Interactive Data & Telephone specializes as a provider of telecommunication solutions. Based in Corona, Calif., it offers an array of products and services, such as voice over Internet protocol (VOiP) systems, intergrated voice mail and paging, LAN and WAN networking, audio/video conferencing and structured cabling. Additionally, it provides hybrid key systems, closed-circuit television (CCTV), training, support, upgrades and documentation. Interactive Data & Telephone carries products of various brands, including NEC America, Toshiba and Mitel. It also provides cabling installation and infrastructure design.