 |
| |
| SDH |
SDH is the abbreviation of Synchronous Digital Hierarchy. The SDH transmission network consists of some SDH network units, and transmits data synchronously on optical fiber, microwave or satellite. By integrating the functions of multiplex, transmission and exchange, it is a comprehensive information network under the universal network management operation. SDH technology is becoming a focus of communication technology development and application, since it is capable of effective network management, dynamic network maintenance, and monitoring business performance, and can improve the rate of exploiting network resources and meet the requirement on the information transmission and exchange of data communication network and represents a qualitative improvement in improving data communication quality.
SDH transmission network is featured with transparency in transmitting information, and can be interconnected directly to different operators. Various transmission mediums such as optical fiber and digital microwave can be directly linked, displaying a powerful compatibility in setting up networks. With its fast response time, extremely low network time delay and large quantities network accesses, SDH technology has become the main interconnection choice for companies currently. |
SDH services: |
 |
WAN interconnection |
|
High efficient data transfer |
|
High quality video conference |
|
IP service interconnection |
|
Remote monitoring |
|
Features of SDH technology : |
|
SDH has strong network management abilities and can meet multiple requirements of warning, performance monitoring, network configuration, switch and public affairs etc. |
|
It has strong self-restoration ability. With functions of intelligent checking SDH network management system and network dynamic configuration function, SDH network can achieve self restoration, i.e., when there are faults with equipment and systems, it can restore service quickly to improve network reliability. |
|
SDH standardizes the network access and points so that equipment of different manufacturers can be well compatible on the same network. |
|
SDH supports Asynchronous Transfer Mode (ATM), making it possible to upgrade to broadband comprehensive information network. |
|
SDH transmission network enjoys transparency in information transmission. |
|
|
