Here’s the problem. We have a telephone entry point down stairs by the front door and both our computers are upstairs. So OK, we got a ‘special’ cable to carry the signal upstairs, when we changed to Broadband. We got two modems from Freeserve as we wanted to be able to use either machine, without having both on via networking. So we plug one machine in and it works perfectly, take the plug out and plug in the other machine and, again, it works. Now we bought a dual connector, one male plug one side and two female plug holes the other side. Plug both computers in and nothing works. With the dual connector not even one machine will work. We tried another dual connector, but still the same. Any suggestions.
It sounds like your Broadband modemes are hand shaking this will not work i have two modems running with AOL Broadband i have master socket downstairs extension cable from this to feed upstairs i have no problems with the BT Voyager all i can even leave both computers powered up but i could not do this with a Dlink Modem i had to power one computer down.I trust your using a ADSL filter