ADSL vs. VDSL: What's the Difference?

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Key Difference

The difference between ADSL and VDSL is that ADSL is asymmetric digital subscriber line and it provides upstream rate 64 Kbps to 1 Mbps, and downstream rate of 500 kbps to 8 Mbps whereas VDSL is very high bitrate digital subscriber line which provides an upstream rate of  1.5 to 2.5 8 Mbps whereas downstream of 50 to 55 Mbps.

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ADSL vs. VDSL

The Internet is one of the most important things in our life’s. There is subscriber line that is used for the uploading and downloading things from the internet. Uploading is when you put our file on the internet on any platform that can be Instagram, YouTube, Facebook etc. whereas downloading is when you want to put any file from internet to your computer. You need subscriber line for this purpose, there are two types of subscriber line that are ADSL and VDSL that are asymmetric digital subscriber line, and VDSL is very high Bitrate digital subscriber line. If we talk about the main difference then the main difference ADSL and VDSL is that ADSL is asymmetric digital subscriber line, and it provides upstream rate 64 Kbps to 1 Mbps, and downstream rate of 500 kbps to 8 Mbps whereas VDSL is very high bitrate digital subscriber line which provides upstream rate of 1.5 to 2.5 8 Mbps whereas downstream of 50 to 55 Mbps. ADSL and VDSL that are asymmetric digital subscriber line and VSDL is very high Bitrate digital subscriber line are types of DSL, DSL is digital subscriber line that transforms an ordinary telephone line into a broadband communication link. This means you can use your telephone as your internet connection. After ADSL there comes VDSL that is very high bitrate digital subscriber line that is a technology that is very similar to ADSL. VDSL is very high bitrate digital subscriber line which provides an upstream rate of 1.5 to 2.5 8 Mbps whereas downstream of 50 to 55 Mbps. ADSL uses twisted pair cable whereas VDSL uses coaxial, fiber optic cable.  DMT is the modulation method that is used in VDSL, DMT is a discrete multitoned technique. DMT is a combination of QAM and FDM. VDSL uses short wires and provide higher speed as compared to ADSL.  Security is to provide that it offers by point to point links. To customized upstream and downstream seven different types of cables. VDSL uses services like POTS, ISDM, ADSL. ADSL is asymmetric digital subscriber line, and it provides upstream rate 64 Kbps to 1 Mbps and downstream rate of 500 kbps to 8 Mbps. In ADSL the distribution of bandwidth is not identical this means it provides unequal data rates at upstream and downstream. The difference between upstream and downstream is that upstream is uploading and downstream is downloading, and there is at downloading bit rate is higher. In ADSL twisted pair cable bandwidth is split into three bands the twisted pair cable is 1 megahertz.  The first part of band ranged from 0 to 25 kHZ, and this band can be utilized as a regular telephone service which is also known as POTS. Additional service consumes only 4 KHZ of the band. There is a guard band that separate the voice channels form the data channels. After first band, second band ranges between 20 to 200 KHZ this is used for upstream communication. After this comes third band that ranges from 200 to 1 Mhz.

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Comparison Chart

BasisADSLVDSL
Full Form Full form of ADSL is an asymmetric digital subscriber lineFull form of VDSL is VDSL is very high bitrate digital subscriber line
MeaningADSL is asymmetric digital subscriber line, and it provides upstream rate 64 Kbps to 1 Mbps and downstream rate of 500 kbps to 8 MbpsVDSL is very high bitrate digital subscriber line which provides an upstream rate of  1.5 to 2.5 8 Mbps whereas downstream of 50 to 55 Mbps.
Loop Reach ADSL has loop reach of 18000 feetVDSL has loop reach of 4500 feet
Common protocolCommon protocol of ADSL is PPPCommon protocol of VDSL is ATM

 What is ADSL?
ADSL is asymmetric digital subscriber line, and it provides upstream rate 64 Kbps to 1 Mbps and downstream rate of 500 kbps to 8 Mbps. In ADSL the distribution of bandwidth is not identical this means it provides unequal data rates at upstream and downstream. The difference between upstream and downstream is that upstream is uploading and downstream is downloading, and there is at downloading bit rate is higher. In ADSL twisted pair cable bandwidth is split into three bands the twisted pair cable is 1 megahertz. The first part of band ranged from 0 to 25 kHZ, and this band can be utilized as a regular telephone service which is also known as POTS. Additional service consumes only 4 KHZ of the band. There is a guard band that separate the voice channels form the data channels. After the first band, the second band ranges between 20 to 200 KHZ this is used for upstream communication. After this comes to the third band that ranges from 200 to 1 Mhz.

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What is VDSL?
After ADSL there comes VDSL that is very high bitrate digital subscriber line that is a technology that is very similar to ADSL. VDSL is very high bitrate digital subscriber line which provides an upstream rate of 1.5 to 2.5 8 Mbps whereas downstream of 50 to 55 Mbps. ADSL uses twisted pair cable whereas VDSL uses coaxial, fiber optic cable.  DMT is the modulation method that is used in VDSL, DMT is a discrete multitoned technique. DMT is a combination of QAM and FDM. VDSL uses short wires and provide higher speed as compared to ADSL.  Security is to provide that it offers by point to point links. To customized upstream and downstream seven different types of cables. VDSL uses services like POTS, ISDM, ADSL.

Key Differences

  1. Full form of ADSL is asymmetric digital subscriber line whereas the Full form of VDSL is VDSL is very high bitrate digital subscriber line.
  2. ADSL is asymmetric digital subscriber line, and it provides upstream rate 64 Kbps to 1 Mbps, and downstream rate of 500 kbps to 8 Mbps whereas VDSL is very high bitrate digital subscriber line which provides an upstream rate of 5 to 2.5 8 Mbps whereas downstream of 50 to 55 Mbps.
  3. ADSL has loop reach of 18000 feet whereas VDSL has loop reach of 4500 feet.
  4. Common protocol of ADSL is PPP whereas the common protocol of VDSL is ATM

Explanatory Video