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46 lines
2.2 KiB
46 lines
2.2 KiB
iptel.org SIP Express Router (SER) is a high-performance,
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configurable, free server implementing Session Initiation
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Protocol (SIP, RFC3216). SIP is a signaling protocol that
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allows Internet users to establish VoIP calls, advertise
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their presence status, send and receive instant messages,
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and maintain any kind of session including games and chats.
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A major benefit of SIP is it creates an open framework for
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composing services out of multiple components.
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SER features flexibility that allows it to act in many roles
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needed for implementation of such services. For example, it
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can act as registrar and location server to provide mobility
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to users. It can also act as an access control element that
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guards PSTN gateways or any other scare SIP resources. Its
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built-in configuration language along with use of "plug-in"
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modules allows to add more new functionality easily. Currently
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available plug-ins implement messaging gateways to SMS and
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Jabber, RADIUS accounting and authorization, message store,
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SIMPLE presence agent and ENUM.
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There is also an application interface, that provides effective
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coupling with SIP-unaware applications. The applications, like web
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interface or administrative tools, can easily watch and manipulate
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server status, initiate SIP transactions and build features
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such as "click-to-dial". The application-interface is language-
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independent and can be used along with a variety of effective
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programming languages.
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SER has been designed to be able to scale and deal with various
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stress conditions. These may include communication with broken
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network components, signaling over NATs, power-up reboot avalanches,
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large user population, and any SIP applications generating high
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volume of traffic. Currently, transactional throughput of the
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server reaches thousands of calls per second on an off the
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shelf PC.
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--
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Technical information: ANSI C-Written. Ported to Linux, BSD and Solaris (Sun).
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Support for both IPv4 and IPv6. Small footprint size: 300k core, all common
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plug-ins (optional) up to 630k. Web-based user provisioning, serweb, available.
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More information: SER distribution and documentation is available from
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iptel.org's site at http://www.iptel.org/ser/. User forum is available
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at http://mail.iptel.org/mailman/listinfo/serusers/.
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