AVM FRITZ!Box Fon - Topcom

NEW! 

■ Internet-telephony PBX 

system with built-in VoIP 

technology 

■ Connects to ADSL, ISDN 

and analog phone lines 

■ Internet telephony without 

a PC, using existing analog 

phones 

■ Intelligent bandwidth 

management for optimum 

voice quality 

■ ADSL modem with firewall 

and port forwarding 

AVM 

FRITZ!Box Fon 

Surf the Web and Make Phone Calls 

Over the Internet With One Device 

FRITZ!Box Fon combines an ADSL modem and a 

PBX system for analog extension phones in one 

device. The ADSL modem with VoIP (Voice over IP) 

technology can be used both for Internet telephony 

and for web surfing, e-mail, and chats—from one 

or more PCs. The PCs can be connected to a LAN 

port or to a USB interface. FRITZ!Box Fon also 

connects to ISDN or an analog telephone line for 

incoming and outgoing phone calls. 

Internet Telephony Without a 

Computer 

FRITZ!Box Fon makes Internet telephony as easy 

as a phone call should be. After registration with 

an Internet telephony provider, the connected 

phones can be used for incoming and outgoing 

calls with all the convenience you are used to. 

Moreover, FRITZ!Box Fon provides the features 

of a conventional PBX system, including Caller ID, 

call forwarding and three-party calls. At the same 

time, you can continue receiving calls at your 

present phone number thanks to FRITZ!Box Fon's 

connection to the telephone line. 

Convenient and Secure ADSL Router 

FRITZ!Box Fon connects one or more computers to 

the ADSL line—simply and securely, through a USB 

or LAN cable. The built-in firewall adds security 

to high-speed surfing. FRITZ!Box Fon works either 

as an ADSL modem, allowing you to surf the 

Web from several computers simultaneously. 

Its built-in firewall capabilities protect all PCs 

against unauthorized access from the Internet, 

and FRITZ!webProtect reliably prevents unwanted 

Internet use. Other network devices can also be 

connected to FRITZ!Box Fon including game 

consoles, access points, network switches, or an 

IP telephone. The Ethernet and USB interfaces 

can be used to connect individual PCs and whole 

networks to the ADSL line. The router supports 

www.avm.de

Technical Details 

Subscriber 

line 

ADSL 

Linked PBX extension phone 

dials over the Internet through 



Existing PBX 

both PPPoE connections in bridge mode, such as 

those initiated by dial-in access software, and 

simple IP routing. And the powerful firewall with 

NAT makes it easy to configure port forwarding. 

Moreover, traffic shaping ensures continuous use 

of the full bandwidth during simultaneous uploads 

and downloads. 

Firewall: 

■ Full-inspection firewall 

■ Network Address Translation (NAT) DSL 

■ IP masquerading 

■ Port forwarding 

■ TÜV-certified security 

Smart Bandwidth Management for 

Quality of Service and Performance 

FRITZ!Box Fon provides optimum quality of service 

and performance through integrated bandwidth 

management. This advanced router function monitors 

incoming and outgoing data traffic over the 

ADSL line and ensures that telephone communication 

over the Internet is not impeded by simultaneous 

web surfing. All uploads and downloads 

are adjusted to the remaining available bandwidth. 

In this way, multiple Internet phone calls 

can be conducted simultaneously without any 

interference. 

■ Traffic shaping: optimized uploads and 

downloads 

■ Priority for VoIP traffic 

■ Limits upload and download bandwidth 

during Internet phone calls 

■ When telephony capacity is exhausted, callers 

receive busy signal 

PBX Linking With Call Through 

FRITZ!Box Fon lets you connect an existing PBX 

system as well, so that its extensions can also be used 

to dial to set up phone calls over the Internet. 

FRITZ!Box Fon can be connected either to an ISDN or 

an analog extension. 

Advantages of PBX Linking 

■ FRITZ!Box Fon adds VoIP capability to the 

existing PBX 

■ No additional equipment or cables needed to 

connect to the other PBX 

■ FRITZ!Box Fon provides Internet telephony to 

more extensions 

■ Internal calls supported between the two systems’ 

extensions 

■ All FRITZ!Box Fon features remain available 

Internet 

telephone 

Bandwidth Management Function 

Telephony without 

bandwidth management 

DSL 

Other ADSL 

application 

Internet 

telephone 

Telephony with 

bandwidth management 

DSL 

Other ADSL 

application 

ISDN Features for VoIP 

FRITZ!Box Fon provides many PBX features, including 

call waiting, call forwarding, three-party 

calls, and more, both for fixed-line and for Internet 

calls. The combination of fixed-line and Internet 

telephony permits new uses, such as the callthrough 

function to permit calls over the Internet 

from mobile phones. Furthermore, FRITZ!Box Fon 

supports convenient phone line features, both over 

the fixed-line and over VoIP. Features supported 

by SIP include three-party calls (3PTY), external 

call transfer (ECT), call diversion, and message 

waiting indication (MWI). 


■ PBX with two analog extensions 

■ SIP module for VoIP 

■ Connects to ISDN 

■ Connects to POTS 

■ ADSL modem 

■ Firewall 

PBX 

■ Assign dial-in numbers to the extensions 

■ Dialing rules for fixed-line and Internet calls 

■ Carrier preselect for fixed-line calls 

■ 100 speed-dialing numbers for Internet 

and fixed-line calls 

■ PBX features: internal calls and more 

Supported Features 

ISDN and VoIP 

■ Internal call forwarding 

■ External call forwarding 

■ Three-party calls 

■ Hold, alternate between calls, suspend 

and resume 

■ Caller ID suppression (CLIR) 

■ Caller ID (CLIP) 

■ Internal and external call transfer (ECT) 

■ Call waiting, and more 

VoIP 

■ Protocols: SIP, SDP, RTP 

■ Codecs: G.711 A-law, G.711 µ-law, G.726-40, 

DSL G.726-32, G.726-24, iLBC 

■ Dynamic codec management 

■ Use up to 10 SIP accounts 

■ Silence suppression 

■ Packet loss concealment (PLC) 

■ Dynamic jitter buffer 

■ Echo cancellation 

■ QoS: ToS, DiffServ 

Router Functions 

■ DHCP server 

■ Traffic shaping 

■ DynDNS client 

■ NAT firewall 

■ Port forwarding 

More Features 

■ Bandwidth management 

■ Call through function 

■ PBX linking 

■ Configuration wizard 

■ Internet statistics, and more 

©2005 AVM Computersysteme Vertriebs GmbH. 

Unless otherwise indicated, all brands mentioned are trademarks of AVM GmbH and are protected by law. 

This includes product names and logos in particular. Microsoft, Windows and the Windows logo are trademarks of the Microsoft Corporation. 

All other product and company names are trademarks of their respective owners. 13732/2005.01/1.000 

AVM Computersysteme Vertriebs GmbH · Alt-Moabit 95 · 10559 Berlin, Germany · Phone +49-30-3 99 76-0 · Fax +49 -30 -3 99 76-299 · www.avm.de · info@avm.de

AVM FRITZ!Box Fon - Topcom

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