36
Configuring Advanced Settings
Qos (Quality of Service)
Many communication and multimedia applications require high speed and large band-
widths to transfer data between the local network and the Internet. However, for many
applications there is often only one Internet connection available with limited capacity.
Qos (Quality of Service) divides this capacity between the different applications and
provides undelayed, continuous data transfer where data packets with higher priority
are given transmission preference.
The QoS configuration dialogue enables you to optimise the transmission behaviour for
certain applications. For example IPTV is your favourite application and so you want to
ensure that no other application will disturb the transmission of IPTV data.
ì
In the
Advanced Settings
menu, select:
Internet
–
Qos
.
All settings apply for the displayed connection service which you selected for processing
in the
Advanced Settings
–
Internet
ì
Select the option
Differentiated services
, i.e. the prioritisation of certain services
for the data transfer between your network and the Internet.
For each
Priority
is specified which data packets are to be given priority of transfer. In
addition,
PHBs
(Per Hop Behaviours) are used to decide whether data packets are to be
forwarded immediately and ahead of all others (
EF
, Expedited Forwarding), guaranteed
and without data loss (
AF
, Assured Forwarding), or normally (
BE
, Best Effort). If your
application already supports QoS, it determines the priority automatically. Your device
recognises this when forwarding. It recognises certain
Predefined applications
and
assigns each packet the relevant priority. You can also define what proportion of the
bandwidth for your Internet connection is to be made available to a particular class as
Allocated bandwidth
.
ì
Select the
Allocated bandwidth
for
Predefined applications
.
ì
Click
OK
to save and apply your changes.
