What is OLT?

The full name of OLT is Optical Line Terminal, optical line terminal. OLT is an optical line terminal, which is a central office equipment of telecommunications. It is used to connect optical fiber trunk lines. It functions as a switch or router in a traditional communication network. It is a device for the entrance of the external network and the entrance and exit of the internal network. Placed at the central office, the most important executive functions are traffic scheduling, buffer control, and providing user-oriented passive optical network interfaces and allocating bandwidth. To put it simply, two functions are implemented. For the upstream, the upstream access of the PON network is completed; for the downstream, the acquired data is sent and distributed to all ONU user terminal devices through the ODN network.

OLT is an optical line terminal, which is an OLT network management system based on FLEX+TCL and is used to connect the terminal equipment of optical fiber trunk lines. Based on the theoretical system of EPON system, OLT understands its working principle, analyzes China Telecom's business requirements for optical line terminals, distinguishes main functional modules, and discusses the functions of each part of the EPON system.

Secondly, based on the test requirements of China Telecom's optical line terminal equipment, OLT designs the hardware structure of the optical line terminal system with reference to the existing OLT system, completes the logical mapping of network services to equipment modules, and gives the implementation method of specific function modules. .