I cannot figure out the setup you have, Cordless, no dial tone, Ok. what about calling the system that it is on? Are you calling the number that the phone is on? Is the phone 1 of several handsets? Charge light will be on, a new battery takes about 16 hrs to get to fully charged, recommended in instructions. New battery, will not make a hand set that is fault work, If other handsets on the system work, I would think hand set, could be a setup problem, where you need to scan for the base, BUT you would of had the same with the other handsets, More info is needed to go further
SD, March 2011