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Telephone and Data Systems, Inc. is a Chicago-based telecommunications service company providing wireless, local- and long-distance telephone, broadband and video services to approximately 7 million customers in 36 states through its business units TDS Telecom and U.S. Cellular. The company began as a rural phone company in Wisconsin in 1969. In 1983 it founded U.S. Cellular as a subsidiary.
Packet Digital pioneers an innovative approach to using autonomous system-level power management to achieve dramatic power savings. The unique, industry-leading, patented architecture is flexible and portable across multiple applications, from laptops to handsets, from servers to embedded devices.
AVOXI is a cloud communications provider focused on meeting the international calling needs of call center, hotels, tour operators and global enterprises around the globe.
RNK Communications is one of the leading companies in the Telecommunications sector.
C Spire is an advanced technology company that delivers customer-inspired, nationwide wireless network services, business solutions and 1Gbps Fiber to the Home Internet / HDTV / VOIP.