描述了基于以太网的无源光网络系统的框架结构、设计原则和网络规划；
The frame structures, design principles and network planning of system based on Ethernet Passive Optical Network (EPON) are described.
特别适用于EPON以太无源光网接入技术的FTTP光纤网络系统，作宽带无源光分路器(POS)使用。
Especially suitable for EPON Ethernet passive optical network access technology FTTP fiber network system, broadband passive optical optical distributor (POS) use.
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