Design and Implementation of SIP-based Multi-party Conference System Including Presence Service

Presence 서비스를 포함한 SIP 기반의 다자간 컨퍼런스 시스템의 설계 및 구현

  • 정영면 (금오공과대학교 컴퓨터공학과) ;
  • 고세령 (금오공과대학교 컴퓨터공학과) ;
  • 장춘서 (금오공과대학교 컴퓨터공학과) ;
  • 조현규 (금오공과대학교 컴퓨터공학과)
  • Published : 2005.04.01

Abstract

As developing of the internet and computer technology, more interests are gathered to the conference service which provides capability of multi-party real-time visual conference. In this paper, we have designed and implemented a SIP-based visual conference system which includes Presence service. The elements of this conference system are user system, which has conference UA(User Agent) capability, presence seuer and conference server. For the presence service, we have adapted publication method which uses SIP PUBLISH message, and with this service various status informations of users are easily acquired. Also invitations and involvements to the conference are easily made through this service. For the conference server which controls establishment and management of multi-party connections, we have included conference event package. This package provides dynamically changing conference informations and users informations through SIP subscription and notification functions.

Keywords

SIP;Publication;Presence Service;Conference System;Conference Event Package