• The KIPS Transactions:PartA
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• v.10A no.6
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• pp.749-756
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• 2003

Currently, The Internet has been imported in many fields and it's development prompted accordingly. The field of education also has been developed as 'Learners Centered Environment' by combining the existing educational method, so called distance learning, with internet. Learners have become able to adopt the appropriate level of educational service anywhere and anytime they want. In this paper, we propose a EOD system based on SIP. The EOD system is a new conferencing type system in the distance learning field. Using SIP (Session Initial Protocol) for EOD system is more efficient than using H.323, also the more the number of its is increased, and as improvement of its QoS. The EOD system is scalable and provides conferencing service using SIP which suits with web environment. And, the EOD system supports multicast efficiently to utilize bandwidth of networks.