A radio and television EPON two-way network reform project in Guangxi
A city is a prefecture-level city subordinate to the Guangxi Autonomous Region. In 2009, it began the two-way transformation of the nationwide radio and television system. The project uses EPON+EOC and EPON+LAN technology. The goal is to provide broadband services and interactive TV services for users in the main urban area.
Changguang Technology has become the exclusive supplier of the EPON part of the project with its meticulous and comprehensive solutions, outstanding product performance and original after-sales service commitments.
Nine front-end rooms are built in the main urban area. Based on the user density and distribution of network nodes, we recommend that the bureau select a large-capacity, carrier-class rack-mounted OLT device, the C8000. This type of device is characterized by excellent performance, stability, reliability, and a single full capacity. Up to 40 PON ports, and can provide 1+1 main control board protection, power supply and fan protection. It is very suitable for the dense business deployment of the city.
According to the deployment position of ONU and taking into account the local weather characteristics of Liuzhou (high temperature, humidity, and rainy weather in summer), we recommend that users select the field-type ONU M3-0400PF at long-term direct sunlight, using an industrial-grade switching chip and Industrial-grade optical modules can withstand a temperature range of -40°C to 85°C. The power module is a project-grade power supply that can achieve 6KV lightning protection. The user-side interface is also protected against lightning. The indoor ONUs are used at other deployment points. M3-0400P. In order to achieve the best value for money in the entire network.
In the service deployment scheme, since the EOC terminal provides only one user interface in the EPON+EOC construction mode, the EPON+LAN configuration mode can also provide only one user interface for the five types of homes. To solve the problem of identifying different services, we The recommended user adopts a flexible QinQ scheme:
On the access side (EOC terminal, corridor switch), the same VLAN TAG is marked for different services of the same user; ONU and EOC headends are transparently transmitted.
On the PON port of the OLT, the service type is identified through Ethernet protocol type matching (broadband service: PPPoE) and source MAC fuzzy matching, and different outer VLAN TAGs are marked for different services. The inner VLAN tag is used to identify the user's geographical location. The outer VLAN tag is used to identify the service type and the user's large area.
The technical scheme of the project is complex, and the construction of the project is difficult. Changguang Technology dispatches the elite troops to ensure the construction quality. The company continuously communicates with customers during the implementation of the project and optimizes the configuration scheme. The final successful one-time acceptance by users, has won the praise of users, and provided a strong guarantee for the smooth opening of Broadband's broadband business and interactive TV business.