Summary

Recommendation ITU-T G.8201 defines error performance parameters and objectives for international optical channel data unit-k (ODUk) paths transported by the optical transport network (OTN), as described in Recommendation ITU‑T G.709/Y.1331. While this Recommendation specifically addresses objectives for international ODUk paths, the allocation principles can be applied to the design of error performance for national or private ODUk paths. This Recommendation is based upon a block‑based measurement concept using error detection code (EDC) and EDC usage inherent to the path under test; the block repetition rate being in accordance with OTN technology in accordance with Recommendation ITU-T G.709/Y.1331. This simplifies in‑service measurements. The events, parameters and objectives are defined accordingly. In addition to path performance assessment, tandem connection monitoring is covered.

Corrigendum 1 to Recommendation ITU-T G.8201 (2011) removes the contribution of the incoming alignment error (IAE) and payload label mismatch (PLM) defects to ODUk tandem connection and ODUkP path termination near-end severely errored second in alignment with the specification of the near-end defect second performance variable in Recommendation ITU-T G.798.

Amendment 1 adds ODU0, ODU2e, ODU4 and ODUflex to the list of ODUk types in footnote 1.