Tellem's departure from active duty to consultant had been expected. Over the past several years, Tellem, 57, has wanted to ease out of her day-to-day role but has been persuaded by Moonves to stay on. In the new arrangement, Tellem has agreed to remain in charge of CBS' 50 percent stake in The CW Television Network, a joint venture with Time Warner's Warner Bros. In her new role, Tellem will work across all CBS divisions with a focus on developing production models and revenue streams for emerging media. No replacement for Tellem will be named, and her two key direct reports, CBS Entertainment President Nina Tassler and CBS Television Studios President David Stapf, will report to Moonves. Tellem has been at CBS for more than 10 years and before that worked closely with Moonves at Warner Bros. As president of the CBS Network Television Entertainment Group, she oversaw both the network and the production studio 'She has been looking for a new challenge and is very passionate about this transformative time in our business,' Moonves said in a statement. 