ISO/IEC TR 11801-9906:2020（E）涵盖了由平衡1对布线组件构成的通道规范，主要用于工业自动化和过程控制应用。 信道规范与相应的IEEE 802.3单对以太网（SPE）应用一致，并参考以下IEEE SPE物理层规范中的链路段规范: •；ISO/IEC/IEEE 8802-3:2017/AMD4，1000MB/s:1000BASE T1类型A=15m，1000BASE T1类型B=40m； •；ISO/IEC/IEEE 8802-3:2017/AMD1，100MB/s:100BASE T1，=15米； •；IEEE802.3cg，10Mb/s:10BaseT1s，=15M；10基T1L，等于1000米。 信道组件规范参考了相应的IEC平衡1对电缆和连接器规范。 信道规格包括IL、RL、TCL、耦合衰减和外来串扰参数规格。 信道EMC相关规范包括电磁隔离等级E1、E2和E3，这些等级是根据ISO/IEC 11801-1中规定的MICE标准环境特性系统定义的

ISO/IEC TR 11801-9906:2020(E) covers channel specifications, for channels constructed from balanced 1 pair cabling components, primarily intended for use in industrial automation and process control applications. The channel specifications are consistent with corresponding IEEE 802.3 single-pair Ethernet (SPE) applications and are referenced from link segment specifications in the following IEEE SPE physical layer specifications: • ISO/IEC/IEEE 8802-3:2017/AMD4, 1 000 Mb/s: 1000BASE T1 Type A, = 15 m, 1000BASE T1 Type B, = 40 m; • ISO/IEC/IEEE 8802-3:2017/AMD1, 100 Mb/s: 100BASE T1, = 15 m; • IEEE 802.3cg, 10 Mb/s: 10BASE T1S, = 15 m; 10BASE T1L, = 1 000 m. The channel component specifications are referenced according to corresponding IEC balanced 1 pair cable and connector specifications. Channel specifications include IL, RL, TCL, coupling attenuation, and alien crosstalk parameters specifications. Channel EMC related specifications include electromagnetic isolation levels E1, E2 and E3, which are defined according to the MICE standard environmental characterization system specified in ISO/IEC 11801-1