一、三网融合给广电带来的挑战(一)网络“模转数”之难三网融合的技术基础首先在于网络的数字化。中国有线电视网虽然比电信网络建设得晚,且大部分是宽带网络,但是,总体上数字化程度仍然较低。根据格兰研究提供的 First, the triple play to the challenges of radio and television (a) the network “model number of revolutions ” the difficulty of the technical foundation for the integration of the three networks first lies in the digital network. Although China’s cable television network construction than the late, and most of the broadband network, but in general the degree of digitization is still low. According to Grant research provided