Cisco Systems outlined its approach for offering an open, standards-based approach to video/IPTV deployment with multiple middleware vendors, headend platforms, conditional access devices, video servers and IP set-top boxes.Cisco said its strategy is to enable three layers of convergence -- network convergence, which saves providers money; service convergence, which binds networks and applications together; and application convergence, which helps them drive revenue. Network ConvergenceAt the Network Convergence Layer of the IP NGN, Cisco video/IPTV...