SIP Trunk网关穿越NAT的研究  

The Research of SIP Trunk Gateway Traversal NAT

作　　者：文银娟[1] 姜惠娟[1] 

机构地区：[1]定西师范高等专科学校计算机系,甘肃定西743000

出　　处：《甘肃高师学报》2013年第5期60-63,共4页Journal of Gansu Normal Colleges

摘　　要：目前,企业内部大量部署的是支持SIP的IP-PBX,将计算机网和电话网集成在一起;NAT技术的出现,缓解了IP地址紧张的局面.通过NAT设备实现企业内部私网连接到公网.但NAT设备不能支持运用SIP协议的音频和视频的穿越,因此,实现SIP穿越NAT是一个迫在眉睫的难题.本方案中提出SIP Trunk网关技术,在不增加辅助设备的情况下,实现SIP协议成功的穿越NAT,节省了造价和维修成本.At present, the IP-PBX which is supporting Session Initiation Protocol （SIP） is mass-deployed within the enterprises, and it integrates computer network witb. telephone network; The emergence eft NAT technology eases the tension of the IP address＇s assignment. By using NAT equipment the internal private network can be c, onnected to the public network, but the NAT equipment can not support the audios and the videos which using SIP protocol to traverse. So implementing the SIP＇s NAT Traversal is an imminent problem. In this paper, SIP Trunk gateway technology can make the SIP Traversal come true without adding auxilial＇y equipment ,so it can save the cost and maintenance costs.

关 键 词：NAT穿越 SIP中继网关 会话初始协议 

分 类 号：TP306[自动化与计算机技术—计算机系统结构]