Fiber optics with the FRITZ!Box
Internet at the speed of light
Fast, stable, and future-proof: Fiber optics use pulses of light to stably transmit data over kilometres without any loss of speed. Fiber optic networks are also immune to electrical and magnetic interference and offer symmetrical gigabit downstream and upstream speeds.
How fast is fiber optics?
The speeds that can be achieved with a fiber optics connection depend on the technology used by the fiber optic provider. In Germany, AON or GPON connections with speeds of up to 1 gigabit/s are offered, occasionally also XGS-PON connections with higher speeds. Due to the great potential for expansion of fiber optic networks, which theoretically also allow terabit speeds, much faster connections can be also expected in the future.
- AON: 1 Gbit/s (downstream and upstream)
- GPON: 2.5 Gbit/s (downstream) and 1.25 Gbit/s (upstream)
- XGS-PON: 10 Gbit/s (downstream and upstream)
Your provider can tell you which fiber optic technology is used at your location. You can find detailed information on the various fiber optic technologies in our guide.
How do you set up the FRITZ!Box for use with a fiber optic connection?
There are two different options for using the FRITZ!Box on a fiber optic connection:
Connect the FRITZ!Box directly to the fiber optic connection
FRITZ!Box models with integrated fiber optic modems can be used directly on the fiber optic connection, saving space and power.
- Connect the FRITZ!Box to the fiber optic socket and to the electrical socket. You can find step-by-step instructions for many fiber optic providers in our Router Freedom portal.
Connect the FRITZ!Box to a fiber optic modem (ONT)
If you cannot connect the FRITZ!Box directly, you can also use a network cable to connect FRITZ!Boxes to an existing fiber optic modem (ONT):
- Connect the fiber optic modem to the fiber optic socket and connect the FRITZ!Box to the fiber optic modem. Then configure the FRITZ!Box for use on a fiber optic modem.
Which FRITZ!Box for which fiber optics connection?
FRITZ!Box models with integrated fiber optic modems can be used with all AON and GPON connections with speeds of up to 2.5 gigabit/s. A few fiber optic providers also offer FRITZ!Box models for XGS-PON connections with higher speeds.
FRITZ!Box models with WAN ports can be used with any fiber optic modem (ONT). Make sure that the FRITZ!Box's WAN port is at least as fast as your fiber optic connection. Otherwise, the speed of the internet connection will be limited by the speed of the WAN port.
Our model comparison helps you select the right FRITZ!Box.
