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FRITZ!Box 6490 Cable
86
Extending a Wireless LAN Network
Switching Wireless LAN On and Off
You can switch the wireless radio network of the FRITZ!Box on
and off at any time, even when the device is hibernating.
Press the “WLAN” button on the FRITZ!Box briefly
or
Switch on the wireless LAN radio network using a con-
nected telephone
Wireless LAN on r96s1s
Wireless LAN off r96s0s
14.2
Extending a Wireless LAN Network
The range of a wireless radio network is not fixed. It depends
on
the wireless devices you are using for your wireless LAN
connections
interference in the vicinity of your wireless radio network
the structural conditions where you operate the wireless
radio network
the number of wireless devices in the vicinity of your
FRITZ!Box that work in the same frequency range
You can extend the range of your wireless radio network with
a wireless LAN repeater.
Or you can set up a second FRITZ!Box as a wireless LAN re-
peater.
Extending a Wireless Radio Network with a Wireless LAN
Repeater
You can extend your wireless radio network with a wireless
LAN repeater. In combination with the FRITZ!Box the AVM
FRITZ!WLAN Repeater is especially suitable. All models of the
FRITZ!WLAN Repeater series can be integrated into your wire-
less radio network and your home network by WPS Quick Con-
nection. Find out more in the Internet at:
en.avm.de/products/fritzwlan/
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Wireless LAN—Getting Technical
FRITZ!Box 6490 Cable
87
Using an Existing FRITZ!Box as a Repeater
You can extend the wireless LAN radio network of your
FRITZ!Box with an additional FRITZ!Box you already have. To
extend your wireless LAN, configure the repeater function in
this device.
You can configure a FRITZ!Box as a repeater by working
through the following steps:
1.
Open the FRITZ!Box user interface; see
page 25
.
2.
Enable the advanced view.
3.
Select the “WLAN / Repeater” menu and follow the in-
structions displayed on the screen.
In the Help of the FRITZ!Box user interface you can find de-
tailed instructions.
14.3
Wireless LAN—Getting Technical
A wireless LAN is based on standards defined by the Institute
of Electrical and Electronic Engineers (IEEE). These standards
describe, for instance, the transmission speeds, encryption
methods and frequencies used in a wireless LAN network.
Data Throughput
The FRITZ!Box supports your choice of the standards
IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n and
IEEE 802.11ac. Wirelsess devices based on one or more of
the standards listed can be used for wireless LAN connec-
tions with the FRITZ!Box.
The standards are intended for different frequency bands.
Standard
Frequency band
Gross Throughput up to
Net Throughput up to
802.11b
2.4 GHz
11 Mbit/s
5 Mbit/s
802.11g
2.4 GHz
54 Mbit/s
25 Mbit/s
802.11a
5 GHz
54 Mbit/s
25 Mbit/s
802.11n
2.4 / 5 GHz
450 Mbit/s
200 Mbit/s
802.11ac
5 GHz
1300 Mbit/s
650 Mbit/s
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FRITZ!Box 6490 Cable
88
Wireless LAN—Getting Technical
IEEE 802.11a
Because this standard works exclusively in the seldom used
5-GHz range, it offers the opportunity to transmit data rela-
tively free of interference from external influences. Wireless
devices that support 802.11a are much less common than
devices that work in accordance with the 802.11b/g stan-
dard.
IEEE 802.11b
With a maximum throughput rate of 11 Mbit/s, this is the old-
est wireless standard. Older wireless devices of the first gen-
eration can communicate with the FRITZ!Box using 802.11b.
However, if the wireless device supports newer standards
such as 802.11g, the latest standard should be used.
IEEE 802.11g
In this wireless LAN standard data are transmitted in the 2.4-
GHz range at a maximum gross throughput of 54 Mbit/s. This
standard is compatible with a wide range of wireless devices.
However, due to heavy use of the 2.4-GHz range, interference
is more common than in the less-used 5-GHz range.
IEEE 802.11n
This standard allows for high throughput rates and ranges.
The FRITZ!Box supports 802.11n in the 2.4-GHz frequency
band, and parallel in the 5-GHz frequency band. Modulation
processes and antenna techniques like MIMO (Multiple In-
put, Multiple Output) use whichever frequency band is avail-
able more effectively than the older standards.
Thanks to compatibility with the 802.11g standard, you can
also continue to use older wireless devices.
The use of the 802.11n standard—and thus the availability
of higher throughput rates—is possible only if the wireless
LAN connection is secured using the WPA2 security mecha-
nism (AES-CCMP).
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Wireless LAN—Getting Technical
FRITZ!Box 6490 Cable
89
IEEE 802.11ac
This standard provides for transmission rates in the gigabit
range. The high throughput rates are achieved using wider
wireless LAN channels, deeper modulation and more MIMO
streams. Channels can be 20, 40, or 80 MHz wide. Modula-
tions of up to 8 bit/256QAM are applied. The standard uses
only the 5-GHz range, which reduces interference with other
users.
This standard is compatible with the 802.11a and 802.11n
standards, which means it can be used with older wireless
devices.
The FRITZ!Box 6490 Cable has a second access point respon-
sible for the 2.4-GHz range. This allows wireless devices com-
patible with the 802.11b/g/n to be used as well.
Setting the Right Standard in the FRITZ!Box
The throughput rate that can be achieved in your wireless ra-
dio network depends on the wireless standards used by the
integrated wireless devices. These wireless standards must
also be set in the FRITZ!Box. Proceed as follows to check
which wireless LAN standards are set and change them if
needed:
1.
Open the FRITZ!Box user interface; see
page 25
.
2.
Enable the advanced view.
3.
Open “WLAN / Radio Channel” and select which wireless
LAN standards should be used for both frequency
bands.
Note the following for the configuration of this setting:
Your FRITZ!Box 6490 Cable can make two wireless net-
works available simultaneously for data transmission.
One of the wireless radio networks works in the 2.4-GHz
frequency band, and the other in the 5-GHz frequency
The use of the 802.11ac standard—and thus the availability
of higher throughput rates—is possible only if the wireless
LAN connection is secured using the WPA2 security mecha-
nism (AES-CCMP).
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FRITZ!Box 6490 Cable
90
Wireless LAN—Getting Technical
band. This means the FRITZ!Box can be implemented as
an especially flexible wireless access point for the vari-
ous wireless devices and applications in your network.
Set the standards of the two wireless radio networks in
the FRITZ!Box such that they are compatible with all of
the wireless LAN devices used in the wireless network.
Make a note of which standards the wireless devices in your
network are compatible with and then adjust the FRITZ!Box
settings according to the following information:
11n, 11g
In your radio network there are wireless LAN devices that are
compatible with one or both of the following standards:
802.11n
802.11g
In this case set the wireless LAN standard for the 2.4-GHz fre-
quency band to: 802.11n+g
11g, 11b
In your radio network there are wireless LAN devices that are
compatible with one or both of the following standards:
802.11g
802.11b
In this case set the wireless LAN standard for the 2.4-GHz fre-
quency band to: 802.11b+g
11n, 11g, 11b
In your radio network there are wireless LAN devices that are
compatible with one or all of the following standards:
802.11n
802.11g
802.11b
In this case set the wireless LAN standard for the 2.4-GHz fre-
quency band to: 802.11n+b+g.

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