Interfaces for the Optical Transport Network (OTN) and Automatically Switched Optical Networks

5 Day Course
Code PWL045

Book Now - 2 Delivery Methods Available:

Classroom Virtual Classroom Private Group - Virtual Self-Paced Online


This course provides an in-depth introduction to the terminology and technology that will comprise tomorrow's Optical Transport Networks. It is aimed at personnel associated with the telecommunications industry, who would like a good understanding of the technology involved and who require a SDH/SONET and DWDM refresher.


By the end of this course, delegates will be able to:

  • Understand  the demand for OTN bandwidth
  • Describe the problems associated with old technologies
  • Describe current SDH/Sonet and DWDM transmission techniques
  • Identify the purpose of new technologies
  • Describe the functionality of the various transmission mediums available
  • Describe the various techniques that can be deployed in the marketplace
  • Identify the various types of network that are currently available
  • Identify the features and functionality of OTN Systems
  • Define the issues involved in equipment and application rollout
  • Define the Definitions and Terminology for Automatically Switched Optical Networks (ASON)
  • Describe the Requirements for the Automatic Switched Transport Network (ASTN)
  • Identify the Architecture for the Automatic Switched Optical Network (ASON)
  • Understand the basics of Multi Protocol Label Switching (MPLS)


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Scope (3 topics)

  • References
  • Terms and definitions
  • Abbreviations and Conventions

Optical transport network interface structure

Multiplexing/mapping principles and bit rates

Optical Transport Module (4 topics)

  • OTM-n.m
  • OTM-nr.m
  • OTM-0.m
  • OTN 0.mvn

Physical Specification of the ONNI

Optical Channel (OCh)

Optical Channel Transport Unit (OTU)

Optical Channel Data Unit (ODU)

Optical Channel Payload Unit (OPU)

OTM Overhead Signal (OOS)

Overhead Description

Maintenance Signals

Mapping of Client Signals


Mapping ODUk Signals into the ODTUjk Signal

Forward Error Correction using 16-byte Interleaved RS (255,239) Codecs

ODUk Tandem Connection Monitoring (TCM) Overhead

OPUk Multiplex Overhead

Amendment 2 Including: (10 topics)

  • Basic signal structure
  • ODTU12, ODTU13, ODTU23
  • OPUk Multiplex Overhead
  • OPUk Multiplex Structure Identifier (MSI)
  • OPU2 Multiplex Structure Identifier (MSI)
  • OPU3 Multiplex Structure Identifier (MSI)
  • OPUk Payload Structure Identifier Reserved overhead (RES)
  • ODU1 into ODU2 multiplexing
  • ODU2 into ODU3 multiplexing
  • ODU1 into ODU3 multiplexing

Amendment 3 Including: (4 topics)

  • ODU0 and ODUFlex
  • ODU2e
  • OTU4
  • Multi-lane OTU3 and OTU4 interfaces

Implementers Guide Including Replacement Terms

Differing Vendor's Equipments and their Implementations

Individual and Group Planning Exercises (6 topics)

  • Upgrading a legacy SDH network to be OTN.0.m compliant
  • Upgrading a legacy 16 channel DWDM network to be compliant
  • Implementing a new network to be OTN.n.m compliant
  • Implementing variants of the OTN.mvn Optical Transport Lanes
  • Paperwork confirmation exercises on abbreviations used
  • End of course assessment

ASON/ASTN (3 topics)

  • G.8081/Y.1353 Definitions and Terminology for Automatically Switched Optical Networks (ASON)
  • G.807/Y.1302 Requirements for the Automatic Switched Transport Network (ASTN)
  • G.8080/Y.1304 Architecture for the Automatic Switched Optical Network (ASON)

MPLS (2 topics)

  • Describe the switching process of MPLS, the method to allocate and control the label.
  • Understand the basic concept of MPLS, including the MPLS label, MPLS switching and MPLS label allocating.


Grounding in SDH/SONET or DWDM systems.

Scheduled Dates

Please select from the dates below to make an enquiry or booking.


Different pricing structures are available including special offers. These include early bird, late availability, multi-place, corporate volume and self-funding rates. Please arrange a discussion with a training advisor to discover your most cost effective option.

Code Location Duration Price May Jun Jul Aug Sep Oct
Virtual Classroom (Bangalore)
5 Days $4,225
Virtual Classroom (Dubai)
5 Days $4,225
Virtual Classroom (London)
5 Days $4,225
Virtual Classroom (Reston, VA)
5 Days $4,225
Virtual Classroom (Singapore)
5 Days $4,225

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

Solutions Engineer, Akamai

Excellent course, very clear and well organised. Course content delivery was very good.”

Assistant Engineer, Dhiraagu

Very informative and appropriate.”

Network Support Technician, BT

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