官术网_书友最值得收藏!

Chapter 2. The SIP Express Router

We discussed in the last chapter the big picture of a VoIP provider. Usually a VoIP provider is composed of several components. These components can reside in the same machine or be spread over several machines depending on your dimensioning. One of these components is the SIP proxy server, in our case the server running the OpenSER software. As the name implies, what best describes the SER is a SIP Router. It is able to manipulate the SIP headers and route packets at extremely high speeds. Third-party modules give SER extreme flexibility to play roles for which it was not originally intended, such as NAT traversal, IMS, Load Balancing, and other functionalities. In this chapter we will show you the possibilities and the architecture of the SIP Express Router.

By the end of this chapter you will be able to:

  • Explain what the SIP Express Router (SER) is
  • Choose between two available open-source projects, SER and OpenSER
  • Describe their usage scenarios
  • Distinguish between the different sections of the openser.cfg file
  • Describe the processing of SIP messages
  • Distinguish between loose and strict routing
  • Distinguish between SIP and SDP
主站蜘蛛池模板: 古浪县| 邓州市| 汉阴县| 遵义县| 雷波县| 沿河| 青河县| 亳州市| 卫辉市| 黄骅市| 仙游县| 浦江县| 绵竹市| 乐东| 津市市| 孟连| 晋州市| 平安县| 修武县| 沂南县| 犍为县| 阳江市| 衡阳县| 玉龙| 金寨县| 团风县| 久治县| 贵阳市| 灵宝市| 当阳市| 仁怀市| 湖南省| 天镇县| 杭州市| 彭州市| 浏阳市| 高尔夫| 万宁市| 阳西县| 平顶山市| 泌阳县|