So its just a usual night after Iftar. I am all filled up sitting on my laptop browsing Pakwheels and educating people over social platforms regarding Pakistan's real problems :p. I have my PTCL Smart TV running in the background and life is good.
Suddenly the power goes out and as usual my DSL modem & router are shifted over to the UPS but for some reason i loose internet connectivity. I had to move my *** to the other room where the equipment is connected. I restarted everything and waited for connectivity and NADA!. I realized i have lost the Wifi capability as well. Anyways i reconnected the WIFI and logged into my DSL router's setting and to my surprise all router settings are back to factory! . Checked my WIFI, and the all settings are back to factory there as well including the WIFI network key. 
I reconfigured my WIFI & then my ZTE DSL but failed to achieve DSL connectivity. Called the PTCL guys who made me wait 30 minutes and then handed me over to an absolutely dumb op i mean my wife probably has greater skills than him. He finally asked me to wait "until he connects me to the supervisor" and i was once again left with the torturous music and ads. I finally gave up and went to bed, called PTCL in the morning from work and they told me that its an exchange fault which is very very weird. How can an exchange fault wipe out settings on my WIFI router? First of all its weird and secondly it seems impossible. I got home, reconfigured by old TP-LINK modem and achieved connectivity over a different VCI/VPI of 0/135. I Reconnected my ZTE (which i got from ptcl when i bought smart tv services) reconfigured it and got the internet running. The problem for Smart TV remains as is, i tried contacting PTCL but was put on hold again n again.
The problem is, i never checked my router setting after smart tv was installed so i have absolutely no idea . I did some research online but i still have no clue how to set it up.
Expert help will be highly appreciated.
THanks