The present invention is a multifunctional campus network language training system for creating an English training atmosphere, and more specifically, a complex connection line between a composite modem connected to a main PC for instructional school and a slave PC of the composite modem by using RF communication and wireless Ethernet communication. It is possible to send and receive textbooks for English training without any problem, and to supplement the problems of RF communication with wireless Ethernet communication and the difficulties of wireless Ethernet communication with RF communication. Whether it is difficult to use wireless communication itself or wireless Ethernet communication, it is configured to use wired Ethernet. If it is difficult to use wired ethernet, it is possible to use the telephone line or speaker line closest to any installation site of the Slave PC of the composite modem to use for communication for the purpose of the present invention. Comprising the RF module, wired, wireless Ethernet module and MLC module in the composite modem and the slave PC of the composite modem connected to the main PC to solve the communication failure problem for receiving;;The Slave PC of the complex modem installed in any place outside the building can use solar power, saving energy and providing language training that is limited to English-only classrooms and operated by the instructor. To be able to repeat English training anywhere and anytime in everyday school life;;By configuring the wireless LAN card in the Slave PC of the compound modem, download the textbooks to the students' portable terminals from the Slave PC of the compound modem, and repeat the training anytime and anywhere outside the school using the Visual Program configured in the present invention. It is characteristic to maximize the atmosphere of English training.;Main PC, Complex Modem, Slave PC of Complex Modem, RF Module, Wireless, Wireless Ethernet Module, MLC Module, Visual Program, Wireless LAN Card, Portable Terminal
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