
Larger networks and sports broadcasters are in the vanguard of IP routing, but local stations are following more slowly. Business needs are driving the pace of transition, and HD-SDI routers are far from disappearing. NBCUniversal Owned Television Stations’ new facility for WCAU-WWSI, its Philadelphia duopoly, uses Grass Valley control software and IPG (IP gateway) cards working with Cisco switches to bridge the HD-SDI and IP worlds.