In the construction of a two-way access network for radio and television, PON EOC solution has been widely recognized for its low cost, high stability, and high bandwidth after years of practice. It has become the main technical solution for the radio and television access network.PON EOC solution can complete the transmission of CATV, telephone (voice), and computer data in the last 1KM of the HFC two-way network. Through the combination of EPON, GPON, EOC and HFC, it will greatly promote the application development of HFC digital two-way access and triple play.The core of the technical solution is to build a manageable, operational and maintainable carrier-grade HFC multimedia broadband access network on the basis of the existing HFC (Hybrid Fiber-Coax, fiber coaxial hybrid network) network stock resources, and fully combine the unique advantages of the HFC access of the radio and television and the telecommunications industry to develop broadband Internet services, VoIP voice services, and IPTV video-on-demand services on this network.

Main advantages and features:

1. Based on the existing HFC transmission network of the radio and television operators, there is no need for FTTB or FTTH complex transformation of the existing radio and television HFC network.

2. Combined with the good long-distance coverage and high reliable transmission rate of xPON, it can meet the needs of high-density users and high-bandwidth services.

3.  xPON and EOC standard protocol management facilitates the management and maintenance of products.

For PON+EOC solution, according to the different locations of the OLT and ONU, it can usually be divided into two network construction methods:

Method 1: Place the OLT in the front-end machine, and few OLTs complete the two-way network coverage for users in the entire area; it is suitable for the scenario where the access rate of the user's two-way network is low in the early stage. OLT is placed in the front position, which is convenient for wide coverage of users. There is no need to adjust the existing optical fiber and copper cable resources, low investment and high profit.

Method 2: Place the OLT in the community or building, and the OLT will perform two-way network reform coverage for users in multiple buildings. It is suitable for scenarios where users have strong demand for bidirectional transformation and high access rates for bidirectional transformation in mature period. And the fiber needs to be moved to the building, and the ONUs are installed in the corridor to meet the needs of users' high bandwidth and high penetration rate.