Nokia must decide this week how it wants to proceed with its Nokia Siemens Networks venture. While Siemens is almost certain to sell its stake, the telecom-equipment firm has turned into a cash cow for Nokia and is helping support its smartphone business turnaround efforts, analysts say. NSN contributed 46% of Nokia's sales in 2012, compared with 30% when CEO Stephen Elop first came to the company. Nokia has several options: find a partner to replace Siemens, launch a public stock offering or secure a backer to either fund Nokia's sale of its stake or allow the Finnish company to take control of NSN.
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