Michael jamgochian, alcatellucent understanding optical transport network otn is key for success in addressing the emerging needs of next generation transport networks. As defined by the international telecommunication union itu, otn is a set of optical network elements connected by optical fiber links. The optical transport hierarchy oth is a new transport technology for the optical transport network otn developed by the itu. Application note flexible optical transport network otn.
The optical transport network market was valued at usd 23. Paul goransson, chuck black, in software defined networks, 2014. Looking for network architecture that will enable you to migrate from a circuitswitched transport network to a futureproof packetbased network. Optical transport network otn for high speed service. With the explosion of digital traffic and the evergrowing array of bandwidthhungry applications, otn optical transport network evolves from pointtopoint dwdm remedies to scalable and robust optical networking applications that cater to a wide variety of client signals with equallyvaried service requirements.
In future optical networks, optical packets will be transported in specific wavelength bands within a wavelength routed optical transport network. A practical vision for optical transport networks one that is widely deployable, highly reliable and maintainable, readily evolvable, and demonstrably cost effective is now at hand. They are based on optical technologies and components, and are used to route, groom, and restore wavelength levels and wavelengthbased services. Optical transport network otn fujitsu united states. Sep 11, 2014 this video describes what was the need for adopting otn optical transport network and the benifits. Optical transport network modernization solution cisco. Optical transport networking otn, as shown in the following figure, represents a natural next step in the evolution of transport networking. The physical layer of the optical transport network otn. They transmit bits using various encoding and multiplexing techniques. The network provides functionality of transport, multiplexing, routing, management, supervision, and survivability of optical channels carrying client signals. Sonetsdh standard was carry telephone speech, and it took many adaptations for the transport of frames and type of ip packets, atm, or others.
Optical transmitter and transport time r mark symbol 1 space symbol 0 optical t bit. Packet optical with cem is a great way to modernize, scale, trim opex and capital expenditures capex, and prepare your transport network for future growth. Otn is a digital wrapper that provides an efficient and globallyaccepted way to multiplex different services onto optical light paths. The optical transport network otn standards, defined by the itut g. The transmission over the optical networks takes place by transmitting the bits within. In this project we implement the otn framer, when our main goal is data. Optical transport network defined by the itu telecommunication standardization sector itut, otn is a set of optical network elements one that are connected by optical fiber links. This tutorial is divided into distinct chapters, which explains the structural features. Optical transport network architecture, pdf, print, email.
The successor of sonetsdh has been launched in early 2002 and standardized by itut as the otn optical transport network. Optical transport network architecture pdf download. In summary, optical transport networking has come of age. Otn as a set of various elements that are known as optical network elements, these elements are connected by optical fiber links, which enables to cater multiplexing, the functionality of transport, survivability of optical channels, which assist in carrying client signals, switching, signal management, and supervision. Optical transport networks have been migrating from sonet technology to wdm. Optical network drivers many factors are driving the need for optical networks. The optical transport network otn and wdm layers make up a generic layer1 transport network, enabling different service types to coexist and.
Its role is to channel packages on routes to 2,5, 10 and 40 gbits. Please increase the volume when you watch the last slide in the webinar because of improper. With the advancements in internet of things iot and machinetomachine m2m communications, a substantial amount of data is expected to be generated. Optical transport network an overview sciencedirect topics. Understanding optical transport network otn to cvtdallas. The report optical transport network market by technology wdm, dwdm, by components optical switch, optical packet platform, by services network design, network support, by end user, by regions worldwide market forecast and analysis 2014 2019 segments the global market into various subsegments with indepth analysis and forecasting of revenues. Pdf optical transport networks otn technology and test. The cisco network convergence system 4200 series delivers bestinclass circuit emulation, optical transport network, and carrier ethernet capabilities. Optical transport network otn technology represents both a technical leap forward in optical networking over sonetsdh and a business opportunity for carriers and service providers alike.
Jul 20, 2016 inspired by the sonetsdh network, itut itu telecommunication standardization sector has defined the optical transport network otn to achieve a more costeffective high speed network with the help of wdm technology. Here, it is not possible for the errors to be corrected by the dut. Otn optical transport network otn an otn network is composed of a set of optical nes connected by optical fiber links. Optical transport network otn flexible and efficient protocolagnostic transport defined in g. The otn layer evolved over layer1 of the dwdm network for enabling more efficient convergence of traditional sonetsdh transport and new data services, into a common optical transport network layer. Together, these fundamental principles form the basis for the notion of optical data networking. Typical functions include multiplexing, transport, switching, management, supervision, survivability etc.
Optical transport networks training tutorial course. Application note flexible optical transport network otn access up to 100g a transition is occurring in optical transport networking as network operators move from using otn solely as a digital wrapper for enhanced dense wavelength division multiplexing dwdm performance to using it as a switching mechanism for the next. Itut defines an optical transport network otn as a set of optical network. The optical transport network otn defined in itut g. Otn open transport network is a unique system that can integrate virtually all existing applications for voice, data, lan, video, scada, etc. Oct 25, 2017 for the love of physics walter lewin may 16, 2011 duration. Two generations of otn have already been widely deployed. Optical transport network otn is a series of standards created to combine the benefits of sonetsdh with the bandwidthexpanding capabilities of dense wave division multiplexing dwdm in order to build more network functionality into optical networks. Find out how optical transport network otn, a multi network protocol compatible with ethernet, helps you build video, mobile, internet, and storage services on a common server layer.
