D7000 2.4hz channel is not working

   You've posted a question (badly) about a DSL modem+router in a forum
intended for "Cable Modems & Routers", and included approximately no
useful information in it.  "not working" is not a useful problem
description.  It does not say what you did.  It does not say what
happened when you did it.  As usual, showing actual actions with their
actual results (error messages, LED indicators, ...) can be more helpful
than vague descriptions or interpretations.

   Firmware version?

   To begin, visit http://netgear.com/support , put in your model
number, and look for Documentation.  Get the User Manual.  Read.