DSL Filters on everything plugged into the phone line except your DSL Modem.
The 2.4gh phone is the culprit.
Can you change channels? If so, then change the channels on it. If not, then disconnect it and you should be good to go.
Neighbors that have a 2.4gh portable phone can also disconnect you.
Hope this helps.
Rick
Hello, I have an extremely frustrating and annoying issue that has been going on for about six months now. I am subscribed with ATT's SBC DSL service. Everytime someone calls me, or I turn on my telephone, my internet disconnects for about 15 seconds. After it reconnects, it will frequently disconnect randomly without anyone calling for a duration of about an hour or so.
I am going to list a few variables that may contribute to my problem. Please be patient as I may name a few factors that may not even effect my connection. I have 2 sets of phones in my house, a phone with a 5.8GHZ speed(Uniden) and a phone with a 2.4GHZ speed(Panasonic). I have DSL filters plugged into my phone jacks that are connected to my phones. Recently I have read that I should not use a filter for the phone jack that directly plugs into my modem. So currently there is no filter on the jack connecting to my modem. I also use a Linksys router and have another computer connected to the internet as well. If there are any other factors that may have contributed to the issue, I am more than willing to to provide more detail
.
I know it is not my modem or router acting up, as I have replaced both and still have the same issues. It is not the wires that connect from the jack to my modem, as I have also replaced it. If anyone has had the same issue or know a possible solution, I would be extremely grateful for any input. Thank you for your time. This problem has been extremely frustrating for me and to the 3 SBC technicians that visited my house and had no idea was what going on.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic