SIP介绍 opensips构建电话系统第二版

tags:SIP介绍 opensips构建电话系统第二版 创建时间:2016-07-01 10:46:27


Before we dive into OpenSIPS, it is very important to understand some important concepts related to Session Initiation Protocol (SIP). In this chapter, we will cover a brief tutorial regarding the concepts used later in this book. By the end of this chapter, we will have covered the following t