3. Installation 1. Plug the exclusive power supply to POWER connector on the GVP. . Connect the power cable to the power adapter and plug the other end of the cable into a wall outlet. 3. Plug a phone cable into the jack labeled LINE on the back of the GVP. + We recommend you connecting power first, then connecting phone line to protect the modem inside the videophone. & GVP cannot be applied to a pin phone line jack such as a key phone.