I moved my computer to another room where the phone jack is for a two-line phone...a single jack that offers line 1 and line 2. When hooked up to a one-line phone, only line one is accessible. My modem won't operate using this phone jack. I have to run a 50 ft extension from a single-line jack in another part of the house which uses line 2 only. I want my computer to use line 1. Is there any solution other than having the phone company install a dedicated phone jack?