Reach beyond 2400 km over legacy DWDM infrastructure under following conditions:No change to existing line equipment, e.g., no extra amplification required0Use current in-line DCMs

Same CD/PMD tolerance as current 10GTransmission with mixed traffic 100G traffic (100GE and/or OTU4)Reach beyond 2400 km over SMF without inline chromatic dispersion compensationSupport Flex Grid channel spacing at 12.5 and 50 GHz

Supports Absolute (Non-Diff) or Differential Phase Encoding/DecodingForward Error Correction
Low latency Soft-Decision Forward Error Correction (SD-FEC) without post-FEC error floorSupports backward compatibility to 15% Everest Mode for DP-DQPSK ModulationSupports backward compatibility to 15% Denali Mode for Non-Diff ApplicationsSupports Hard Decision Staircase EFEC 7%,9.4dB NCG0Supports Hard Decision G.709 GFEC 7%,62 dB NCG0
Staircase FEC or GFEC supports Interoperability for DP-DQPSK ModeNetwork/Line OTU4 or ODUJ Processing

Differential Mode
OTU4 GFEC or Staircase DP-DOPSK interoperability using OTL4.4 Signaling- Semi-Transparent Mode
15% SD-FEC Everest Mode for OTU4 signaling with DP-DQPSK modulationNon-DifferentialMode
15%SD-FEC ODUJ backward compatible with Denali for DP-QPSKNetwork/Line Framed PRBS Generator and Checker: PRBS 7,15,23, and 31