Hi, I am using a BT Voyager 2500V router on a wireless network to connect to internet and during the last week I keep having disconnections from internet a few times per day, but after I restart the router the internet works again. When I say disconnection I mean that internet is not working (browser, downloads, etc), but the internet, DSL, wireless lights are still illuminating on my router indicating that there still should be internet? Secondly usually I have no problems accessing my router through a browser (192.168.1.1), but when this disconnection happens I cannot access my router at all. On the other hand the wireless network is working perfectly and I can share files between my two computers. For a month and a half I did not have such problems and I did not change any settings on my router, which makes me believe that it might not be the fault of router, but on the other it seems like it might not be the fault of my ISP since the internet light is illuminating on my router Can anyone give me some advice what to do? Any help will be appreciated. I recently made a format so it is not a virus/spyware problem.

try another router

I'd think the problem is not the ISP, as you are not even able to log into the router's private IP address.

Is your wireless network secure? The possibility exists that someone in your neighborhood is getting access to the internet through your wireless router. The unauthorized user will experience varying signal strengths; and because they may not be sure where the wireless router is, they may move around a bit for a better signal. When an unauthorized user loses their signal, they will click on "Repair", which will disconnect everyone on the network and renew all IP addresses. My suspicion is that someone else is accessing your connection and clicking "repair" frequently.

I did a troubleshooting check from my router (when the internet in working, since I cannot connect ot the router when internet stops working) and here are the results: Test the connection to your ADSL service provider Test ADSL Synchronization: PASS Test ATM OAM F5 segment ping: FAIL Test ATM OAM F5 end-to-end ping: FAIL Test the connection to your Internet service provider Test PPP server connection: PASS Test authentication with ISP: PASS Test the assigned IP address: PASS Ping default gateway: PASS Does anyone know what this "ATM OAM F5 segment ping" FAIL result stands for and if this is a normal result? Thanks.