원문정보
초록
영어
It is the requirement of the next generation communication systems that devices should
provide all existing and future communication services in integral way. A novel distributed
wireless VoIP infrastructure based on SIP protocol, WiFi, and smart devices is proposed in
this paper. The proposed architecture of the infrastructure is simple, manageable, stable, and
extendable. The prototype test bed is an Infrastructure of distributed wireless VoIP Server
based SIP, which provides text, voice and video communication to both wired and wireless
devices. One of the main characteristic of this model is roaming and mobility. User
authentication is centralized, and SIP server uses remote centralized AAA server for user
authentication . Thus mobile users don’t need to worry about roaming and changing the
Server. The whole architecture is modular, and the reason for isolating the core modules
from the extended modules is flexibility and extendibility. At the end of the paper, detailed test
approaches ,test results and result analysis of the prototype system are presented. Test results
show that the prototype system reach the design goal of this research work..
목차
1. Introduction
2. The Distributed Server Architecture
3. Prototype Embedded System design
3.1. Development Environment and Development tools
3.2. Prototype System Model
4. SIP Server Design
4.1. SIP Server Design Objective
4.2. SIP Server Design Model
4.3. Network Interfaces
5. Complete System Working Diagram
6. Server Behavior
7. Test Objectives and Methods
8. Test Results and Analysis
9. Conclusions and Future Work
10. Acknowledgements
11. References