FRITZ!Box C4 FRITZ!Fon DECT Cordless Telephone

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For use with Fritz!box routers with DECT capability.

As the latest addition to the FRITZ!Fon range, the FRITZ!Fon C4 offers a whole range of exciting features, with telephone calls in HD quality, numerous multimedia applications and Internet services, and music and Smart Home management making everyday use an enjoyable experience and delivering unbeatable entertainment.

  • Cordless telephone (DECT) for Internet and landline telephony
  • Perfect addition to all FRITZ!Box models with a DECT base station
  • Supports HD telephony for natural sound
  • Full-duplex hands-free function, speakerphone in HD quality
  • Secured with ex works voice encryption

HD telephony for flawless sound quality
Crystal-clear phone conversations – the FRITZ!Fon C4 supports high-definition telephony for outstanding sound quality. With such natural acoustics, even long telephone calls are extremely enjoyable.
Touch base
For unlimited use of the many features offered by the FRITZ!Fon C4 and the ability to add new ones, we recommend combining it with a FRITZ!Box featuring a DECT base station – a dream team in the world of telephony.

Stunning design
The ergonomic, illuminated keypad with message button and the high-resolution color display make the FRITZ!Fon child’s play to use. Weighing just 115 g, this slimline, lightweight device is easy to hold in your hand.
Versatile and easy to use
We set great store by user-friendliness and make your life as easy as possible. The FRITZ!Fon C4 has been specially designed so that you can benefit from the full range of features – whether telephony, multimedia applications, or Internet services.

Ready to use in the blink of an eye
The FRITZ!Fon C4 is ready to use in a few short steps: simply register it with the DECT base station and start making calls. You can conveniently store phone numbers and contacts either using the FRITZ!Box menu or on the FRITZ!Fon itself.
Secure calls
To make sure confidential conversations stay that way, the FRITZ!Fon C4 protects your calls with ex works voice encryption in line with the latest standards. This gives you extra security right from the start – without the need for any additional configuration.

  • Cordless telephone (DECT GAP) – perfect with the FRITZ!Box
  • Supports HD telephony for natural sound
  • Secure ex works through encryption of call data compliant with the latest standards
  • Reception of RSS feeds, web radio and podcasts
  • Incoming e-mail can be read and answered
  • Control of UPnP media servers and Smart Home devices
  • Call lists, alarm, baby monitor, do not disturb
  • DECT Eco: radio network switched off automatically on standby
  • Update with new functions at the press of a button

Cordless telephone (DECT-GAP standard) for Internet and fixed line telephony
Internet telephony SIP-compliant in accordance with RFC 3261 (in combination with the FRITZ!Box)
Ideal supplement for all FRITZ!Box models with a DECT base station
Convenient configuration and operation of FRITZ!Box functions on the handset: Answering machine, alarm, call diversion, baby monitor, WiFi switch and much more
Update with new functions at the press of a button
Supports HD telephony (7-kHz G.722 codec) for natural sound
Full duplex hands-free communication
Open listening in HD quality
Voice transmission encrypted upon delivery for greater security
Ergonomic, illuminated keypad with message button (MWI)
DECT Eco: radio network switched off automatically on standby
Range up to 300 meters outdoors and up to 40 meters indoors
Battery talk time up to 10 hours, up to 6 days on standby
Multiple telephone books with up to 300 entries, online contacts, convenient searching, contact photos
Multiple answering machines with graphic menus, remote inquiry and e-mail forwarding
Call waiting, call diversion, hold, routing, transfer and three-party conferences
Configuration for quick-dial numbers, call list and call blocks, internal calling, CLIR and suppression of outgoing number on a call-by-call basis
Reception of RSS feeds, web radio and podcasts
Incoming e-mail can be read and answered
Control of UPnP media servers and Smart Home devices
Charging station: charge time about 6 hours
Deep discharge protection
Loudspeaker/microphone
Conforms to CE standards

Device properties

Intuitive menus on high-quality color display (180 ppi)
Color display: 240 x 320 pixels, 262,000 colors, high-resolution
Make calls and hear audio via headset
Connection for stereo headset, 3.5-mm jack; compatible with devices like Blackberry
Audio output via headset and headphones, mono
1 Li-Ion battery, 750 mAh, 3.7 V
Dimensions (W x H x D): approx. 48 x 145 x 18 mm
Weight: approx. 115 g
Supply voltage of the charging station: 230 V / 50 Hz

Package contents

FRITZ!Fon C4
Battery pack
Charging station
Power supply (230 V)
Quick guide