ATC Voice/Data Inc. has been operating for 17 years providing customized, scalable communications solutions to businesses nationwide. ATC Voice/Data Inc. is fully authorized and certified to provide sales, design, installation, and service of the complete line of business telephone(PBX) solutions from Avaya, Nortel, Toshiba and 3Comm. Our staff are factory-certified experts with expertise in designing and implementing telecommunications and data communications solutions.