history of transmission

OTN Fundamental-1

OTN, everybody now talking OTN, instead of CWDM/DWDM, what exactly OTN was, here we collect some document and information, to show you some basic fundamental about OTN.

History of transport network

history of transmission

ITU-T OTN Definition

Firstly What is OTN?

  • OTN is an industry-standard optical transport protocol
  ITU G.872 “Architecture for the Optical Transport Network (OTN)” (Oct 2001)
 Further refined in ITU-T G.709 (Jan 2003, Amendment 3 Oct 2009) and ITU-T G.798 (May 2002, xxxx Jun 2010)
 
  •  OTN is intended to promote network evolution beyond SONET/SDH

Eliminates traditional TDM transport complexity and related costs

Removes the gaps/bottlenecks specific to emergent packet and wavelength transport

 
  •  OTN offers tremendous CAPEX/OPEX benefits to carriers

 Reducing CAPEX via common transport framework

Lowers cost-per-bit via technology simplification and transport commonality

Integrates physical and optical layer processing across Network Elements (NEs)

Consequently reduces the number of NEs across the network.

 

Reducing OPEX through network simplification and integration

Less equipment = less Operations Administration and Operations, Administration, Provisioning (OAM&P)

Technology offers simplified fault isolation and improved trouble-shooting.

 

How Does OTN Technology Benefit Today’s Carriers?

  • COMMONALITY – via wavelength-based optical transport

Payload equivalency for SONET/SDH, Ethernet, and/or DWDM transport

Common network management platform support

Permits ‘endpoint-only’ management by avoiding termination at every midpoint.

 

  • TRANSPARENCY – across the optical domain

Integrates physical and optical layers for seamless networking

Promotes integration across disparate networks via common transport framework

 

  • EFFICIENCY – for overall cost reduction and network monetization

Simplified multiplexing/demultiplexing of sub-rate traffic

Reduction in signal overhead requirements relative to payload.

 

  • EVOLUTION – to emerging technologies

Provides simple transition to 40G and 100G transmission speeds

Purpose-built for Packet Optical and Wavelength-based transport

Integrated, standardized Forward Error Correction (FEC) for extended optical reach

Ideal for comprehensive Control-Plane network implementation.

 

How Does OTN Technology Expand Carrier Applications?

  • Optical Wavelength Services:

 Offers customers full end-to-end transparency

Protocol-independent transmission of SONET/SDH, Ethernet, IP, and/or Lambdas

Simplifies end-customer network management

Ideal for Carrier’s carrier applications, wholesale bandwidth services, etc.

 

  •  Differentiated Services:

  New Service Level Agreement (SLA) options

-Via OTN Control-Plane mesh

New Integrated multi-domain operations

– E.g. Multi-Region networking to integrate Physical, Transport, and Data layers under a common network management model for customer control

Bandwidth on Demand Services

-Fast provisioning via end to end OTN

 

–To be continued..

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