Amazon’s SQS Events in OpenSIPS 3.6
10th of September 2024 More on the OpenSIPS 3.6 integration with the AWS cloud using Amazon Simple Queue Service (SQS). Read more...

High Availability for VoIP in Microsoft Azure
06th of February 2025 Discover how to implement high availability in Microsoft Azure in our latest blog post! Read more...

How to Eliminate Zombie Registrations in OpenSIPS
04rd of October 2024 Or how to improve your OpenSIPS registrar performance and also your user's experience in the same time. Read more...

Amazon’s SQS Events in OpenSIPS 3.6
10th of September 2024 More on the OpenSIPS 3.6 integration with the AWS cloud using Amazon Simple Queue Service (SQS). Read more...

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23rd of October 2023

Minor releases: OpenSIPS 3.4.3, 3.3.9, 3.2.16
20th of December 2023 EOL for OpenSIPS 3.3! New minor versions for all stable releases. Read more...

Amazon’s DynamoDB integration in OpenSIPS 3.6
07th of August 2024 OpenSIPS 3.6 turns an eye on backends to facilitate AWS integration, like DynamoDB NoSQL database. Read more...

OpenSIPS Cluster Hardening in Large Dataset Scenarios\\

We've recently pushed several stability improvements to the clusterer module, when working with large datasets. Read more...

HTTP/2 Server Support for Next-Generation Services in OpenSIPS 3.5
27th of March 2024 OpenSIPS 3.5 includes support for processing HTTP/2 requests, becoming more interoperable with other components in 5GC systems. Read more...

Build an IMS using OpenSIPS 3.5 – S-CSCF
21st of March 2024 Focusing on the S-CSCF (Serving – Call Session Control Function) component, with async Diameter, AKA auth and others. Read more...

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Build an IMS using OpenSIPS 3.5 – S-CSCF
21st of March 2024 Focusing on the S-CSCF (Serving – Call Session Control Function) component, with async Diameter, AKA auth and others. Read more...

Minor releases: OpenSIPS 3.4.2, 3.3.8, 3.2.15
18th of October 2023 New minor versions for all stable releases! Read more...

» OpenSIPS Community Edition Solutions - 29 October 2024
Open Source complete platforms to address real-life SIP scenarios, for demos, a PoCs, or startup production. \\

» OpenSIPS Control Panel 9.3.5 Released - 10 October 2024
As the official companion for OpenSIPS 3.5, with upgrades and extensions. \\

» Stable release OpenSIPS 3.5.0 - 25 July 2024
The first stable release of the 3.5 family is out, bringing a first complete IMS support, improved SQL ops and many more. \\

Read our latest blog post which provides all the information you need to use the new OpenSIPS Python Package:

The SQL support, reloaded
13th of March 2024 See how the SQLops module was born from the AVPops ashes and how you can do from script JSON structured SQL queries with prepared statements support. Read more...

Built-in Diameter Server in OpenSIPS 3.5
07th of March 2024 A blog post on how to build Diameter server-side logic within your opensips.cfg file. Read more...

» OpenSIPS eBootcamp 2024 - 14 October 2024
The 2024 OpenSIPS eBootcamp training is all set. Check the discounts for Startup's and Consultants, by end September. Register now! \\

Minor releases: OpenSIPS 3.4.1, 3.3.7, 3.2.14, 3.1.17
31st of August 2023 Four new minor versions of our stable releases are out! Read more...

4rd of October 2024

LaunchDarkly integration with OpenSIPS 3.5
04th of March 2024 In-cloud management of feature flags was never been so easy as via LaunchDarkly and OpenSIPS 3.5. Read more...

» OpenSIPS Summit 2024, 14-17 May, Valencia - 13 March 2024
The 2024 Summit has listed its speakers and schedule! Register now and get ready for them! \\

IMS status in OpenSIPS 3.5
20th of February 2024 What are the goals when comes to the IMS support in OpenSIPS 3.5 and what is the current status of work. Read more...

The 2024 OpenSIPS eBootcamp training is all set. Check the discounts for Startup's and Consultants, by end September. Register now! \\

OpenSIPS Control Panel 9.3.4 has been released
9th of November 2023 OpenSIPS Control Panel 9.3.4 corresponding to the latest OpenSIPS 3.4.x version is now released Read more...

OpenSIPS 3.1 End of support!
31st of August 2023 OpenSIPS 3.1.x branch is no longer supported, with the 3.1.17 version being the last release of the stable branch! Read more...

Our Participation in the OpenSIPIt'03 online testing event!
5th of October 2023 A few words about how the event unfolded and what we got out of it. Read more...

Troubleshooting one way audio calls
06th of July 2023 We all faced the "One way audio" problem, but troubleshooting it was not always a clear path, as the causes were not fully understood all the time. Read more...

