Implementation and Performance Evaluation of B-ISDN Protocol embedded IP-PBX System for Multimedia Communication
Jung-Jang Kwon · The Journal of the Korean Institute of Information and Communication Engineering · 2007
In this paper we researched on the implementation of the B-ISDN protocol embedded IP-PBX System with the computers interconnected by the Internet for the telephone exchange and multimedia communication. For the improvement on the structural problems of the previous PABX we designed the structure of the IP-PBX System, defined message and data structure for call control, designed call control state transition, and implemented call control message flows for user's communication.