The Bright Prospects of Raytrans SDH

Raytrans SDH has seen tremendous development in both the WAN and private network fields. Telecom operators such as China Telecom, China Unicom, and China Radio & Television have all deployed large-scale SDH-based backbone optical transmission networks. [Raytrans](
For organizations that have a more urgent need for networking but are unable to set up dedicated SDH rings, many have opted to lease circuits from telecom operators. Due to SDH's physical-layer characteristics, organizations can carry various services over leased circuits without transmission constraints. There are multiple ways to carry services, including using TDM-based integrated service multiplexing equipment to multiplex multiple services, or using IP-based equipment for packet switching of multiple services. SDH technology can truly guarantee bandwidth on leased circuits and offers superior security compared to VPN and other methods. SDH leased lines have been widely adopted in government agencies and enterprises that place a high priority on security. Generally speaking, SDH can provide interfaces such as E1, STM-1, STM-4, and STM-16, fully meeting various bandwidth requirements. At the same time, the pricing has become acceptable to most organizations.

In summary, SDH has become the mainstream of transmission network development due to its obvious advantages. Combined with advanced technologies such as optical wavelength division multiplexing (WDM) and ATM, SDH networks are playing an increasingly important role. SDH has been included in high-speed communication network application projects for the 21st century by many countries, and is recognized by the telecommunications industry as the development direction of digital transmission networks, with vast commercial prospects.