Regional Education Private Network Fiber High-Bandwidth Transmission System
China currently places great emphasis on education informatization construction, and Class-to-Class and School-to-School connectivity have been under construction for some time. The distance education function of School-to-School connectivity can narrow the gap in education quality between urban and rural areas. It is an effective means of using information technology to improve the quality of primary and secondary education across the province, especially in remote areas, and is conducive to sharing education resources, exchanging information, training teachers, and improving teaching standards.
The School-to-School metropolitan area network and education backbone network involve the construction of wide area networks. For the construction of education metropolitan area networks and education backbone networks, wide area interconnection can adopt gateway devices such as routers and Layer 3 switches to implement star topology networking, some even use RPR technology for ring topology networking, or use transmission equipment or WDM equipment for ring topology networking. These devices are expensive and difficult to maintain, have limited functions, and place high demands on communication personnel, which hinders the performance of the education network.
This article proposes the establishment of a comprehensive regional education private network communication system that can simultaneously address schools' external network (Internet), internal networks (including examination resource network, synchronized teaching network, video conference network, surveillance network, etc.), telephone switching network, all-in-one card IoT network, and more.
Since the education private network carries a large amount of video transmission content and requires relatively high transmission bandwidth, the primary approach should be to lease dark fiber from operators such as China Unicom, China Mobile, China Telecom, and China Radio and Television. Where conditions are not available, STM-1 channels should be leased, or microwave STM-1 channels should be used. These channels can be divided into multiple physically isolated Ethernet channels. For example, content transmitted on the examination network requires a high level of confidentiality. Other networks such as the synchronized teaching network require high transmission quality. Running all-in-one card information on an independent private network can better ensure information security. Therefore, several independent physically isolated networks are needed to ensure the information security of the education private network, especially in cases where there are no dedicated communication technical personnel.
For Internet information provided by schools to the outside, all schools can be centralized at the Education Bureau to use external network interfaces. This not only allows unified access to broadband operators as a major customer, but also enables periodic adjustment of individual access bandwidth based on operator bandwidth pricing. Simultaneous access to multiple operators can also prevent the risk of a sudden traffic reduction on any single operator's network. At the same time, a unified external network egress allows centralized funding to purchase more advanced routers, firewalls, etc., enhancing bandwidth throughput performance and improving system security. Centralizing the external access equipment room at the Education Bureau also facilitates access to the higher-level education private network, enhances the rational utilization of provincial education resources, and allows the centralized purchase of advanced education resources as a major customer for use by all schools.
The education private network can not only transmit various network information, but also aggregate telephone information from all schools to the Education Bureau, which can be connected to operators as a major customer, typically accessing two operators for mutual backup. This gives schools the initiative in telephone access resources, making installation more convenient, while also integrating other communication resources such as wireless trunking for routine management supervision and remote examination supervision and command.
Currently, Raytrans can provide integrated service transmission over 5GE and 2.5G bandwidth dark fiber, and provide 622M and 155M bandwidth information transmission over SDH channels (wired or microwave). It can simultaneously provide multiple physically isolated Ethernet channels, E1 channels, telephone channels, and low-latency high-definition image signals.
It not only facilitates inter-school information transmission, but also enables convenient access to various information at application sites within the school via fiber. A school-level communication dispatch center can also be built within the school.
The inter-school networking structure is as follows:
The intra-school networking structure is as follows:
