ADSL, VDSL: definition, flow and eligibility, ADSL, VDSL and VDSL2: what are the differences?

ADSL, VDSL and VDSL2: the comparison

The main difference comes from the connection speed proposed because the ADSL connection is much lower than that of VDSL. However, if VDSL 1 and VDSL 2 are much faster, This is only correct if the user’s modem is at a Distance less than two kilometers from the NRA. Beyond this distance, the VDSL 1 offers a speed lower than that of the ADSL 2+ and the speed of the VDSL 2 is equivalent to that of the ADSL 2+.

ADSL, VDSL: definition, flow rates and eligibility

If a person wishes to subscribe to an internet offer going through telephone lines because their accommodation is not eligible for fiber, two types of technologies can be offered to them: ADSL or VDSL. What do these names mean, what flows can we hope in ADSL or VDSL, and how to know what technology we are eligible ? All answers here.

Eligibility test and subscription ADSL/VDSL Our advisers perform an eligibility test for you and direct you to partner offers that meet your needs

  • The essential
  • L’ADSL and VDSL work similarly, using telephone lines.
  • As part of an internet offer, the operator offers the best connection available at the home concerned. Thus, the user will be offered theADSL, L’ADSL2+ where the VDSL2 Depending on the eligibility of its line.
  • Offers in VDSL2 overall allow you to benefit from an equivalent or better flow rate than in ADSL.

What are ADSL and VDSL ?

Definition of ADSL

L’ADSL, For Asymetric Digital Subscriber Line, is a digital communication technique to pass digital data through Coppery cables of telephone lines, Regardless of the telephone service.

ADSL arrives for the first time in France in 1999, offering a connection speed of 512 kb/s. In 2004, ADSL 2+ appeared in France, making it possible to reach a connection speed of 10 Mb/s. Today this technology allows a line to reach a Maximum rate of 25 Mb/s.

L’ADSL 2+ is an evolution of the ADSL which makes it possible to obtain a better speed by using more carrier frequencies. However, these flow improvements are only noticeable if the connected home is less than 3 kilometers from the telephone central.

Definition of VDSL

VDSL boxes

VDSL 1, for Very High Bitrate Digital Subscriber Line, uses the same technology as ADSL By passing digital data through the copper pair of a telephone line. However, VDSL signals being transported on the line simultaneously and without interference, the Flower reached is greater than that of ADSL. Deployed from 2002, only in Paris at first, the VDSL 1 remains, even today, subject to the regulation of ARCEP.

THE VDSL Authorizes a connection speed up to 55 Mb/s. However, this flow can only be achieved if the connected accommodation is less than a kilometer from the subscriber connection node (NRA). Beyond this distance, the connection is lower than that of an ADSL 2 line+.

The evolution of VDSL technology is the VDSL 2, which makes it possible to reach a theoretical (therefore maximum) connection of 100 Mb/s, is the same speed as the current optical fiber. However, this speed is only very rarely reached because, once again, the user’s accommodation must be less than a kilometer from the NRA to reach this speed.

Currently, 14.5% of the 31 million ADSL lines are eligible for VDSL 2 (VDSL 1 being replaced by VDSL 2), nearly 4.5 million lines.

ADSL or VDSL: what differences ?

From the point of view of the technology used, there is no significant difference between theADSL and VDSL. Indeed, these two techniques pass digital data through copper copper pairs.

The other thing in common between these two techniques comes from their price as part of a subscription. That the ISP offers the user the ADSL or the VDSL, the subscription price will not vary depending on the technique used.

The main difference comes from the connection speed proposed because the ADSL connection is much lower than that of VDSL. However, if VDSL 1 and VDSL 2 are much faster, This is only correct if the user’s modem is at a Distance less than two kilometers from the NRA. Beyond this distance, the VDSL 1 offers a speed lower than that of the ADSL 2+ and the speed of the VDSL 2 is equivalent to that of the ADSL 2+.

VDSL VS ADSL flow: the theoretical flows of operators

Concretely, to What flows Can we expect ADSL or VDSL Today ? This table summarizes the indicative values ​​given by the different operators:

How to perform an eligibility test VDSL or ADSL ?

You want to carry out an eligibility test with one of our advisers ?

How to know if you can benefit from VDSL or if you are only eligible for ADSL ? To make a VDSL eligibility test, Three solutions exist:

  1. Perform a test by phone with Selectra : in a few minutes, an advisor tells you about your eligibility. ADSL, VDSL, VDSL2, or even fiber, you will know what technology you can claim to take out your internet offer. For this, make up the 09 75 18 80 51.
  2. Perform an online test on our page dedicated to ADSL eligibility: by entering your postal address you will know in a few moments if your accommodation is eligible for fiber and if not eligible for ADSL
  3. Perform a test in store: You can go to the Internet supplier shop that interests you to do an eligibility test with an advisor. Depending on your passage time, waiting may be expected.

