You will need to setup your network. Anyways try this software in the link Download TD-W8951ND Easy Setup Assistant 1.0.10.1126 Free - Quickly connect and configure your router with this tool - Softpedia
Have you already set up your new router according to your ISP's settings? If not then do the settings as per your old modem, and your mobile should easily be able to connect to it via wifi.
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