IEC/TR 61156-1-3:20 11（E）是IEC 61156-1第3版（2007）:数字通信用多芯和对称对/四根电缆-第1部分:通用规范的补充。它涵盖以下主题: -6.3.5的近端串扰测试方法和长度校正程序； -6.3.6的远端串扰测试方法和长度校正程序； -测量的电缆段的级联，即使它们具有不同的设计。

IEC/TR 61156-1-3:2011(E) is a supplement to IEC 61156-1 Edition 3 (2007): Multicore and symmetrical pair/quad cables for digital communications - Part 1: Generic specification. It covers the following topics:
- the near-end crosstalk test methods and length correction procedures of 6.3.5;
- the far-end crosstalk test methods and length correction procedures of 6.3.6;
- the concatenation of measured cable segments, even if they are of different design.