Voice and data cabling connects people around the world by phone, fax, and computer. It is the basis for virtually every network. Today’s voice and date cabling is engineered to balance high performance with moderate expense. The quality of the service depends greatly on the quality of the installation. Properly installed cabling will provide years of service for networks, in most cases outlasting virtually every device connected to it. Voice and data cables are routed between the entrance facility, where communications signals enter a building: to equipment rooms and telephone rooms. Voice and data horizontal cables are routed between telephone rooms or equipment rooms and individual workstations throughout the building.