What is the difference between ADSL and VDSL?
Most people see fibre optics as VDSL, which is a misconception.
In fact, ADSL stands for Asymmetric Digital Subscriber Line and is one of the oldest generations of the Internet that can transfer information from the call centre to the desired location without disturbing the voice call using the telephone line.
The advantage of ADSL is that it does not require new lines and does not require re-cabling.
This type of internet is cheap and has a relatively simple installation. The download speed is relatively low, while the upload speed is slower than the download. The remarkable thing about ADSL is that the farther away your home is from telecommunications, the lower the quality and speed of the Internet. This means that nearby homes are faster than farther homes.
The word VDSL stands for Very-high-bitrate Digital Subscriber Line. It is a new generation of DSLs.
The first difference is that ADSL requires landline telephone lines, while VDSL is based on network cables, it needs to be wired from telecommunications to your home. VDSL download speed is almost five times that of ADSL and VDSL upload speed is almost ten times that of ADSL Is.
VDSL serves the customers from the optical coffee system (distribution line of subscribers with optical fibre input and copper cable output). VDSL quality and speed are not related to the distance from home to telecommunications and the distribution is the same for all. Of course, copper cable and Interference with Internet speed is one of the biggest disadvantages of slowing down VDSL speed.
ADSL costs are less than VDSL. For VDSL, proper infrastructure and cabling must be provided, while ADSL does not require these costs.
Few companies currently offer VDSL and it is not available to the public.