Tellabs, Inc. is engaged in designing and marketing equipment and services to communications-services providers worldwide. The company operates in four segments: optical, data, access and services. Its products and services, in combination with its Tellabs 8000 Intelligent Network Manager, enables its customers to deliver wireless and wireline voice, data and video services to business and residential customers. It sells its products domestically and internationally through its field sales force and distributors/partners. In December 2013, Marlin Equity Partners LLC, through its Blackhawk Merger Sub Inc wholly-owned subsidiary, acquired the entire share capital of Tellabs Inc.