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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 provides a great opportunity for the development of VoIP network-based SIP-based VoIP system with the characteristics of low protocol complexity, scalability and low bill. First of all, this paper analyzes the principle of SIP protocol, deeply studies the related technology of VoIP, and then sets up the local area network VoIP telephone system through the configuration of softswitch center, relay equipment and terminal equipment, and tests the system by using the Wireshark tool The signaling process was tested and analyzed. Test and analysis shows that the voice call of the local area network VoIP telephone system based on the SIP protocol is clear, the system works stably, has better performance, and has obvious advantages over the traditional telephone.