Siemens has started talks with private-equity firms about the sale of its share in Nokia Siemens Networks, the Wall Street Journal reported on Friday. The German company's 50 percent share of NSN (Nokia Siemens Networks) could be worth more than 7 billion ($9.3 billion) including debt. The news doesn't come as a surprise to Gartner research director Sylvain Fabre, who in March wrote that Siemens would seek to finalize a deal this year.