id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_ua5m2mwohbhthj6puoff5liadm	Yujiao Wang	A Design and Implementation of SIP-Based Distance Education System	2011	5	.pdf	application/pdf	2309	191	55	A Design and Implementation of SIP-Based Distance Education System SIP would create, control and terminate sessions through request messages (from client to server); When creating or terminating a multimedia communication session, SIP mainly provides functions in 3. SIP-based Modern Distance Education System Classroom management system is the soul of the entire SIP distance education system, which provides Before a teacher starts a class, classroom control server will send related information concerning the agent is an intermediary for realizing communication between Focus and classroom management server. It major function is to realize the interaction between classroom management server and Focus, as well as server has received the request from classroom attendances, web-based classroom management and class Classroom control system is the main body of the entire SIP distance education system. Classroom control system is mainly comprised by three functional modules, including Focus, SIP create and maintain SIP sessions between teachers and students in the classroom.	./cache/work_ua5m2mwohbhthj6puoff5liadm.pdf	./txt/work_ua5m2mwohbhthj6puoff5liadm.txt