The Issue In 2009, ZTV began planning to updateits regional cable TV distribu- tion network.The existing TV distribution from headend to hub nodes was using legacy Intermediate Frequency (IF) modulation over fiber, which made integration with other services difficult. The IF transport platform was also reaching its end-of-life. Until now, ZTV relied on separate backhaul networks for TV, voice and data. The company recognized the need to integrate more services over the same fiber in order to save capacity for the future as well as improve and simplify management of the network. The new transport solution should support multicasting of SDTV and HDTV, highspeed broad- band internet, voice over IP, file transfer for exchange of local programs as well as enterprise data services over t

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