» OpenSIPS Summit 2024, 14-17 May, Valencia - 13 March 2023\\

» OpenSIPS Control Panel 9.3.4 Released - 09 November 2023
As the official companion for OpenSIPS 3.4 . \\

3.4.6 - stable LTS release ||

3.4.6 - stable LTS release
3.2.19 - stable LTS release ||

Announcing: OpenSIPS 3.4 LTS stable!
19th of July 2023 OpenSIPS 3.4.0-rc1 now promotes to 3.4.0 stable, which will be supported for the next 3 years! Read more...

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» IMS OpenSIPS Working Group - 08 December 2023
The Scope of Work was just defined, moving ahead with the Technical Requirements. \\

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Minor releases: OpenSIPS 3.4.4, 3.3.10, 3.2.17
21st of February 2024

Minor releases: OpenSIPS 3.3.6, 3.2.13 and 3.1.16
21st of June 2023 Three new minor versions for the currently supported OpenSIPS stable releases are out! Read more...

OpenSIPS 3.5 includes support for processing HTTP/2 requests, being more interoperable with other components in 5GC systems.

The 2024 Summit has listed its first set of speakers! Register now and get ready for them! \\

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21th of March 2024

Smart Logging with OpenSIPS 3.4
14th of June 2023 The 3.4 comes with multiple formats for the logs and also with the ability to send logs to multiple destinations. Read more...

• 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)

SIPssert and the journey of testing OpenSIPS
27th of April 2023 Check out how OpenSIPS is already benefiting from the SIPssert testing framework Read more...

SIPssert – an OpenSIPS Testing Framework
04th of April 2023 Test OpenSIPS code or SIP platform by writing your own tests with custom SIP flows and DB / MI / API interactions. Read more...

B2BUA Bridging Improvements In OpenSIPS 3.4
23rf of March 2023 The re-bridging mechanism of the B2B was reworked to make it more reliable, easier to interop and with on-hold & failover support. Read more...

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OpenSIPS 3.4.0-rc1
20th of June 2023 A first release candidate for 3.4 is now available! Read more...

API driven SIP User-Agent end-point with OpenSIPS 3.4
22nd of March 2023 OpenSIPS as a mixed back-to-back, with a SIP User-Agent on one side and a custom logic on the other side, API controlling what how the SIP side should behave. Read more...

Minor releases: OpenSIPS 3.3.5, 3.2.12 and 3.1.15
19th of April 2023 New stable releases for each major branch, packing important fixes Read more...

» OpenSIPS Summit 2024 Vote for location - 16 November 2023
Valencia was voted as the city to host the OpenSIPS Summit 2024. \\

» OpenSIPS 3.5 planning - 14 November 2023
The planing for 3.5 major release has started, around the IMS topic. Join the IMS OpenSIPS Working Group. \\

» OpenSIPS Summit 2024 Vote for location - 16 November 2023\\

» Stable release OpenSIPS 3.4.0 - 19 July 2023
Bringing performance and conformity testing, B2B improvements, better logging support and many more. \\

» OpenSIPS Summit 2024, Call for Location - 07 November 2023
Get involved in nominating an European city (and a bit more ....) for the 2024 OpenSIPS Summit edition. \\

How to Generate Your Own STIR/SHAKEN Certs
31st of October 2022 Become your own STIR/SHAKEN CA and generate as many free SP certificates as you want! Read more...

Get involved in nominating an European city (and a bit more ....) for hosting the 2024 OpenSIPS Summit edition. We are all ears :). \\

The MSRP gateway
9th of June 2022 OpenSIPS 3.3 can bridge the two Instant Messaging worlds: the simple SIP MESSAGE world (page mode) and the complex MSRP world (session mode) ! Read more...

Foir new minor versions of our stable releases are out! Read more...

Minor releases: OpenSIPS 3.3.4, 3.2.11 and 3.1.14
22nd of February 2023 Three new minor versions of our stable releases are out! Read more...

Announcing: OpenSIPS 3.1 End of support!\\

Minor releases: OpenSIPS 3.3.3, 3.2.10 and 3.1.13
20th of December 2022 A stable non-LTS 3.3 minor release, along with two new minor versions of our stable LTS 3.2 and 3.1 are out! Read more...

Minor releases: OpenSIPS 3.3.2, 3.2.9, 3.1.12
19th of October 2022 Three new minor versions of our stable LTS releases are out! Read more...

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» OpenSIPS eBootcamp Registration open for Asia/Pacific - 08 June 2023
We have two training sessions, one for Europe-America timezones, another for Asia-Pacific timezones - 40 hours of hands-on training with OpenSIPS 3.4. \\

» Beta release for OpenSIPS 3.4 - 17 May 2023
The new major 3.4 version is ready, bringing performance and conformity testing, B2B improvements, better logging support and many more. \\

Minor releases: OpenSIPS 3.3.1, 3.2.8, 3.1.11
17th of August 2022 A new set of minor releases is now available for all supported OpenSIPS branches! Read more...

OpenSIPS Contact Center, or blending chats and calls
8th of June 2022 Understand in details the new chat/MSRP support in the Call Center module, OpenSIPS 3.3 , how it works and how to use it.! Read more...

