Founded in 1978, Associated Telephone Design specializes in the design, installation and maintenance of networking equipment, such as digital switching and voice over Internet protocol solutions. The company maintains various locations throughout the Tri-State area. Associated Telephone Design maintains an inventory of Nortel Networks parts and employs a team of trained service and repair technicians. The company features business telephones and data networking products. It also offers call accounting and call center products, as well as voice and data cable installation services. Associated Telephone Design, a subsidiary of Network Voice and Data Communications, is an authorized reseller of products from Shoretel. It is a certified Cisco partner.