How can I access my Tp-link router from anywhere in the world.

We have PTCL internet connection with PTCL ADSL Router. Actually I have taken internet connection from my neighbour who has ADSL router. I tried to enable remote access in my Tp link router and open port but failed.
So, guide me how can i access In my Tplink router while having ADSL router.
Thanks In anticipation!