Abstract: This paper firstly introduces the work principle and main characteristics of EPON and EOC technology, and discusses the CATV network bidirectional reconstruction of the existing HFC network based on EPON+EOC or EPON+LAN. Through a bidirectional reconstruction design examples in commercial district, expounds the design ideas based on EPON+EOC in CATV network bidirectional reconstruction. It can be seen that the EPON+EOC technology can extremely save the investment in the network construction, which is the best choice for residence community and commercial district. It is the suitable network reconstruction solution for integrating telecom, broadcasting and Internet networks in China broadcasting industry.

Key words: EPON, integration of the three networks, bidirectional reconstruction