Teleco Charleston specializes in the sale of voice and data equipment. Its merchandise includes telephone systems and voice and data cabling, including Cat 6. It also offers network services, system design and maintenance support. Teleco has partnered with companies such as 3COM, Panasonic, Nortel, Mitel, Avaya/Lucent, Toshiba, TELECO, Active Voice, Star2Star, HP, NEC, Ortronics, Corning Fiber and ADC/Kentrox.