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Optical Transport Network - OTN


Optical Transport Network (OTN)

OTN (Optical Transport Network) with the recent updates to the ITU-T G.709 standard is quickly becoming the preferred transport technology for telecom operators across many facets of their network. OTN encompasses many enhancements over the traditional SDH or SONET networks such as “Optimized transport of legacy and future technologies” and “Greater alarming and management of the network”, for these reasons alone it’s the natural progression path for telecom operators. Anritsu is committed to OTN as a technology and has been actively involved with it for many years, please return to this page for future updates and reference material related to OTN.

OTN Reference Poster


The A1 OTN reference poster provides all the data required by the next generation of fixed line (OTN) engineers in a single location. The comprehensive data provided by this poster will allow any engineer to quickly understand the many facets of OTN.

OTN Poster

OTN Poster


Key details include:

  • OTU Frame diagram
  • Detailed explanation of the all section of the OTU Frame
  • Interface rates broken-down to payload rates including example payloads
  • Mapping structure
  • Maintenance Signal Network Interaction
  • TCMi operation details
  • Understanding accurate BER Testing via the ITU-T O.182 standard (see below whitepaper for more details)
  • Complete glossary of acronyms and payload descriptions

White Paper 1 - OTN What is it and why is it important?


The first white paper aimed at a basic level explains the background of SDH/SONET and the move towards P-OTS and OTN. This incudes a brief introduction to OTN with overviews of existing technologies and market trends. Includes:

  • Benefits of P-OTS
  • Concerns about about P-OTS
  • The solution
  • Overview of different technologies

Download this White Paper for full details.


White Paper 2 - OTN What is it and How does it Work?


Aimed at the Engineer level this 16 page white paper follows on from the first white paper to provide more in depth information including a detailed OTN technology overview. Detailing OTU, ODU, OPU and FEC this paper also explains Mapping and provides an overview of the recent improvements in transmission technologies.

  • Technology overview
  • The OTN frame
  • Mapping
  • Benefits of OTN

Download this White Paper for full details.


Anritsu OTN equipment - Anritsu has several testers which support OTN including;

  • MD1260A - 40/100G Ethernet Analyzer
  • MP1595A - 40G SDH/SONET Analyzer
  • MP1590B - Network Performance Tester
  • CMA5000a - With the Universal Transport Analysis (UTA) Module
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