Developments of new, high speed PLC systems (BPL, Broadband Power Line) and some other network access and in-home technologies will also be discussed with technical and legal constraints, mainly concerning unwanted interference with existing services.

• 第三部分：从技术和法规约束问题角度，讨论新的高速PLC系统（BPL，宽带电力线）和其它网络通道和入户技术发展状况，主要针对现有服务中的有害干扰展开。