3.3.5 - stable release
3.2.12 - stable LTS release
3.1.15 - stable LTS release ||

Stable releases: OpenSIPS 3.3.0
19th of August 2021 The first stable release of the new OpenSIPS 3.3 is available to use! Read more...

Releases: OpenSIPS 3.3.0-rc1, 3.2.7 and 3.1.10
22nd of June 2022 A first release candidate for 3.3 is now available, along with two new stable minors! Read more...

Using the Diameter Client Capability of OpenSIPS 3.3
2nd of June 2022 The ability to build & send arbitrary Diameter requests from script is finally here! Read more...

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» OpenSIPS Summit 2023, Houston - 23-26 May 2023
All set for our US edition, ready for registrations and paper submissions. Join us for 4 intensive days of knowledge and networking. \\

» OpenSIPS Control Panel 9.3.3 Released - 09 March 2023
Featuring multi-panel dashboard, status/report and keepalived new tools. \\

The MSRP eco-system in OpenSIPS 3.3
30th of May 2022 As OpenSIPS 3.3 focused on messaging, mainly on MSRP / session based messaging, here is a detailed walk thru the entire MSRP stack in OpenSIPS 3.3 and its capabilities, from relaying, to APIs and gatewaying! Read more...

Beta release: OpenSIPS 3.3.0-beta
18th of May 2022 OpenSIPS 3.3 just got beta released! Read more...

» OpenSIPS 3.4 Planning - 22 Dec 2022
Checkout the roadmap of OpenSIPS 3.4 major release, built around code/functionality testing and feature consolidation. \\

OpenSIPS Security Audit - mission accomplished
28th of April 2022 A lot of fuzzing, testing and of course fixing. Everything just to make OpenSIPS more secure! Read more...

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Fine-Grained TCP Configuration Using the "tcp_mgm" Module
20th of April 2022 OpenSIPS 3.3 brings full control over TCP connections along with TCP throughput enhancements! Read more...

OpenSIPS Control Panel v 9
14th of April 2022 A new major release with DB based configuration, per tool settings, new charting engine and more! Read more...

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Minor releases: OpenSIPS 3.3.40, 3.2.11 and 3.1.14\\

Minor releases: OpenSIPS 3.2.6 and 3.1.9
22nd of April 2022 Two new minor versions of our stable LTS releases are out! Read more...

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» Stable release for OpenSIPS 3.3 - 14th of July 2022
The new major 3.3 version is ready, bringing MSRP, Contact Center, TCP tuning, Status/Reporting and more relaying capabilities. \\

Checkout the roadmap of OpenSIPS 3.4 major release, built around code/functionality testing and feature consolidation. \\

Minor releases: OpenSIPS 3.2.5 and 3.1.8
23rd of February 2022 Two new minor versions of our stable LTS releases are out! Read more...

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OpenSIPS Control Panel v 9
14th of April 2022 A new major release with DB based configuration, per tool settings, new charting engine and more! Read more...

Minor releases: OpenSIPS 3.2.4 and 3.1.7
22nd of December 2021 Two new minor versions of our stable LTS releases are out! Read more...

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» OpenSIPS Summit 2022 - 19 May 2022
27th-30th of Sept, Athens, Greece, in-person and online, Call for Papers and Registration open! \\

Minor releases: OpenSIPS 3.2.3 and 3.1.6
20th of October 2021 Two new minor releases are available for all supported OpenSIPS branches! Read more...

» Stable release for OpenSIPS 3.3 - 17th of July 2022
The new major 3.3 version is ready, bringing MSRP, Contact Center, TCP tuning, Status/Reporting and more relaying capabilities. \\

» Beta release for OpenSIPS 3.3 - 18 May 2022\\

Minor releases: OpenSIPS 3.2.2 and 3.1.5
19th of August 2021 Two new minor releases are available for all supported OpenSIPS branches! Read more...

Beta release: OpenSIPS 3.3.0\\

OpenSIPS 3.3 has just got his beta release! Read more...

Managing RCS Capabilities with OpenSIPS
31th of March 2022 Making OpenSIPS 3.3 RCS ready - let’s take a look at some sample RCS-enriched SIP messages and what those lists of RCS capabilities look like? Read more...

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OpenSIPS Control Panel v 9 – interim update\\

OpenSIPS 3.3 – interim update
06th of April 2022 Learn what was already done, what is left to be done and when the 3.3 major release will be ready ! Read more...

Status/readiness and reporting framework in OpenSIPS 3.3
17th of March 2022 How manageable and transparent is your OpenSIPS when comes to what is happening within its internals? is my OpenSIPS ready? What happened within my OpenSIPS? Read more...

» OpenSIPS Bootcamp online training - 23 May - 3 June 2022
A ten days (40 hours) intensive and practical training on OpenSIPS 3.2. \\

OpenSIPS 3.3 Messaging in the IMS and UC ecosystems
20th of January 2022 Find out the OpenSIPS 3.3's vision on Instant Messaging in the IMS and Unified Communications ecosystems - it's definitely a problem solver! Read more...

