PIP：基于SIP技术的强大服务器 (pjsip sip服务器)
PIP: A Powerful Server Based on SIP Technology
With the rise of VoIP (Voice over Internet Protocol) technology, traditional communication methods have been replaced by internet-based applications. SIP (Session Initiation Protocol) technology plays a significant role in providing a platform for these applications. PIP is an open-source SIP stack software library that serves as the foundation for building communication-related servers, clients, and applications. In this article, we will explore the benefits of using PIP and why it is becoming increasingly popular.
PIP is easy to use and provides a stable platform for developing communication applications. The software stack offers a range of features and functions that can be customized to meet specific application requirements. For instance, the stack supports audio and video calls, instant messaging, and presence, making it a versatile communication tool.
One of the advantages of PIP is its compatibility with various platforms including Linux, Windows, Mac, and iOS. This makes it easy to integrate with existing applications and to build new applications without worrying about compatibility issues. In addition, it is an open-source technology, meaning that developers have access to the source code and can customize the technology to meet their exact requirements.
The software stack is highly configurable, allowing developers to optimize its performance. For instance, it supports various codecs, including G.711, G.722, and OPUS, allowing developers to choose the best codec for their application’s needs. This, coupled with the fact that PIP is highly scalable, makes it an ideal platform for both all and large projects.
Security is always a concern when dealing with internet-based communication platforms. PIP offers a secure communication environment that is based on industry-standard TLS (Transport Layer Security) protocol. This ensures that all communication is encrypted, providing a high level of security for users.
Apart from security, call quality is another important factor in communication applications. PIP offers excellent call quality due to its support for wideband audio codecs. This ensures that communication is clear and natural, improving the overall user experience.
In conclusion, PIP is an excellent SIP stack software library that offers a wide range of features and functions for developing communication applications. Its compatibility with various platforms, scalability, and high level of configurability make it an excellent choice for developers. Moreover, its strong security protocols and support for wideband audio codecs ensure that users can communicate efficiently and securely. With its easy-to-use interface and open-source nature, it is no surprise that PIP is becoming increasingly popular with developers worldwide.
相关问题拓展阅读：
如何在 android 设备上使用 pjsip G.729 编解码的功能
之一步是生成 pjsip 为 Android （步骤为 Ubuntu Linux） 的源代码：
1.设置 ANDROID_NDK_ROOT 环境变量设置为您 NDK 根文件夹。
2.转到 pjsip 2.x 文件夹并创建 pjlib/include/pj/config_site.h 包括 config_site_sample.h ( #include )
3.运行./configure-android
4.运行make clean && make depend && make
之后这些步骤，将高镇有几个静态库中的几个文件夹。建议将它们分组相同的文件夹 （更好在您的项目中） 中的：
mkdir /pjsip_libs
find . -name *.a | xargs -I % cp % /pjsip_libs/
一旦自己的所有库，您需要将这些库添加到您的项目 Android.mk 文件，这是由包括一个新的模块节每个图书馆。此模块部分应该是一样的东西：
include $(CLEAR_VARS)
LOCAL_MODULE := pjsua-arm-unknown-linux-androideabi
LOCAL_SRC_FILES := $(MY_PJLIB_PATH)/libpjsua-arm-unknown-linux-androideabi.a
include $(PREBUILT_STATIC_LIBRARY)
，其实是一节中构建您的 JNI 项目的源没唯代码，所有模块都添加到您的静态库的引用：
LOCAL_STATIC_LIBRARIES := pjsua-arm-unknown-linux-androideabi …
这将包括 pjsip 的引用加入您的 JNI 库。现在，您需要配置 pjsip UA 实例。
有一个关于 init 和开始的解释 pjsip 的 UA (pjsua) 在 pjsip/include/pjsua-lib/pjsua.h 但要遵循的主要步骤是：
1.创建一个具有 UA 实例pjsua_create
2.创建一个工作线程与pj_thread_create
3.UA 实例的设置的默认配置：
pjsua_config cfg 桩 ；pjsua_logging_config log_cfg ；pjsua_media_config media_cfg ；
pj_cli_cfg_default(&app_config.cli_cfg.cfg) ；pjsua_logging_config_default(&log_cfg) ；pjsua_media_config_default(&media_cfg) ；
4.初始化堆栈与pjsua_init
5.启动与堆栈pjsua_start
戚察粗从这里，有充足的配置选项 （日志、 媒体、 交通工具等）
您可以找到基本 PIP 教程在这里，和里面 pjsip 的源的根路径，有一个基本 （但不够完整，基本的 SIP 使用情况） 在：pjsip-apps/src/samples/simple_pjsua.c
编辑：在生成时在 pjsip 应用程序的 android 项目，可以面临一个问题，因为 pjsua app 不生成默认情况下，对一般生成 （更具体地说，pjsua： 目标不包括所有上： 在 pjsip-应用程序/生成/生成文件的目标)。若要修复这只是转到 pjsip-应用程序/创建和运行：
使 pjsua
这将创建在正确的对象文件: pjsip-apps/build/output/pjsua-arm-unknown-linux-androideabi/ (需要构建 android 样本时)。
一旦所有相应的对象文件，您可以在 pjsip-应用程序/src/pjsua/android 系统再次运行 ndk 生成
编译运行pjsip的sample出现问题
修槐圆改config_site.h文件 在pjproject-2.4.5\pjlib\铅迹塌include\pj目录州弯下 增加 #define PJMEDIA_AUDIO_DEV_HAS_ALSA 1
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