Oppo A37

Is it necessary that VDSL service present ADSL service is present as they both use telephone lines for functioning? I have an ADSL connection. The ISP has many VDSL plans too. I wanted to ask if only changing of my plan from ADSL to VDSL (I have already bought VDSL modem) could increase the speed Or VDSL has a different improved telephone line?
 
Is it necessary that VDSL service present ADSL service is present as they both use telephone lines for functioning? I have an ADSL connection. The ISP has many VDSL plans too. I wanted to ask if only changing of my plan from ADSL to VDSL (I have already bought VDSL modem) could increase the speed Or VDSL has a different improved telephone line?
Yes
 
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