摘要：随着PON的规模应用和全业务运营的快速发展,运营商对PON系统在带宽需求、业务支撑能力、接入节点设备和配套设备性能等方面都提出了更高的期望。PON系统面向未来的演进方向和演进方式成为业界瞩目的焦点。本文介绍了40Gbit/sNG-PON2物理层要求标准G.989.2最新进展。
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