Building Telephony Systems with OpenSER

最新推荐文章于 2017-04-28 16:48:00 发布

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OpenSER是一款基于SIP协议的灵活、免费开源VoIP服务器，适用于创建、修改及终止包含互联网电话呼叫在内的多媒体会话。它专为大规模IP电信基础设施而设计，采用纯C语言编写，并针对Linux/Unix-like系统进行了架构特定优化，能够支持高达4百万用户的同时在线。该服务器还具备用户跟踪、VoIP会话设置、即时消息中继等功能。

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OpenSER is a flexible, free open-source VoIP server based on the Session Initiation Protocol (SIP), an application-layer control (or signaling) protocol for creating, modifying, and terminating sessions with one or more participants, including internet telephone calls, multimedia distribution, and multimedia conferences.

Engineered to power IP telephony infrastructures up to large scale, OpenSER is written in pure C for Linux/Unix-like systems with architecture-specific optimizations to offer high performance; it is able to handle 4 million users on a single processor server. The server keeps track of users, sets up VoIP sessions, relays instant messages, and creates space for new plug-in applications.

It can be used on systems with limited resources as well as on carrier-grade servers, scaling up to thousands of call setups per second. It is customizable, being able to feature as fast load balancer; SIP server flavors: registrar, location server, proxy server, redirect server; gateway to SMS/XMPP; or advanced VoIP application server.

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