Prerequisite – Digital Subscriber Line (DSL)
ADSL stands for Asymmetric digital subscriber line, whereas VDSL stands for Very High Bitrate Digital Subscriber Line.
The primarily disagree within the speed of information transmission or rate, wherever VDSL is considerably quicker than ADSL.
Let’s see the difference between ADSL and VDSL:
|1.||ADSL stands for Asymmetric digital subscriber line.||VDSL stands for Very High Bitrate Digital Subscriber Line.|
|2.||It uses either Carrier-less Amplitude Phase or Discrete Multitone Technique for modulation.||While it uses Discrete Multitone Technique for modulation.|
|3.||It uses Point-to-Point protocol rather than Asynchronous Transmission Mode protocol.||While it uses Asynchronous Transmission Mode protocol.|
|4.||The coverage of ADSL is 18000 feet.||While the coverage of VDSL is 4500 feet.|
|5.||The vary of upstream rate of ADSL is from sixty four Kbps to 1Mbps .||Whereas the vary of upstream rate of VDSL is from 1.5 Mbps to 2.5 Mbps .|
|6.||The vary of downstream rate of ADSL is from five hundred Kbps to 8Mbps.||While he vary of downstream rate of VDSL is from fifty Mbps to fifty five Mbps.|
|7.||ADSL provides the data service and POTS service.||It also provids the POTS service as well as symmetric data service.|