another DECT base station.
Registering with the Base Station
1.To switch on FRITZ!Fon, press and hold down the hang up but-
ton .
The display shows “Press and hold down DECT button on the
base station!”.
FRITZ!Fon C411
Registering FRITZ!Fon with the Base Station
2.Press the “DECT” or “Registration” button on your base sta-
tion. Press and hold the button until FRITZ!Fon requests a PIN
or is successfully registered.
3.If the PIN of the base station is requested, enter the PIN and
press “OK”.
In all FRITZ!Box models the PIN is preset to “0000”.
FRITZ!Fon registering with the base station.
Registering at Multiple Base Stations
You can register FRITZ!Fon at up to four base stations, and change the
active base station quickly as needed.
Here is how to register FRITZ!Fon with the second, third or fourth base
station:
1.Press the menu key .
2.Select “Settings / OK / Registration / OK / Register / OK”.
3.Press the “DECT” or “Registration” button on your base sta-
tion. Press and hold the button until FRITZ!Fon requests a PIN
or is successfully registered.
If the PIN of the base station is requested, enter the PIN and
press “OK”.
In your FRITZ!Box, the PIN is preset to “0000”.
FRITZ!Fon is now registered.
FRITZ!Fon C412
Registering FRITZ!Fon with the Base Station
Switching Base Stations
If FRITZ!Fon is registered at multiple base stations, you can switch
base stations as follows:
1.Press the menu key .
2.Select “Settings / OK / Registration / OK / Register / OK”.
3.Select a base station and press “OK”.
FRITZ!Fon connects to the base station.
Deregistering from a Base Station
If you no longer use one of the base stations, deregister FRITZ!Fon
from that base station.
1.Press the menu key .
2.Select “Settings / OK / Registration / OK / Deregister / OK”.
3.Select a base station and press “OK”.
FRITZ!Fon is deregistered from the base station.
FRITZ!Fon C413
Navigating in the Menus
2.4Navigating in the Menus
The functions of FRITZ!Fon are operated using a menu, which has a
main menu and several submenus.
With the control ring and the left display key you can navigate
up, down and back through the menus.
Select functions using the “OK” button or the right display key .
Back
Back
Down
FRITZ!Fon C414
Select / OK
Up
Select / OK
Making Telephone Calls
Call list
Hang up key
Call key /
Redialing
Telephone book
Internal calls
Hands-free calling
3Making Telephone Calls
3.1Function Keys for Making Telephone Calls
3.2Dialing Numbers
1.Enter a telephone number.
2.Press the call key .
3.3Accepting a Call
To pick up a call, press one of the following buttons:
•call key
•display key “Pick Up”
•hands-free calling key
FRITZ!Fon C415
Enabling Direct Pickup
3.4Enabling Direct Pickup
If the “Direct pickup” function is enabled, FRITZ!Fon accepts a call immediately as soon as you take FRITZ!Fon out of the charging station.
1.Press the menu key .
2.Select “Settings / OK / Telephony / OK / Pick up directly”.
3.Press the display key “On”.
Direct pickup is enabled.
3.5Adjusting the Volume
The volume of a call can be adjusted during calls with the handset
and hands-free calls.
Press the top of the control ring to turn up the volume.
Press the bottom of the control ring to turn down the volume.
3.6Disabling Do Not Disturb
You can switch off the ring tone. The display of FRITZ!Fon continues to
indicate incoming calls.
Switching Off the Ring Tone
To switch off the ring tone, press the key until the symbol “Do
Not Disturb” appears on the display.
To switch the ring tone back on, press the key until the symbol
“Do Not Disturb” disappears from the display.
FRITZ!Fon C416
Switching on Hands-Free Calling
Switching Off Ringer for a Call
Press the and hold it down until the telephone stops ringing.
You can pick up the call now or wait until the caller hangs up. The
next time a call arrives FRITZ!Fon will ring again.
