AVM FritzBoxFon



Currently (June '05) the only affordable ATA that also provides an ISDN BRI interface.
Has Linux inside. :-) Modified firmware versions ("mods") are available that add telnet access, pop-up notification for a PC etc.
Permits "call-through" with PIN authentication; newer firmware can configure up to 10 Call-By-Call providers to be used in the LCR (least-cost-router) setup; the non-ATA versions of the Fritz!Box can be modified to act like an ATA, i.e. the built-in DSL modem can be deactivated.

From the AVM Site:

FRITZ!Box Fon is a powerful voice-over-IP PBX system for telephony and web surfing over ADSL. Use your existing telephones to make calls, whether over the Internet or over the phone line. Moreover, FRITZ!Box Fon puts your PCs on line--as an ADSL modem, or as a router. And its built-in firewall adds security to your surfing pleasure.

News: Asterisk runs on AVM Fritz!Box - HowTo for 7170 (May 2006)


Protocol: SIP

  • 1 ADSL
  • 1 FXO or ISDN BRI
  • 1 LAN
  • 1 USB
  • 2 FXS

Product Page


Contact Information

Web Site: http://www.avm.de/en/

There are several versions of this unit:
Fritz!Box SL - only DSL modem, 1 LAN, 1 USB port, no VoIP (manual-DE.pdf).
Fritz!Box SL ATA - unknown.
Fritz!Box Fon - as described above.
Fritz!Box Fon ata - as per the Fon, but without the ADSL and the addition of another Ethernet jack.
Fritz!Box Fon 5050 - special feature: two ISDN BRI ports, one for TE and one for NT mode.
Fritz!Box Fon WLAN - with the addition of a WLAN.
Fritz!Box Fon WLAN 7050 - like 5050 but with WLAN.
Fritz!Box Fon WLAN 7140 - with added USB host (share a usb device on the network...) and 4 ethernet ports.
Fritz!Box Fon WLAN 7270 with added DECT and CAT-iq

Also note that each of these models actually come in an Annex A and an Annex B model for the ADSL port:
Annex A: A frequency range is used, which fits normal similar voice grade channels.
Annex B: A frequency range is used, which fits "ISDN" voice grade channels (reserves more frequencies for the 2 lines)

AVM pretends that the Fritz!Box Fon ata is ISDN and analog compatible, but is obviously only ISDN compatible. See comments below for details.

Be also warned that international support is available only in german, dutch or english, and you might need to wait several days before getting an answer by email (normally they answer within one day though).

Also be aware of german-only versions of the Fritz!Box models. If you look for Fritz!Box'es on Ebay there are several available from germans - and they are cheaper than most other places. But these are with german firmware, and with a Annex B modem built in. It is possible however to convert (mod) the german boxes to Annex A and to add English firmware. This is possible simply by firmware modification, but by doing so you void the support from AVM. A fair amount of eg. Danish people have reported about successful conversions in the danish forums Voip-User and on Musimi.
For a guide to convert a german targeted box see this forum: IP Phone Forum

A good information site on the Fritz!Box:


See also:

This no longer works http://eliti.st/projects/hacking_actiontec.html

Available in:

Belgium: Tornado Network Services
Belgium: VoIPandGo.be Cheap Prices! Great Service! Quick delivery for complete Europe by UPS.
Denmark: eStation.dk - Danish Distributer
Germany: Various places - the ATA version apparently only via VoIP providers and/or ebay
Italy: Allnet.Italia srl Only for resellers
Italy: extreme-networking.com
Norway: TeleVoIP
UK & Worldwide VoIPon - Best Prices and Support on AVM FritzBox Fon 5113 - Call for reseller pricing or International Shipping. VoIPon.
Shipping Worldwide Hardware-Oasis

Hardware details

Based on the AR7 processor family from Texas Instruments

> uname -a
Linux (none) 2.4.17_mvl21-malta-mips_fp_le #330M-4 Die Okt 5 14:16:26 CEST 2004 mips unknown

> cat proc/cpuinfo
processor : 0
cpu model : MIPS 4KEc V4.8
BogoMIPS : 149.91
wait instruction : yes
microsecond timers : yes
extra interrupt vector : yes
hardware watchpoint : yes
VCED exceptions : not available
VCEI exceptions : not available

Speaks SIP and uses PCMA, PCMU, G726-32, G726-40, G726-24 as codecs

Created by: ckruetze, Last modification: Wed 20 of Jan, 2010 (01:59 UTC) by napetsy
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