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OpenSIPS Summit - 5th of August 2013, Chicago, USA
An 100% OpenSIPS event that aims to provide the necessary knowledge to understand and use OpenSIPS. If you are looking to discover, understand and evaluate OpenSIPS, the OpenSIPS Summit is the right place to be.
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OpenSIPS is a an Open Source SIP proxy/server for voice, video, IM, presence and any other SIP extensions.


OpenSIPS is a multi-functional, multi-purpose signaling SIP server - it can act as SIP Router/Switch, SIP Registrar, Application Server, Redirect Server, Load Balancer / Dispatcher, Back-to-Back User Agent, Presence Server, IM Server, Session Border Controller, SIP Front-End, NAT traversal Server, IP Gateway (SMS, XMPP) and others - see the full Set of Features.


OpenSIPS is recommended for any kind of SIP scenario / service by:

  • the high throughput - tens of thousands of CPS, millions of ‏simultaneous calls (see official tests)
  • the flexibility of routing and integration - routing script for implementing custom routing logics, several interfacing APIs (see the Manual)
  • the effective application building - more than 120 modules to provide features, for SIP handling, for backend operations, for integration, for routing logics (see List of Modules)
» Download OpenSIPS
 1.9.1 - latest stable release
1.8.3 - latest LTS release
1.10.0 - devel version
2.0 - NG version
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 As OpenSIPS is free software, please support our work by making a donation to the project.
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Latest News...


WebRTC Integration
4th of July 2013 Our Free VoIP service now has WebRTC capabilities - watch the tutorial in order to see how we did it.
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OpenSIPS Foundation
6th of June 2013 The OpenSIPS Foundation is here to help you to get even more involved in the OpenSIPS project.
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Documentation re-Factoring
30th of May 2013 Major reworking of the OpenSIPS Documentation.
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GitHub Migration
20th of May 2013 OpenSIPS is now on available GitHub.
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OpenSIPS Releases
8th of May 2013 OpenSIPS 1.8.3 and 1.9.1 minor releases are now available for download.
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OpenSIPS eBootcamp
10th of April 2013 the future sessions are scheduled for the next 12 months.
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Community Tweets...


OpenSIPS and Apple Push Notification
12th of April 2013 Great tutorial on OpenSIPS and Apple Push Notification service(APNS) integration.
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Twilio seems to be using OpenSIPS
20th of March 2013 Saúl Ibarra Corretgé claims that Twilio is using OpenSIPS.
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OpenSIPS with Cassandra Backend
21th of January 2013 Tutorial covering setting up OpenSIPS with Cassandra as it's cache store.
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OpenSIPS and A2Billing
12th of January 2013 Integration of OpenSIPS, Asterisk and A2Billing.
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Monitoring OpenSIPS with SNMP
19th of September 2012 Using Zabbix in order to monitor OpenSIPS via SNMP.
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OpenSIPS on Raspberry PI
4th of August 2012 Full tutorial on deploying OpenSIPS on a Raspberry PI.
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Page last modified on July 08, 2013, at 12:17 PM