Be careful if you need the dsl modem in the router you are likely not going to be able to load third party firmware. There are issues with the drivers being distributed with a open source product. You can if you are really ambitious link your own image and include the drivers, it is just you can not then provide the image to someone else. It still may not be possible if it is not running the correct chipset and there is little if any interest in the third party firmware community of supporting any device that has a dsl modem in it. I have only seen a very limited number of discussions on how to link a router with a dsl modem.