从工作路径信道倒换到保护路径信道或从主用设备倒换到备用设备的过程称为保护倒换。
自动保护倒换 automatic protection switching ; APS ; Automatic Protection and Switching
保护倒换计数 protection switching count ; PSC
通道保护倒换 path protection switching
保护倒换间隔时间 Protection switching duration ; ProtectionswitchingdurationPSD
以太网自动保护倒换 Ethernet automatic protection switching
保护倒换时延 protection switching duration
双向线路保护倒换环 BLSR
保护倒换持续时间 PSD ; PSDProtection Switching Duration
It discusses the key technical features on OTN transport network and test methods on parameters,including the test of overhead and maintenance signal,multiplexing and cross-connect capability,and protection switching of the OTN transport plane,etc.
重点讨论了OTN传送平面的若干关键技术特征和参数的测试方法,包括OTN设备对G.709开销和维护信号支持能力的测试、OTN设备复用和交叉功能测试、保护倒换测试等。
参考来源 - 光传送网(OTN)测试方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
最后，本文介绍了基于状态转移表的自动保护倒换协议的硬件实现方法。
In the end of this thesis lay stress on introducing the hardware implementation of the APS protocol with a method based on state transition table.
在定量分析的基础上，对V型保护结构结构和光纤全保护倒换方式进行生存性比较。
Based on the quantitative analysis to V-protection structure, this paper makes comparison between V-protection structure and full duplex system.
为了保证MPLS网络的可靠性，MPLS快速重路由技术借助MPLS流量工程的能力，为主标签交换路径(lsp)提供快速保护倒换能力。
In order to ensure the reliability of MPLS network, MPLS fast Reroute (FRR) based on traffic engineering with the ability to provide fast protection and switching LSP capacity.
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