3.7Switching on Hands-Free Calling
To switch on hands-free calling, press the Hands-Free Calling button
before or during a telephone call.
Press the Hands-free calling key again to return to handset operation.
3.8Muting the Microphone
You can switch off the microphone of the FRITZ!Fon and a connected
headset. Then the other parties will no longer be able to hear you.
To mute the microphone, press the display key “Mute” during a call.
Press the display key “Loud” to switch the microphone back on.
3.9Locking Keys
If you lock the keys of your FRITZ!Fon, you can only call emergency
numbers.
You can still pick up incoming calls. When the keylock is enabled, you
must press and hold down the hang up button to end a call.
To lock the keys, press the until “Keypad locked” appears on the
display.
FRITZ!Fon C417
Paging a Mislaid FRITZ!Fon
To unlock the keys, press the until “Keypad unlocked” appears
on the display.
Enabling Active Keylock
The active keylock is a setting in the “Settings / Telephony” menu.
This setting determines whether the keys remain locked when you
pick up a call while the keylock is enabled.
If you disable active keylock (preset), you can use FRITZ!Fon’s keypad
for the duration of the call. When you enable the active keylock, the
keypad remains locked.
3.10 Paging a Mislaid FRITZ!Fon
If you have mislaid your FRITZ!Fon, you can have it ring:
1.Press the “DECT” or the “Find” button on your base station.
FRITZ!Fon rings.
2.To stop the ringing, press any key on the FRITZ!Fon or the
“DECT” or “Find” button on the base station.
FRITZ!Fon C418
Connecting a Headset
GroundMicrophone
Left
audio signal
Right
audio signal
GroundMicrophoneAudio signal
3.11 Connecting a Headset
Suitable Headsets
The headset must meet the following specifications:
•Headphone impedance: 32 ohms
•Microphone impedance: 800 ohms – 2.2 kOhm
•3.5 mm jack, assignment (stereo / mono):
Connecting a Headset
Connect the headset to the headset socket.
The headset is now ready for operation.
FRITZ!Fon C419
Entering Telephone Numbers
4Entering Telephone Numbers
If you have more than one telephone number, you can assign your
FRITZ!Fon telephone numbers for outgoing and incoming calls.
The telephone number for outgoing calls is the one your FRITZ!Fon
uses when you call someone. The telephone numbers for incoming
calls are the ones at which your FRITZ!Fon can be reached.
Telephone numbers are assigned to your FRITZ!Fon in the DECT base
station.
4.1Assigning Telephone Numbers in the FRITZ!Box
If your FRITZ!Fon is registered to a FRITZ!Box, assign the numbers as
follows:
1.Open the user interface of the FRITZ!Box in a web browser
(http://fritz.box).
2.Select “DECT / Cordless Telephones”.
3.Click the “Edit” button to open the settings of your FRITZ!Fon.
4.Select a telephone number for outgoing calls and one or more
telephone numbers for incoming calls.
For more information on configuring telephone numbers, click
“Help” in the user interface.
5.Click “OK” to save the settings.
FRITZ!Fon C420
Selecting a Telephone Number before a Call
4.2Selecting a Telephone Number before a Call
If FRITZ!Fon is registered with a FRITZ!Box, you can select a telephone
number before you place a call. If you do not select a telephone number, the number you assigned to FRITZ!Fon in the FRITZ!Box will be
used.
Prerequisites
This is how FRITZ!Fon must be set up in the FRITZ!Box user interface:
•For incoming calls the option “React only to the following num-
bers” must be enabled.
•At least one of the numbers enabled for incoming calls cannot
be enabled for outgoing calls.
Selecting a Telephone Number
1.Press the menu key .
2.Select “Settings / OK / Telephony / OK / Number for Outgoing
Calls / OK”.
3.Select a telephone number and then press “OK”.
The telephone number appears on the FRITZ!Fon display and the
FRITZ!Fon uses this number to make the next call.
FRITZ!Fon C421
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