IEC 62343-3-3:20 20作为IEC 62343-3-3:20 20 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 62343-3-3:20 20提供了波长选择开关的性能规范模板。目的是为波长选择开关性能的详细规范的准备提供一个框架。如果需要，通常会包括详细的产品规格或性能规格的附加规格参数。但是，本文件中规定的质量标准参数不会从详细产品质量标准或性能质量标准中删除。关于波长选择开关及其在DWDM系统中的应用的技术信息-IEC TR 62343-6-4中描述了模光纤。这第二版取消并取代了2014年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -对规范性参考文献的修改； -对术语和定义的修改。

IEC 62343-3-3:2020 is available as IEC 62343-3-3:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62343-3-3:2020 provides a performance specification template for wavelength selective switches. The object is to provide a framework for the preparation of detail specifications on the performance of wavelength selective switches. Additional specification parameters are often included for detailed product specifications or performance specifications if necessary. However, specification parameters specified in this document are not removed from the detail product specifications or performance specifications. The technical information regarding wavelength selective switches and their applications in DWDM systems with single-mode fibres are described in IEC TR 62343-6-4. This second edition cancels and replaces the first edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- modification of the normative references;
- modification of the terms and definitions.