◆Optical Transport Network (OTN) is a new optical transport technology system defined by ITU-T G.872, G.798, G.709, etc., which includes the complete architecture of optical and electrical layers. There are corresponding management monitoring mechanisms and network survivability mechanisms for all levels of networks. The OTN idea is derived from the SDH/SONET technology system (such as mapping, multiplexing, cross-connect, embedded overhead, protection, FEC, etc.), and the operational and manageability of SDH/SONET is applied to the WDM system, and the SDH is also available. /SONET Flexible and reliable and WDM capacity advantages.
◆ In addition to further enhancing support for SONET/SDH operation, management, maintenance and provisioning (OAM&P) functions in DWDM networks, the OTN core protocol ITU G.709 protocol (based on ITU G.872) defines the following three aspects. : First, it defines the OTN optical transmission system; secondly, it defines the OTN overhead function to support multi-wavelength optical networks; and third, it defines the frame structure, bit rate, and format of the OTN used to map the client signals. .
◆ The OTN technology is based on the existing optoelectronic technology in the context of the immature of some key technologies (such as optical buffering, optical timing regeneration, optical digital performance monitoring, wavelength conversion, etc.) of current all-optical networking. technology. OTN performs all-optical processing on the sub-network through the ROADM and opto-electric hybrid processing through the electrical cross-connect matrix on the sub-network boundary. However, the target is still the all-optical networking. It can also be considered that the current OTN phase is the transition phase of the all-optical network.
HUAWEI OSN 6800 has the ability of converging, transmitting and crossing, supporting two layers of dynamic traffic guidance structure (optical cross connection, ODU cross connection), integrating the GMPLS intelligent control plane, and having the advantage of large capacity and long distance transmission of WDM. The platform adopts advanced technologies such as ROADM, dimmable optical module, ASON/GMPLS, 40G, 100G and so on. The platform is very flexible.
Huawei Optix Osn6800 Optical Transmission System Huawei Sdh Product Characteristics
The platform adopts the ITU-T standard digital encapsulation protocol, which can transparently access various protocols such as IP/Ethernet, ATM, SDH, ESCON and other rates, such as 16Mbps, 5Gbps, 10Gbps, 40Gbps and so on.
Multi service transmission:
Using multi protocol wavelength technology, the system can transmit different types of services (voice, data, storage and video), which is more consistent with the development trend of TDM to Ethernet / data services.
It can provide dynamic optical cross connect (multidimensional ROADM), flexible Any ADM and two level data processing and other traffic scheduling mechanisms.
Easy to manage:
Capable of running, manageable, maintainable and configurable (OAM&P), with bandwidth management, converging, end to end detection and other business management capabilities.
Intelligent optical network:
The traditional WDM is statically configured by the maintenance personnel through the