I am currently using PTCL ADSL routet for wifi. I want to replace it with TP LINK MR 3420. Is it possible to use any router without using the ptcl modem/router. If yes how to configure it? Kindly guide about it
For an ADSL connection you definitely need a modem or a modem with a built in wifi router. You cannot just use a stand alone wifi router that does not have an adsl modem inbuilt. I am not familiar with the model you have mentioned, just check if it has an adsl modem inbuilt and is compatible with PTCL.