Introduction; Connection Problems - Devolo Giga Bridge Manual

11 Introduction

2 Introduction

2.1 Connection problems

For many fibre-optic providers, the connection
ends at the subscriber delivery point, which is the
termination point of the provider's Internet access.
This is often located in a basement, service en-
trance room or garage. From this point, the fibre-
optic connection is available for the NT/ONT.
Once the fibre-optic connection has been success-
fully connected to the subscriber delivery point,
the next step is to find the optimal place for the ac-
tive NT/ONT and router. Often the NT/ONT is
placed right next to the subscriber delivery point,
so the two devices can be easily connected to each
other. It is significantly more difficult to make the
following connection between the NT/ONT and
router, because it often requires recabling. After
all, the new high-speed Internet is supposed to
reach the terminal devices (e.g. smartphone, tab-
let, smart TV, laptop and game console) at full
speed. This is why most households have the rout-
er located in either the living room or a hallway.
devolo Giga Bridge
Connecting the NT/ONT and router
The NT/ONT and router are connected exclusively
by network cables with an RJ45 connector; often
large distances need to be bridged for this pur-
pose. So, when providing cabling, customers have
to pay attention to the technical conditions of the
available network cables. Depending on the dis-
tance that needs to be covered from the NT/ONT
to the router or a corresponding terminal device,
there are a few pitfalls. Fixed network cables,
which lead to mains sockets, for example, are al-
lowed to have a maximum distance of 100 metres.
If the distance is expanded beyond that, it is not
compliant with Ethernet connection standards and
will lead to high attenuation of the cable as well as
latency (delay from the transmitter to receiver),
which has a significant effect on the data transmis-
sion and cancels out the advantage of gigabit In-
ternet. If it is still necessary to cover long distances
in the house, then customers have to use interme-
diate repeaters. Here, however, it must be ob-
served that, depending on the circuit, five to ten
metres have to be subtracted from the maximum
cable length. So having clean, optimal cabling for a
new fibre-optic connection is not exactly trivial and
requires good preparation.