27th-30th of SeptAthens, Greece, in-person and online, Call for Papers and Registration open! \\

» OpenSIPS Summit 2022 - 22 April 2022
The community has spoken - it will be Athens, Greece, September 2022. Stay tuned for upcoming details. \\

The OpenSIPS Security Audit is happening
30th of September 2021 The security audit has already started, EnableSecurity is doing a fantastic job in terms of torturing OpenSIPS 3.2! Read more...

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» OpenSIPS Control Panel v 9 - 14 April 2022
A new major release with DB based configuration, per tool settings, new charting engine and more. \\

18nd of May 2022

Final release: OpenSIPS 2.4.11
22nd of June 2021 OpenSIPS 2.4 LTS has come to its final minor release, the 11th of its kind! Read more...

» OpenSIPS 3.3 Status - 06 Apr 2022
See OpenSIPS 3.3 roadmap in the IMS and Unified Communications ecosystems. \\

A new major release is available for Control Panel, with full configuration via web and DB, per tool settings, new charting engine and more. \\

A ten days (40 hours) intensive and practical training, covering installation, configuration and administration on OpenSIPS 3.2. 
» OpenSIPS 3.3 Status - 06 Apr 2022
Checkout the roadmap of OpenSIPS 3.3 major release as part of the IMS and Unified Communications ecosystems and what is the current status. \\

Minor releases: OpenSIPS 3.2.5 and 3.1.8
23rd of February 2022

Minor releases: OpenSIPS 3.2.4 and 3.1.7
22nd of December 2021

Minor release: OpenSIPS 3.1.3
22nd of June 2020 The third minor release of our OpenSIPS 3.1.3 (LTS) is now available! Read more...

Running MI commands from script with OpenSIPS 3.2
30th of June 2021 Check out the pros and cons running MI commands from script using the latest OpenSIPS 3.2! Read more...

» OpenSIPS 3.2.0 released - 21 Jul 2021
OpenSIPS 3.2 major version goes 3.2.0 stable, with Clustering, Security, Cloud/Integration and Diameter support. \\

» OpenSIPS 3.3 Planning - 23 Dec 2021
Checkout the roadmap of OpenSIPS 3.3 major release and how this fits into the IMS and Unified Communications ecosystems. \\

Status/readiness and reporting framework in OpenSIPS 3.3
17th of MArch 2022 How manageable and transparent is your OpenSIPS when comes to what is happening within its internals? is my OpenSIPS ready? What happened within my OpenSIPS? Read more...

OpenSIPS 3.3 Messaging in the IMS and UC ecosystems
20th of January 2022 Find out the OpenSIPS 3.3's vision on Instant Messaging in the IMS and Unified Communications ecosystems - it's definitely a problem solver! Read more...

The OpenSIPS Security Audit is happening
30th of September 2021 The security audit has already started, EnableSecurity is doing a fantastic job in terms of torturing OpenSIPS 3.2! Read more...

Running MI commands from script with OpenSIPS 3.2
30th of June 2021 Check out the pros and cons running MI commands from script using the latest OpenSIPS 3.2! Read more...

NEW Diameter Protocol Support in OpenSIPS 3.2
17th of June 2021 Get a picture for how Diameter and the freeDiameter project fit into OpenSIPS 3.2 and what we built on top! Read more...

Media high availability/re-anchoring using OpenSIPS 3.2
09th of June 2021 Find out how you can achieve media high availability using any media relay server you are using by re-anchoring ongoing calls' media to a different relay node. Read more...

OpenSIPS 3.2 and the supported SSL/TLS libraries
3rd of Jun 2021 How easy is to switch between wolfSSL and openSSL libraries when using the TLS support in OpenSIPS 3.2 ? Find the answer. Read more...

The OpenSIPS Security Audit is happening\\

Clustering Engine Improvements in OpenSIPS 3.2
22th of Apr 2021 The SIP clustering support in OpenSIPS keeps evolving, for better scalability and redundancy solutions. Read more...

Minor releases: OpenSIPS 3.2.4 and 3.1.7
22nd of December 2021

Beta release: OpenSIPS 3.2.0
27th of May 2021 Check out the latest beta release of the new OpenSIPS 3.2.0! Read more...

Checkout the roadmap of OpenSIPS 3.3 major release. And vote for what matters the most for you. \\

OpenSIPIt 01 – Testing the Trending SIP Security Enhancements
20th of Apr 2021 Summary of the event, along with the status quo regarding the new SIP "Security RFCs". Read more...

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3.1.6 - stable LTS release ||

Minor releases: OpenSIPS 3.1.2 and 2.4.10
6th of May 2021 Two new minor versions of our stable LTS releases are out! Read more...

Minor releases: OpenSIPS 3.2.2 and 3.1.5
19th of August 2021

Final release: OpenSIPS 3.0.5
22nd of December 2020 The last release of the OpenSIPS 3.0 version is now available to download! Read more...

Tips & Tricks for Advanced SIP Capturing
15th of Apr 2021 The 3.2 OpenSIPS is addressing new SIP capturing challenges: multi-call correlation, SIP server chaining, B2B-wise tracing.! Read more...

