Summary

Recommendation ITU-T G.798 specifies both the components and the methodology that should be used in order to specify the optical transport network (OTN) functionality of network elements; it does not specify individual optical transport network equipment.

Edition 6.0 of this Recommendation includes the text of Amendments 1, 2 and 3, as well as Corrigendum 1 to Edition 5.0 of this Recommendation, addition of Beyond 100 Gbit/s OTU and ODU functions and optical layer terminology updates. Edition 6.0 furthermore deleted the ODU virtual concatenation functions and the ODUkP to ATM adaptation function and removed the processing of the TCM ACT and FTFL overhead bytes.

Corrigendum 1 to ITU-T G.798 (2017) contains text modifications and additions:

–           for consistent naming of the OMS‑O to OTSiG‑O and OCh‑O adaptation functions,

–           to correct the TSI processing in the OTSiG‑O_TT_So function,

–           to align with ITU‑T G.872.