Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 9: Physical layer specifications and management parameters for 25 Gb/s and 50 Gb/s passive optical networks
信息技术系统之间的电信和交换局域网和城域网的要求第3部分:以太网标准修改件9:25Gb/s和50Gb/s无源光网络的物理层规范和管理参数