Hmm - confused. When you power off the router you say you can get your ntl connection. Do you swap cables when you do this or just turn off router? If you just turn router off it sounds like the cables aren't in the right ports (not an expert here you understand) (see quick set-up guide, which you probably have already
http://safecom.cn/code/product/WR/SW...0/FAQ/qig.html)