» OpenSIPS 3.2 Security Audit - 24 June 2021
A professional Security Audit (Pen Tests), as a public, collective effort - so get involved and sponsor. \\

» OpenSIPS Summit Distributed 2021 - 6-10 Sep 2021
The 2021 Summit has a green light! In the online, of course. Check the Call for Papers or Registration Options.  
||  \\

Two new minor releases are available for all supported OpenSIPS Branches! Read more...

Minor releases: OpenSIPS 3.2.1 and 3.1.4
17th of August 2021

Minor releases: OpenSIPS 3.1.1, 3.0.4 and 2.4.9
17th of November 2020 Three new minor releases are available for all supported OpenSIPS Branches! Read more...

» OpenSIPS 3.2.0 released - 27 May 2021
The beta release for OpenSIPS 3.2 major version is out, with Clustering, Security, Cloud/Integration and Diameter support. \\

Apache Kafka Producer in OpenSIPS 3.2
4th of Mar 2021 The Kafka support was added together with async sending and reporting support, even when using event_virtual! Read more...

3.1.2 - stable LTS release
2.4.10 - stable LTS release||

Beta release: OpenSIPS 3.2.0
27th of May 2021 Check out the latest beta release of the new OpenSIPS 3.2.0! Read more...

Minor releases: OpenSIPS 3.1.2 and 2.4.10
6th of May 2021 Two new minor versions of our stable LTS releases are out! Read more...

Final release: OpenSIPS 3.0.5
22nd of December 2020 The last release of the OpenSIPS 3.0 version is now available to download! Read more...

Minor releases: OpenSIPS 3.1.1, 3.0.4 and 2.4.9
17th of November 2020 Three new minor releases are available for all supported OpenSIPS Branches! Read more...

Stable release: OpenSIPS 3.1.0
22nd of July 2020 OpenSIPS 3.1.0 stable LTS is now released! Read more...

Beta release: OpenSIPS 3.1.0
27th of May 2020 Check out the latest beta release of the new OpenSIPS 3.1.0! Read more...

NEW Prometheus Module in OpenSIPS 3.2
25th of Feb 2021 Find out how you can monitor OpenSIPS with Prometheus and plot its statistics in Grafana! Read more...

Exploring SSL/TLS libraries for OpenSIPS 3.2
11th of Feb 2021 What are the SSL/TLS library candidates for OpenSIPS, now that OpenSSL proofed to be a no-go for the future! Read more...

Improved series-based call statistics using OpenSIPS 3.2
02nd of Feb 2021 How to build custom time series statistics (like ACD, AST, PPT, ASR, NER, CCR) directly from OpenSIPS script! Read more...

» OpenSIPS Bootcamp online training - 17-28 May 2021
A ten days (40 hours) intensive and practical training, covering installation, configuration and administration on OpenSIPS 3.1. 
» OpenSIPS 3.2 Planning - 23 Dec 2020
The plan for the next 3.2 major release is here, so check its philosophy and features! \\

Minor release: OpenSIPS 2.4.7 and 3.0.2
28th of January 2020 The new year has come with two new OpenSIPS minor releases: 2.4.7 and 3.0.2! Read more...

The 2021 Summit has a green light! In the online, of course. Check the Call for Papers or Registration Options.  \\

The 2021 Summit has a green light! In the online, of course. First step, the Call for Papers. \\

Minor release: OpenSIPS 3.0.1
1st of October 2019 The first minor release of OpenSIPS 3.0 branch consists of important bug fixes! Read more...

» OpenSIPS 3.1 is out - 22th of July 2020
Let's welcome the 3.1 LTS stable release, focused on complex call crafting. Learn how you can do Call API, inter-call media exchange, Push Notification, STIR/SHAKEN and many others Class 5 adds-on.  \\

Script driven SIP BAck-2-Back with OpenSIPs 3.2
07th of Jan 2021 The B2B support in OpenSIPS just got more powerful and simpler the use by migrating from XML to OpenSIPS routing script! Read more...

Summary of the event and what the status quo around the new SIP "Security RFCs" looks like.

OpenSIPS Summit Distributed 2020- Speakers and Moderators
06th of Aug 2020 Some useful insights about the OpenSIPS Summit Distributed 2020 new format and new ideology ! Read more...

Call API first version has been released
11th of Jun 2020 The first version of the new Call API has been released. Check out how simple it is to control your calls through an API using this new cool project! Read more...

Cross dialog data accessing
18th of May 2020 Check out how easy is with OpenSIPS 3.1 to access the dialog and accounting data of another ongoing call! Read more...

(:tableend:)

7th of May 2020

SIP Push Notification with OpenSIPS 3.1 [RFC 8599][Part 1 + 2]
7th of May 2020 Standards-based Push Notifications, inter-operating with any PN service provider! Read more...

Script driven SIP BAck-2-Back with OpenSIPs 3.2
07th of Jan 2021 The B2B support in OpenSIPS just got more powerful and simpler the use by migrating from XML to OpenSIPS routing script! Read more...

