If you subscribe to a nationwide VoIP service (Voice Over Internet Protocol) service, then you can find out that they only supply a phone jack, and they have no plans to activate the phone jack which Already have the plug in your phone already. Among the recommendations included buying a wireless phone system with many handsets or buying a wireless phone jack system. Because they will not do it for you, it’s a good idea to learn how to activate all your phone outlets yourself.
In your network interface box outside your home, disconnect all Blue and Blue / White pairs (voice line) from the terminals, which connect to each phone jack.
Electricity binds all blue and all blue / white wires together. It connects all the phone jacks at one point. Use a short terminal bar. You can also use wire nuts or similar connectors. Just tie the stars, which are exactly the same together. Do not tie blue stars with blue / white stars
Connect the orange and orange/white wires (the DSL line) to each phone jack.
Inside the house, install a two-jack faceplate on the outlet you wish to connect your VoIP device to.
On one of the two jacks, connect the blue & blue white wires (the voice line)
On the other jack, connect the orange & orange/white wires (the DSL line)
Install faceplate, then connect phone jack to voice jack on VoIP device, and connect your modem to DSL jack. These connections are made with standard modular phone cords.
Enjoy your new VoIP device. Your VoIP device will now provide a dial tone to all phone jacks in your house. Phones plugged in all jacks will be on the same VoIP line