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Vanguard Communications Corp. is a Morris Plains, NJ-based company in the Telecommunications sector.
TABARIN is a Rochester, NY-based company in the Telecommunications sector.
Webcor Technologies is a Hayward, CA-based company in the Telecommunications sector.
Vision Voice and Data Solutions is a Englewood, CO-based company in the Telecommunications sector.
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.