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

  • Access Control

    Physical access control is a matter of who, where, and when. An access control system determines who is allowed to enter or

  • Fire Fighting & Fire Detection

    A fire alarm notification appliance that is used in the United States and Canada, a Wheelock MT-24-LSM horn/strobe.A fire alarm system has

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