局域网络VoIP电话系统设计

On the Design of Local Area Network VoIP Telephone System

网络技术的迅猛发展,为具有低协议复杂度、扩展性强、话费低廉等特点的基于SIP协议的VoIP网络电话系统的发展提供了巨大机遇。首先对SIP协议原理进行了分析,深入研究了VoIP相关技术,然后通过对软交换中心、中继设备及终端设备配置,搭建了局域网络VoIP电话系统,并对系统进行了通话测试,用Wireshark工具对信令流程进行了测试分析。测试分析表明,基于SIP协议的局域网络VoIP电话系统语音通话清晰、系统工作稳定,具有较好的性能,较传统电话优势明显。

The rapid development of network technology has provided great opportunity for the develop- ment of VolP network telephone system, which has the characteristics of low protocol complexity, strong expansibility, low cost and so on. This paper first analyzes the principle of SIP protocol, the VolP related technologies are deeply studied. Through the configuration of the soft switching center, relay equipment and terminal equipment, the local network VolP telephone system is set up, the call is tested on the sys- tem, and the signaling process is tested and analyzed with the tool of Wireshark. The test and analysis show that the speech quality of the local area network VolP telephone system based on SIP protocol is clear, the system is stable and the system performance is good. This system has obvious advantages com- pared with the traditional telephone system.