As we known, the core of most current operator networks is the asynchronous digital hierarchy synchronous optical network sdhsonet, which has always offered good fault management, performance monitoring, predictable latency, a protection mechanism and, of course, synchronization. Otn switching is added, organizations can stop using manual fiber connections for. A comprehensive survey akhilesh thyagaturu, anu mercian, michael p. Otn was designed to provide support for optical networking using wavelengthdivision multiplexing wdm unlike its predecessor sonetsdh itut recommendation g.
An additional interface type, which is not part of the g. Optical transport network architecture pdf this document provides a tutorial for optical transport network standards and their. Fiber capacity the first implementation of what has emerged as the optical network began on routes that were fiber limited. The otn product range is simple to install, configure and maintain. They are used for supporting various functionalities in order to maintain optical links carrying client optical signals. All in all, the charming of the otn can be translated into two words. White paper optical transport networks otn test by reza vaezghaemi, ph. Optical networks are telecommunications network of high capacity. Optical transport networks training otn training course. Optical transport network otn primer searchnetworking.
Figure 1, otn has been optimized to be the transport protocol to carry a converged mix of different types of client signals in a manner that efficiently uses the optical layer resources. From a highlevel architectural perspective, one would not expect otn architectures. Pdf roadmap on optical transport network technologies. A practical vision for optical transport networking. The cisco network transport modernization solution can be used to introduce greater network automation and the digitization of business. Optical transport networks are composed of a set of optical network elements connected by optical fibre links to provide functionality of transport, multiplexing, routing, management, supervision and survivability of optical channels carrying client signals. Otn interfaces difference between otu1,otu2,otu3,otu4. Optical fiber networks have high capacity can be used for providing the high bandwidth services even in wireless, infrared means high bandwidth connectivity.
This paper lays out this practical vision, placing it in context with other networking trends. Alan repech, system architect, cisco systems optical transport this book provides the most comprehensive coverage of both the theory and practice of optical networking. This white paper provides a tutorial overview of otn, with primary. The optical transport network otn architecture is specified in itut rec. Today, otn is being demanded by carriers worldwide as not just a pointtopoint technology but as an entirely new network layer to transition away from sonet. Cisco ngn transport solutions cisco global home page. It is based on the network architecture defined in itu g. The physical layer of the optical transport network otn is the weakest layer in the network, as anyone can access the. Although otn and sonetsdh have similarities, there are also some significant design differences. Sometimes, its also called the digital wrapper technology which provides an efficient and globally accepted way to multiplex different services onto optical. All the networks using optical fiber as transmission medium optical networks when transmitted signal remains in optical form till its arrival at destination all optical network.
A few of the most important reasons for migrating to the optical layer are described in this module. As of december 2009, otn has standardized the following line rates. Optical transport network otn is a protocol for sending network messaging over optical fiber networks. Generally speaking, otn is a network interface protocol put forward in itu g.
These nes are able to provide functions such as transport, multiplexing, routing, management, supervision, and protection survivability of client signals, according to the requirements specified in rec. In the transport core, bandwidth requirements spawned the creation of the optical transport network otn described in general terms in international telecommunications uniontelecom itut g. The optical transport network is designed to deliver a transparent framework to efficiently carry diverse traffic types, which can decrease acpexopex in networks and at the same time address dramatic shifts in traffic types. Optical transport network market global industry analysis. What is otn optical transport network computer notes. The tcm active act field is reserved for future use to activatedeactivate tcm channels. An optical transport network otn is an interconnection of optical switches and optical fiber links. While no text can be truly stateoftheart in the fast moving area of optical networking, this one comes as close as possible. Experts define otn as a collection of optical network elements one that communicate using wavelength division multiplexing wdm.
In 2012, half a zettabyte will cross the global network impact on the network. Carriers are also placing particular emphasis on otn in the metro area, where. Otn optical transport network consists of various optical network elements connected by optical fiber lines. Cisco visual networking indexforecast, 20072012 mobile data to grow at 125% cagr 20072012 with video, consumer ip quadruples by 2012 requirements. Optical transport networ tutorial by guylain barlow white paper introduction the amount of data traffic relative to voice traffic on optical networks and the total traffic volume continues to increase. The optical transport network otn, as the underlying infrastructure network of networks should be capable of transporting a wide variety of client signals, independent of their format. Fronthaul network solutions for the cran architecture 5g fronthaul network changes and wdm otn bearer solution unified backhaul of fixedmobile convergence and otn bearer solution sdnbased optical networks effectively support the slicing and intelligent operation of 5g networks otn key technologies in 5g bearer network summary appendix 01 02. Otn is an industrystandard optical transport protocol itu g. This standard defines a hierarchy among optical network elements and provides for performance management of complex dense wavelength division multiplexing dwdm networks. Introduction with an ever rising demand for traffic over the internet, telecommunication providers are struggling to develop new ways to deal with it. The optical signal leaves the optical transmitter at full strength but as it travels many kilometers down the fiber, it falls victim to the absorption, dispersion, distortion and scattering effects. Optical transport networks training by tonex provides a comprehensive technical introduction to optical transport networks. Optical transport network market growth, trends, and. Architecture of optical transport networks in force prepublished superseded and withdrawn components.
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