IEC 62148-6:20 20作为IEC 62148-6:20 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 62148-6:20 20涵盖了国际电信联盟（ITU）作为ITU建议G.983.1推荐的异步传输模式-无源光网络（ATM-PON）系统光收发器的物理接口规范。这第二版取消并取代了2003年出版的第一版，构成技术修订。与上一版相比，此版本包括以下重大技术变更: -第4条中类型的不一致已得到解决； -前言中的部分和标题列表已被删除； -参考文献已更新。

IEC 62148-6:2020 is available as IEC 62148-6:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62148-6:2020 covers the physical interface specification of optical transceivers for asynchronous transfer mode-passive optical network (ATM-PON) systems recommended by the International Telecommunication Union (ITU) as ITU Recommendation G.983.1. This second edition cancels and replaces the first edition published in 2003, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- inconsistency of types in Clause 4 has been resolved;
- part and titles list in the Foreword has been deleted;
- references have been updated.