OpenSIPS Summit Distributed 2020- Speakers and Moderators
06th of Aug 2020 Some useful insights about the OpenSIPS Summit Distributed 2020 new format and new ideology ! Read more...

Call API first version has been released
11th of Jun 2020 The first version of the new Call API has been released. Check out how simple it is to control your calls through an API using this new cool project! Read more...

Cross dialog data accessing
18th of May 2020 Check out how easy is with OpenSIPS 3.1 to access the dialog and accounting data of another ongoing call! Read more...

SIP Push Notification with OpenSIPS 3.1 [RFC 8599][Part 1 + 2]
7th of May 2020 Standards-based Push Notifications, inter-operating with any PN service provider! Read more...

Back-to-Back & Clustering, a love story in OpenSIPS 3.1
30th of April 2020 The clustering and data replication in the Back-2-Back engine is a need for building High-Availability setups! Read more...

DFKS or the "Key to Synchronization"
28th of April 2020 Are you looking for a way to sync the settings of the Class 5 features between the SIP phones and the SIP Server?! Read more...

Minor release: OpenSIPS 2.4.6
11th of June 2019 Latest bug fixes for the OpenSIPS 2.4 LTS versions have been released! Read more...

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Call Center – an easier integration with OpenSIPS 3.1
21st of April 2020 Enhanced wrap-up time, call dissuading support, pre-call announcements, agent's events? All new additions in 3.1! Read more...

» OpenSIPS Bootcamp online training - 30 Nov - 11 Dec 2020
A ten days (40 hours) intensive and practical training, covering installation, configuration and administration on OpenSIPS 3.1. \\

The last release of the OpenSIPS 3.0 version is not available! Read more...

3.0.4 - stable release \\

Final release: OpenSIPS 2.2.8
11th of June 2019 The last version of OpenSIPS 2.2.8 has been released! Read more...

Stable minor releases: OpenSIPS 3.1.1, 3.0.4 and 2.4.9\\

» OpenSIPS 3.1.0 is out - 22th of July 2020
Let's welcome the 3.1.0 LTS stable release, focused on complex call crafting. Learn how you can do Call API, inter-call media exchange, Push Notification, STIR/SHAKEN and many others Class 5 adds-on.  \\

Stable release: OpenSIPS 3.0.0
29th of May 2019 Check out the newest major stable release, the OpenSIPS 3.0.0! Read more...

SIP Push Notification with OpenSIPS 3.1 [RFC 8599][Part 1]\\

Real-Time Rating and Cost Based Routing in OpenSIPS 3.1
07nd of April 2020 Looking for a quick and easy way of putting a price for a call, without relying on external applications? Here it is! Read more...

Bye-Bye Amsterdam, welcome Online - OpenSIPS Summit 2020 becomes OpenSIPS Summit Distributed 2020, a replacement online event \\

» OpenSIPS 3.1.0 is out - 27th of May 2020
Let's welcome the 3.1.0 LTS release, focused on complex call crafting. Learn how you can create and handle complex multi-call scenarios specific to Class 5 area.  \\

LTS release: OpenSIPS 3.1.0\\

Beta release: OpenSIPS 3.0.0
16th of April 2019 Check out the latest beta release of the new OpenSIPS 3.0.0! Read more...

Let's welcome the 3.1.0 beta release, focused on complex call crafting. Learn how you can create and handle complex multi-call scenarios specific to Class 5 area.  \\

» OpenSIPS Summit 2020 - 18th of March 2020
IMPORTANT! In the context of the COVID-19 pandemic, by the community poll, we decided to postpone for beginning of September 2020 \\

3.0.2 - stable release
2.4.7 - stable LTS release||

Dialog triggers, or how to control the calls from script
26th of May 2020 See how you can interact and control your calls directly from the OpenSIPS script, building more complex services, like PrePaid. Read more...

BLF reloaded, or a more accurate and detailed approach
02nd of April 2020 The BLF (or dialoginfo) support in OpenSIPS 3.1 is now able to properly handle parallel and serial call forking! Read more...

» Introducing OpenSIPS 3.1 - 19th of December 2019
Take a glimpse into the roadmap of upcoming 3.1 major release, focused on complex call crafting.  
» OpenSIPS Summit 2020 - 5th-8th of May, Amsterdam
Bridging people, bridging technologies, bridging experiences - a four days event for everyone to discover the VoIP & RTC knowledge in its most pure format \\

Minor release: OpenSIPS 2.4.5
7th of March 2019 The latest OpenSIPS 2.4 release is now available! Read more...

Enhanced media capabilities in OpenSIPS 3.1 LTS
26th of March 2020 Enhance you SIP proxied calls with complex media capabilities using the new Media Exchange module! Read more...

7th of May 2020 Check out how easy is with OpenSIPS 3.1 to access the dialog and accounting data of another ongoing call !

SIP Push Notification with OpenSIPS 3.1 [RFC 8599][Part 1]\\

Standards-based Push Notifications, interoperating with any PN service provider! Read more...

