A data jack is one piece of office equipment that you may need to both create a reliable telephone system and enjoy a high-speed internet connection in your office. This data jack acts like a hardware interface between the building's phone wiring and your phones. It is fixed to the baseboard or the wall. In addition to phone systems, this jack also forms a useful part of the dial up systems in offices to connect to the internet. With this data jack installed, you can get internet access and perform work over the web smoothly and efficiently.