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DataJack, Inc. is a wholly owned subsidiary of Quamtel, Inc. (OTCBB: QUMI), a public holding company headquartered in Dallas, Texas. Quamtel provides a comprehensive portfolio of advanced telecommunications technologies, enhanced service solutions and next generation broadband service. Quamtel operates in the U.S. and on a global scale through its subsidiaries DataJack, Inc. and WQN, Inc.
CornerStone Telephone is a Troy, NY-based company in the Telecommunications sector.
Impact Interactions is a Stevensville, MD-based company in the Telecommunications sector.
Business Only Broadband (BOB) is a Westmont, IL-based company in the Telecommunications sector.
Opus Communications is a Mission, KS-based company in the Telecommunications sector.