Ask for a free reminder by an orange advisor:

Service reserved for new subscriptions. Already customer ? Please contact 3900.

By clicking on “validate”, you agree to be recalled by an orange advisor. Your number will be used only for this recall request and will not be sent to third parties.

Ask for a free reminder by an orange advisor:

Service reserved for new subscriptions. Already customer ? Please contact 3900.

An orange advisor will remind you of within 48 hours

By clicking on “validate”, you agree to be recalled by an orange advisor. Your number will be used only for this recall request and will not be sent to third parties.

Updated on 09/15/2023

Former editorial manager, Marianne joined Selectra in 2014. A graduate of a Master 2 International Media, she is the manager in charge of all the contents of the Télecom pole.

ADSL, VDSL and VDSL2: the comparison

Julia Jimenez Responsible for telecom content

Review 07/25/2022 by Julia Jimenez
-/5 – No vote – no comments

ADSL and VDSL are similar technologies insofar as they work thanks to your telephone line. Depending on your eligibility, your operator can offer you better quality internet access via ADSL2+ or VDSL2. Speed ​​and internet connection stability are then optimized.

ADSL, VDSL and VDSL2

VDSL, a faster version than the ADSL

The flows constitute major differences between the two technologies since the VDSL is based on the functioning of the ADSL.

With the ADSL, the downward flow varies from 1 to 15 Mbps, while the upward speed revolves around 0.5 to 1 Mbps. With the VDSL, the downward flow ranges from 15 to 70 Mbit/s. Ascending flow can increase up to 50 Mbit/s according to your Internet access provider (ISP).

The distance between the modem and the subscriber connection node (NRA) is decisive. If the modem is more than 2 km from the NRA, the speed of the Internet connection in VDSL is lower than with an ADSL Internet box.

VDSL2, an evolution of VDSL1

This technology also requires that you are connected to the fixed telephone network. On the other hand, the downward flow is even faster since it goes up to 80, or even 100 Mbit/s for VDSL2. As for the theoretical amount of speed, it can reach 15 to 70 Mbit/s.

The distance between the Internet box and the NRA remains important. Beyond 2 km, the speed ensured by the VDSL2 is equivalent to that guaranteed by ADSL, from 1 to 15 Mbit/s in descending speed.

VDSL and VDSL2: flows conditioned by the distance

Unlike optical fiber, DSL or XDSL technologies do not allow you to have an identical flow everywhere. A weakening of the signal and the connection speed is indeed noticed as one moves away from a tie of connection to the fixed telephone network. You should know that these connection nodes are connected to sub-retireers who relay the signal to your home. The distance between your modem or your router and the nearest distributor therefore defines the flow of your connection.

More concretely, connection flows decrease as follows:

  • 95 Mbps for Internet equipment installed at a maximum of 150 meters from the distributor,
  • 80 Mbps over a distance up to 300 meters,
  • 50 Mbps for distances up to 600 meters,
  • 35 Mbps up to 900 meters,
  • 25 Mbps if the distance between the equipment and the distributor goes up to 1,200 meters.

DSL technologies allow you to enjoy a high-end connection. However, the flows in question remain variable depending on the FAI. So remember to compare internet offers taking into account your uses to identify the package that suits you best.

ADSL, VDSL or fiber: what to choose ?

In download as in upload, the flows offered by XDSL connections are far lower than those provided by optical fiber.

Perform our ADSL debit test to analyze your gangway. You will then be fixed on the capacity of your domestic network to transmit the data. You will also be informed about the upright debit and the Download debit. To do this, suspend all of the current downloads. Also close all the internet tabs and windows that use your gangway. Let only the tab dedicated to the test. Ideally, use an ethernet connection to connect your computer to the modem/router. In a few seconds, you will be informed about the quality of your Haut-Débitant connection operating fixed telephony.

If your flow is too low to cover your needs, you can consider subscribing to another offer. You must nevertheless ensure your eligibility for VDSL or fiber eligibility.

The fiber gives you a minimum drop -down flow of 300 Mbps for a upload speed of at least 200 Mbps. Our online tools intended to test the flows also work with a fiber connection. There too, it is best to use an ethernet cable. In parallel, this technology is practically not impacted by debit loss caused by distance since it is not connected to the telephone network.