Internet via cable fiber

This technology easily depends on VDSL

08. 03. 2020, 09: 51 | from


Cable fiber optic makes what DSL fails. It brings super-fast Internet to your home with Gigaspeed. But how does cable fiber actually work and what are the differences to DSL? Together with Vodafone we clarify on.

Data exchange over the fixed network is growing and growing. In the year 2019 over 110 gigabytes in Month per internet connection. More and more devices and more and more services that are used over the Internet have become an integral part of everyday life. The trend is rising sharply. It is logical that this trend requires a powerful internet infrastructure.

The problem with this: The solid DSL or VDSL is increasingly reaching its physical limits in terms of data throughput and speed.

But there is already a technology available with cable fiber that can provide up to 4 times faster internet than the fastest DSL, VDSL with 250 Mbit / s enabled. And speeds up to one gigabit are allowed. We show how cable fiber works and which advantages of the Gigaspeed technology offers.

Coaxial versus telephone cable

So far, most Internet users in Germany still connect to the Internet via DSL or VDSL lines. However, the networks made of copper cables pose a growing problem in two senses. Because in addition to the constantly increasing data throughput requirements, the transmission speed drops significantly with DSL and the susceptibility to interference increases even at short distances. The loss of speed also increases the longer the signal is passed through the copper cable.

So the actually fast fiber optic internet signal from the distribution box is successively slowed down and then arrives throttled on the wifi router. With increasing distance from the distribution box to the user and thus the increasing distance from converting the signal from fiber to copper, this braking effect has a stronger effect. Therefore, today only bandwidths of up to 250 Mbit / s possible via VDSL.

Cable-fiber releases the internet brake


Different with cable fiber, where the fiber Internet signal with real gigabit speed is transmitted from the distribution box via the coaxial cable of the TV cable connection.

This is made possible by the new cable protocol DOCSIS 3.1 (Data Over Cable Service Interface Specification), which makes better use of the capacity of cable fiber optic technology and in combination with Gigabit transmissions over kilometer distances allowed.

The new DOCSIS 3.1 standard uses the data conductivity of the cables much more efficiently thanks to a more efficient modulation process. At the same time, it minimizes braking errors in the transmission and interference in the frequencies. The result is a network that even has data rates of up to 10 Gbit / s in the download and up to 1 Gbit / s in the upload. This also guarantees future security for many years.

Existing infrastructure as an advantage

Another great advantage of the Cable fiber optic technology consists of the existing infrastructure: In buildings, no new cables have to be laid for gigabit speeds if they are already using the standard coaxial Vodafone TV cable connection cables. The use of cable fiber optics thus only requires a change at the house feed point and a new modem in the apartment or house.

With Vodafone cable fiber optics safely and quickly into the Internet future

Vodafone is currently 17 Millions Gigabit access ready. By 2022 the company plans to sell almost its entire cable Network with 24 Trim millions of connections to gigabit speed – together with fiber optics, it will even be 25 millions. This means that Vodafone will implement more high-speed connections for Germany's citizens and companies than all other competitors combined in the next few years.

And that's not all, because Vodafone is making the switch to Gigaspeed -Internet with attractive offers , 150 Euro exchange premium, complete exchange service and free WiFi router are now even more attractive.

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