Thanks Bapun. So if i purchase this for 999 rs is fine correct ? because the BSNL franchise whom i asked for new connection was saying new device you need to take and it will cost 3500rs.You need a VDSL router for FTTH. If looking at same specs router as your ADSL router, check Amazon.in: Buy D-Link DIR-615 Wireless-N300 Router (Black, Not a Modem) Online at Low Prices in India | D-Link Reviews & Ratings
he said DLINK Modem is only for ADSL connections and does not work with FTTH and you wont find ONT that is compatible with OLT of BSNL franchise is using.