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Sintai Communication Co.,LTD.
Sintai Communication Co.,LTD.
Optical Transport Network Platform

Types of Optical Transport Network Platform

Advantages of Optical Transport Network Platform

  • 01
    Unified network control platform

    Provide unified network control for the whole series products with perfect network and equipment performance monitoring capability.

  • 02
    Flexible and comprehensive service access capability

    Supports 100M-100G any service access: CPRI1~10, eCPRI, FE/GE/10GE/25GE/40GE/100GE, FC 1G~32G, STM-N, OTU1/2/3/4, etc. The transparent transmission reduces the cross-transmission delay of the circuit.

  • 03
    Excellent frame structure design

    Support 1U, 2U, and 5U structures. In good compatibility with all functional boards. Support both WDM and OTN platforms.

Optical Transport Network Platform Glossary

  • A
    Optical Transport Network (OTN)

    A set of optical network elements connected by optical fiber links, able to provide functionality of transport, multiplexing, switching, management, supervision, and survivability of optical channels carrying client signals.

  • B
    Erbium-Doped Fiber Amplifier (EDFA)

    The most deployed fiber amplifier as its amplification window coincides with the third transmission window of silica-based optical fiber.

  • C
    Dense Wavelength-Division Multiplexing (DWDM)

    A technology that puts together multiplexed data signals from different sources so they can share a single optical fiber pair while maintaining complete separation of the data streams.

What is OTN:the Optical Transport Network

OTN (Optical Transport Network), it is a type of transport network that enables the transmission, multiplexing, routing and monitoring of service signals in the optical domain and ensures its performance index and survivability.

Optical Transport Network (OTN) technology is the product of a compromise between electrical networks and all-optical networks, transposing the powerful and well-established OAM&P concept and functions of SDH into WDM optical networks, effectively compensating for the shortcomings of existing WDM systems in terms of performance monitoring and maintenance management. OTN technology can support transparent transmission of customer signals, high-bandwidth multiplexing switching and configuration (minimum crossover granularity of ODU1, approx. 2.5 Gbit/s), strong overhead support, robust OAM functionality, multi-layer nested Tandem Connection Monitoring (TCM), and Forward Error Correction (FEC) support.

It meets the common model of transport networks as defined in ITU-T 6.805, following its hierarchical structure, information definition, customer relationship, network topology, functional definition, etc. The top-down hierarchy of the optical transport network is: circuit (customer) layer network, optical channel layer network, optical multiplex segment layer network, optical transport segment layer network and physical medium layer network.

Main advantages of OTN

As a new type of networking technology, OTN has the following main advantages over existing transmission networking technologies.

  • Multiple customer signal encapsulation and transparent transmission.

    The OTN frame structure based on ITU-TG.709 can support the mapping and transparent transmission of multiple customer signals, such as SDH, ATM, Ethernet, etc.

  • Large granular bandwidth multiplexing, crossover and configuration.

    OTN currently defines the bandwidth granularity of the electrical layer as the optical path data unit and the bandwidth granularity of the optical layer as the wavelength. The granularity of its multiplexing, crossover and configuration is obviously much larger, which has significantly improved the adaptation and transmission efficiency of high broadband data customer services.

  • Strong overhead and maintenance management capabilities.

    OTN provides similar overhead management capabilities as SDH, and the OTN frame structure of the OTN optical path layer greatly enhances the digital monitoring capabilities of the OCh layer. OTN also provides layer nested tandem connection monitoring (TCM) capabilities, which makes it possible to use end-to-end and multiple segments for simultaneous performance monitoring when OTN networking.

  • Enhanced networking and protection capabilities.

    The introduction of OTN frame structure, ODUk crossover and multi-dimensional reconfigurable optical multiplexer (ROADM) has greatly enhanced the networking capability of optical transport networks, changing the current status quo based on SDH VC-12/VC-4 scheduling bandwidth and WDM point-to-point provision of high-capacity transport bandwidth.

In a word, the optical transport network (OTN) architecture has great significance and the use of OTN systems also means a technological advancement of communication industry.

Application of OTN Platform

  • Long-distance network

    In long-haul networks, OTN equipment focuses on crossover capacity and can be used to build end-to-end OTN crossover networks by taking advantage of the fact that OTNs have the capacity for larger crossovers. Among them, inter-provincial 40G WDM system may need 10Tb/s crossover rate; intra-provincial long-distance network can be integrated with WDM system.

  • Metro area network

    In metro networks, there are three main usage scenarios.

    Building a brand new OTN network to carry IP services, containing between core routers and between BRAS to core routers.

    Integration with WDM systems where OTN optical network unit can provide county-to-city connectivity.

    OTN equipment focuses on service mapping aggregation and re-organisation.

  • OTN interfaces

    OTN interfaces will become increasingly common and contain advances in P-OTN; routers are likely to use channelize OTN to connect to the transport network.