Data & Telephone


Telephone and Data Systems, Inc. is a Chicago-based telecommunications service company providing wireless products and services; cable and wireline broadband, TV and voice services; and hosted and managed services to approximately 6 million customers nationwide.

Other Services

  • DG Set

    A DG Set is the combination of a diesel engine with an electric generator (often an alternator) to generate electrical energy. This

  • CCTV

    Surveillance of the public using CCTV is common in many areas around the world. In recent years. cameras has been introduced as

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