How to setup a new Netgear AC1200 router

> How can I setup up a new AC1200 wifi dsl router?

   Some people would fetch a copy of the User Manual, and follow the
instructions therein.

   Note that "AC1200" is a speed, not a model number.  But we've been
through all that before (apparently without effect):

      https://community.netgear.com/t5/x/x/m-p/1528811

   Note, too, that there's a specific forum for "DSL Modems & Routers":

      https://community.netgear.com/t5/x/bd-p/home-dsl-modems-routers