Communications Test Design, Inc. (CTDI) has provided groundbreaking maintenance service solutions to the telecommunications industry since 1975.  Over the years, CTDI has strategically diversified our Service Portfolio to include: Wireline Repair & Logistics, Wireless Repair & Logistics, Engineering and Installation services, Global Supply Chain solutions, and Product Engineering & Manufacturing. Today, CTDI services our global customers from 37 worldwide strategic repair and logistics locations supported by an experienced team of over 3,500 telecommunications professionals.