Cisco NCS 4000 Series Hardware Installation page 235

Installing Route Processor Cards, Fabric Cards, and Line Cards
OTU1 and OTU2 ports support generic forward error correction (GFEC). The card supports ODU2, ODU1,
ODU0, and ODUFlex switching functions by interconnecting with the centralized agnostic switch fabric.
Figure 112: 24-Port Low-Rate OTN LC Front Panel and LEDs
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2
12 Port LEDs are triangular in shape and point toward the port that they support.
Status LED
Attention LED
24-Port Low-Rate OTN Line Card
3 Port LEDs (one LED on each port)
Hardware Installation Guide for Cisco NCS 4000 Series
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