MS-OTN Systems
In recent years, transport networks have been facing new challenges, such as, larger network bandwidth, better performance of transmission pipes (low latency and packet loss ratio), and lower costs. In line up with the development trend of transport networks, the multi-service optical transport network (MS-OTN) architecture was designed, which integrates OTN, TDM, and packet (PKT) technologies. In the MS-OTN architecture, Layer 0 (L0), Layer 1 (L1), and Layer 2 (L2) collaborate with each other to meet bandwidth, quality, and cost requirements. As such, the MS-OTN architecture is ideal for future-proof transport networks.
MS-OTN devices are new-generation OTN products since the development of NG WDM products. The iconic feature of MS-OTN devices is the capability to support MultiProtocol Label Switching Transport Profile (MPLS-TP). In other words, only the OTN devices that support MPLS-TP and packet switching are called MS-OTN devices.
- Multi-service transmission: MS-OTN devices can receive and transmit any services, such as SDH, SONET, PDH, ETH, FC, SDI, PON, SAN, and CPRI.
- Unified grooming: As the MS-OTN devices have integrated with L0, L1, and L2 technologies, they can provide unified grooming of services on the wavelength, packet, ODU, and VC levels.
In NG WDM/OTN systems, only a few boards support L2 switching, so services have to be mapped into ODUk signals for grooming. However, MS-OTN systems support system-level packet switching, capable of offering more flexible service grooming.
- Uniform transport: Various services can be mapped into the best matched channels and freely aggregated into wavelengths for uniform transport.
- Centralized maintenance: The same network management system (NMS) is used to visually operate and maintain L0, L1, and L2.
