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G.709 optical transport network (otn), Overview – EXFO IQS-8100 Series Transport Blazer for IQS-600 User Manual

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Glossary

SONET/SDH Application

601

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:

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Optical Transport Section (OTS)

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Optical Multiplex Section (OMS)

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Optical Channel (OCh)

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Optical Transport Unit (OTU)

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Optical Data Unit (ODU)

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Optical Channel Payload Unit (OPU)