D-LINK 2750U is a wireless adsl router with modem. I used it and find it very useful in its class as per its price and availability. D-link has a dedicated toll- free number which gives good telephonic supn this router there is an adport in case installation or troubleshooting help is required.
In this 2750 u model there are multiple options it can be used for bsnl or mtnl broadband and it can be used in cable net like airtel, tikona etc, and it has a unpublicized feature of usb slot which can be used to use usb data card(dongle) and use it as wifi or to take backup of any pc.