Quality-Based PSTN Routing in OpenSIPS 3.1 LTS (part 2)
17th of March 2020 A development update on the qrouting module after incorporating feedback and ideas from the community! Read more...

Call control using DTMF in OpenSIPS 3.1 LTS
12nd of March 2020 Check out how you can intercept DTMF codes in OpenSIPS 3.1. Read more...

Back-to-Back & Clustering, a love story in OpenSIPS 3.1"\\

30th of April 2020 The clustering and data replication in the Back-2-Back engine is a need for building High-Availability setups?! Read more...

28st of April 2020 Are you looking for a way to sync the settings of the Class 5 features between the SIP phones and the SIP Server?! Read more...

Quality-Based PSTN Routing in OpenSIPS 3.1 LTS (part 1)
13th of February 2020 Bolster the quality of your outbound PSTN calls by closely monitoring the quality of each of your SIP gateways Read more...

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28st of April 2020 Are you looking for a way to sync the settings of the Class 5 features between the SIP phones and the SIP Server?! https://blog.opensips.org/2020/04/28/dfks-or-the-key-to-synchronization//Read more...

21st of April 2020 Enhanced wrap-up time, call dissuading support, pre-call announcements, agent's events? All new additions in 3.1! https://blog.opensips.org/2020/04/21/call-center-an-easier-integration-with-opensips-3-1/Read more...

Shaken, not stirred
23th of January 2020 The story and the outcome of the STIR/SHAKEN implementation in OpenSIPS 3.1. Read more...

The OpenSIPS and OpenSSL journey
16th of January 2020 Check out the latest blog post about the latest OpenSSL issues in OpenSIPS Read more...

02nd of April 2020 Looking for a quick and easy way of putting a price for a call, without relying on external applications? Here it is! Read more...

OpenSIPS as SBC for MS Teams
16th of September 2019 How to configure OpenSIPS as SBC for terminating external calls for an MS Teams tenant! Read more...

The Module Function Interface Rework in OpenSIPS 3.0
5th of November 2019 OpenSIPS 3.0 ships with a more polished opensips.cfg syntax! Read more...

No more downtime after OpenSIPS 3.0 restarts
4th of April 2019 Check out how the new restart persistence feature can improve the time OpenSIPS 3.0 re-caches its data after a restart! Read more...

Containing Memory-Related Issues in an Easy Way With OpenSIPS 3.0
21st of March 2019 Troubleshooting bugs and writing code will be a lot more fun with OpenSIPS 3.0! Read more...

Bolster the quality of your outbound PSTN calls by closely monitoring the quality of each of your SIP gateways

Quality-Based PSTN Routing in OpenSIPS 3.1 LTS (2-part series)\\

Part 1, Part 2

New OpenSIPS CLI tool for managing OpenSIPS 3.0
13th of March 2019 A new interactive command line tool has been developed for the new OpenSIPS 3.0 MI interface! Read more...

Quality-Based PSTN Routing in OpenSIPS 3.1 LTS\\

Read more...

IMPORTANT! In the context of the COVID-19 pandemic, by the community poll, we decided the postpone for Aug/Sep 2020 (details to follow)  \\

Service redundancy in two steps with unified clustering in OpenSIPS 3.0
07th of March 2019 Redundancy means implementing an active – backup setup with full realtime synchronization and management between the two! Read more...

IMPORTANT! In the context of the COVID-19 pandemic, what's next for the Summit event? Help us to decide!  \\

Take a glimpse into the roadmap of upcoming 3.1 major release, focused on complex call crafting, and fill in our feature survey.  \\

1st of October 2018

Minor release: OpenSIPS 2.4.4
8th of November 2018 This year's holidays come with a new OpenSIPS 2.4 branch release that contains a lot of bug fixes! Read more...

Generic Preprocessing Support in OpenSIPS 3.0
05th of March 2019 Everything about the preprocessing support included in the upcoming 3.0 release. Read more...

Auto process scaling with OpenSIPS 3.0
25th of February 2019 A smart and easy to use feature that simply absolve you from any worries or concerns about proper scaling of your OpenSIPS! Read more...

A glimpse into the roadmap of upcoming 3.1 major release, focus on complex call crafting and fill in our feature survey.  \\

• 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)

» OpenSIPS Bootcamp - official OpenSIPS training
Your opinion matters! Pre-Register now and we will bring the training closer to you! \\

SMPP gatewaying with OpenSIPS 3.0
24th of January 2019 Calls and Messages, SIP and SMPP - how OpenSIPS can act as a bi-directional gateway between the two protocols! Read more...

» OpenSIPS 3.0 stable Release - 29th of May 2019
The stable release of the major OpenSIPS 3.0 is ready for you. Are you ready for it?? \\

Minor release: OpenSIPS 2.4.3
8th of November 2018 Latest OpenSIPS 2.4 branch release consists of important bug fixes! Read more...

Call for Papers for OpenSIPS Summit 2019
05th of December 2018 The Call for Papers for OpenSIPS Summit 2019 is open. Share with the community and submit your paper now! Read more...

