How-To: Wiring VoIP to your phone jacks | Engadget The module pops open to reveal some color coded screws. Since our VoIP line will be the primary phone, we're disconnecting the red and green leads. Since some lazy tech didn't connect everything, we had to splice together the two sets of red and green wires. Normal phone wiring has Author: Will O'brien VoIP My House -- How to quickly distribute a VoIP phone VoIP My House How to quickly distribute a VoIP phone line to your entire house : My best guess is that the lightning strike induced a voltage on the phone wiring. So, isolate your VoIP device from the house wiring via a protected phone jack in a surge suppressor power strip Phone and Computer Connection Diagrams | Business Support Plug the computer into the VoIP phone using the PC ethernet slot. Plug the VoIP phone CAT5/6 cable into ethernet jack. The CAT5/6 cable from the jack should already be connected to the patch panel. The diagram below illustrates cabling when there’s a patch panel in place.