FRITZ!Box Fon 5113
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Glossary
securely and automatically and thus, most importantly, fa-
cilitates simple initial configuration of the ADSL terminal
equipment by the end customer.
The TR-069 protocol can be used for automatic configura-
tion only if it is actively supported by the given terminal
device. For this an Auto Configuration Client (ACC) must be
integrated in the device. The specifications for automatic
configuration of the ADSL terminal device are stored on
the Auto Configuration Server by the given Internet Service
Provider. The process of automatic configuration via TR-
069 is initiated by the ADSL terminal device. First the user
enters a security key and then the settings are retrieved
from the Auto Configuration Server and implemented in
the ADSL terminal device without any further interaction
with the user. During this process all of the communica-
tion between the ADSL terminal device and the Auto Confi-
guration Server takes place in encrypted form.
Traffic Shaping
Traffic shaping is a technology for the optimization of ca-
pacity loads in a communication connection. Especially
for asymmetrical DSL connections, using traffic shaping
can prevent that a download is delayed or blocked by high
upload traffic.
Data transfer in the Internet is generally based on the
TCP/IP protocol, which waits for the remote site to confirm
reception after sending one or more data packets. Addi-
tional data packets are not sent until this confirmation of
reception arrives. If no confirmation arrives over a longer
period of time, the non-confirmed data packets are trans-
mitted again. The dispatch of such a confirmation can be
delayed, for instance, because the bandwidth for transfer
(upload) is already being used by the data packets of
other applications. But since the remote site does not sig-
nal the reception of the expected confirmation packets un-
til after they have arrived, this could cause noticeable de-
lays in rendering a requested web site or a drop in the
throughput rate of a download. In the worst-case scenario,
the remote site will abort transmission after several appar-
ently unsuccessful attempts to transfer of the data pack-
ets. Typical causes for such a blockade situation include
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