EXFO FTB-800 Series for FTB-1 - Manual (Page 555)

Glossary
NetBlazer 545
G.709 Optical Transport Network (OTN)
G.709 Optical Transport Network (OTN)
Overview
The optical transport network (OTN) combines the benefits of SONET/SDH
technology with the bandwidth expansion capabilities offered by dense
wavelength-division multiplexing (DWDM) technology.
The OTN consists of the following layers:

Optical Transport Section (OTS)

Optical Multiplex Section (OMS)

Optical Channel (OCh)

Optical channel Transport Lane (OTL)

Optical Transport Unit (OTU)

Optical Data Unit (ODU)

Optical Channel Payload Unit (OPU)