We've been having problems with our router for the last month or so. All the lights on the router suggest everything is fine but all our devices (TalkTalk TV box, phones, laptop) will intermittently not connect to the router. When this happens I'm also unable to connect to the router via http://192.168.1.1/
We have to switch the router off and back on again using the switch on the side to re-boot it - this fixes the problem straight away, but it resurfaces again... pretty much a daily problem now.