Labels:text | diagram | screenshot | circle | font OCR: TWD-FIBER BIDIRECTIONAL LINE-SWITCHED RING Node A Active STSŞ Fiber #1: Stardoy STSS Node F Node B Fiber #2 STS-1 STS-1 Node E Node G Node D Figure 1. Note that each fiber in the two-fiber bidirectional line-switched ring carries both active ( working) and standby (protection) STSs. Standby STSs may contain low-priority services which would be preempted during "self-healing" recovery situations.
