Stephen Vandegriff

ADTRAN, Inc. engages in the provision of networking and communications platforms and services focused on the broadband access market. It operates through the Network Solutions and Services and Support business segment. The Network Solutions segment includes hardware products and next-generation virtualized solutions used in service provider or business networks, as well as prior-generation products. The Services and Support segment offers ProCloud managed services, network installation, engineering and maintenance services, and fee-based technical support and equipment repair/replacement plans. The company was founded by Mark C. Smith in November 1985 and is headquartered in Huntsville, AL.

Digium, Inc. engages in the provision of hardware and software products to enterprises and telecommunications providers. It offers business phone systems, telephony cards, asterisk training, and asterisk hardware. The company was founded by Mark Spencer in 1999 and is headquartered in Huntsville, AL.

Cincinnati Bell Telephone Co. LLC provides communications solutions for address voice, data, wireless and internet. Its products include basic telephone services such as analog lines, calling features, wireless, digital services including digital trunks, ISDN-PRI, dedicated high-capacity services for voice, video and data. The firm serves in Cincinnati, Northern Kentucky and Southeastern Indiana. The company was founded in 1973 and is headquartered in Cincinnati, OH.