도시철도 정보통신망에 ALL IP기반 Network 적용 방안 연구

This paper suggests application of broadband Gigabit Ethernet network to railway telecommunication networks, Several data transmission schemes such as VPLS(Virtual Private LAN Service), VC(Virtual Chassis) and CTP(Circuit to Packet) are examined to realize the reliability, security and QoS of the Gigabit Ethernet network equal to those of the conventional PDH and SDH networks, By applying these elaborated data transmission skills to the Gigabit Ethernet network, it is provided the optimal structure of integrated urban transit telecommunication networks based on ALL IP networks which will reduce initial construction costs, facilitate maintenance and meet ever-increasing multimedia data transmission demand.