IEC 62148-6:20 20 RLV包含官方IEC国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 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 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its 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.