The Aries fgOTN processor family is engineered according to the ITU-T G.709.20 fgOTN standard. This line of processors handles a variety of signals, including E1/T1, FE/GE, and STM1/STM4, effectively monitoring and managing alarms and performance metrics. Aries processors excel at fine-grain traffic aggregation, efficiently channeling fgODUflex traffic across OTN lines to support Ethernet, SDH, PDH client services. Their capacity to map signals to fgODUflex containers, which are then multiplexed into higher order OTN signals, demonstrates their versatility and efficiency. By allowing cascaded configurations with other Aries devices or Apodis processors, Aries products optimize traffic routes through OTN infrastructures, positioning them as essential components in optical networking and next-generation access scenarios.