2.4.5 - stable LTS release||

Stable release: OpenSIPS 3.0.0
29th of May 2019 Check out the newest major stable release, the OpenSIPS 3.0.0! Read more...

Beta release: OpenSIPS 3.0.0
16th of April 2019 Check out the latest beta release of the new OpenSIPS 3.0.0! Read more...

Minor release: OpenSIPS 2.4.5
7th of March 2019 The latest OpenSIPS 2.4 release is now available! Read more...

Minor release: OpenSIPS 2.4.4
8th of November 2018 This year's holidays come with a new OpenSIPS 2.4 branch release that contains a lot of bug fixes! Read more...

Minor release: OpenSIPS 2.4.3\\

Latest OpenSIPS 2.4 branch release consists of important bug fixes! Read more...

Minor release: OpenSIPS 2.3.6
14th of August 2018 Last version of the 2.3 branch has been released! Read more...

Minor release: OpenSIPS 2.4.2, and 2.3.5
14th of August 2018 Some even more stable OpenSIPS versions, so upgrade your installs as soon as you can! Read more...

Four full days of just VoIP & RTC knowledge in its most pure format. Register now!
Conference, Open Discussions, Design Clinics, Workshops and Trainings! \\

2.4.5 - stable LTS release
2.2.7 - stable LTS release||

Minor release: OpenSIPS 2.4.1, 2.3.4 and 2.2.7
24th of May 2018 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

OpenSIPS Control Panel 8.2.4 released
01st of November 2018 OpenSIPS CP 8.2.4 matching OpenSIPS 2.4 is now ready for usage! Better looking, more secure, more powerful. Read more...

Troubleshooting bug and writing code will be a lot more fun with OpenSIPS 3.0! Read more...

Clustered SIP User Location: The “Full Sharing” Topology
13th of September 2018 What are the available options for Full Sharing and how to properly configure them. Read more...

\\

» OpenSIPS Summit Call For Paper - 5th of December 2018
Share your wisdom and experience with the world during OpenSIPS Summit 2019. \\

SIP bridging over multiple interfaces
4th of September 2018 There are scenarios where you need OpenSIPS to route SIP traffic across more than one IP interface. So, how do you do it in the right way? Read more...

A Better Way of Saying “Thank You!” to OpenSIPS Contributors
17th of August 2018 As time goes by, code, pull requests and patches for an open-source project will naturally keep arriving in a steady stream. How to we keep track of everything?. Read more...

10 years of the OpenSIPS Bootcamp
31th of July 2018 Time is flying when you're having good time. Last week we celebrated 10 year of fun under the name of OpenSIPS. Read more...

\\

Minor releases: OpenSIPS 2.3.3 and 2.2.6
17th of Jan 2018 After several months of bug fixes, two new releases are now out: OpenSIPS 2.3.3 and 2.2.6! Read more...

Everything about the generic preprocessing support in the upcoming 3.0 release. \\

» OpenSIPS Summit Call For Paper - 5th of December 2018
Share your wisdom and experience with the world during OpenSIPS Summit 2019. \\

Call for Papers for OpenSIPS Summit 2019
05th of December 2018 The Call for Papers for OpenSIPS Summit 2019 is open. Share with the community and submit your paper now! Read more...

OpenSIPS Control Panel 8.2.4 released
01st of November 2018 OpenSIPS CP 8.2.4 matching OpenSIPS 2.4 is now ready for usage! Better looking, more secure, more powerful. Read more...

Clustered SIP User Location: The “Full Sharing” Topology
13th of September 2018 What are the available options for Full Sharing and how to properly configure them. Read more...

SIP bridging over multiple interfaces
4th of September 2018 There are scenarios where you need OpenSIPS to route SIP traffic across more than one IP interface. So, how do you do it in the right way? Read more...

A Better Way of Saying “Thank You!” to OpenSIPS Contributors
17th of August 2018 As time goes by, code, pull requests and patches for an open-source project will naturally keep arriving in a steady stream. How to we keep track of everything?. Read more...

10 years of the OpenSIPS Bootcamp
31th of July 2018 Time is flying when you're having good time. Last week we celebrated 10 year of fun under the name of OpenSIPS. Read more...

10 years of OpenSIPS and more
9th of August 2018 The first OpenSIPS Bootcamp was held in Miami, 10 years ago. Since then, many things changed. Read more...

Handling SIP Redirect Requests in realtime
5th of July 2018 The SIP redirect mechanism is a simple and straight forward one - the originally contacted destination indicates, via a 3xx reply, that a different set of destinations should be contacted. Read more...

Four full days of just VoIP & RTC knowledge in its most pure format.\\

Minor release: OpenSIPS 2.4.3\\

Latest OpenSIPS 2.4 branch release consists of important bug fixes! Read more...

Major release: OpenSIPS 2.4.0 beta
28th of Mar 2018 A new major step in OpenSIPS evolution - the 2.4 branch is now ready with the OpenSIPS 2.4.0 beta released! Read more...

A Better Way of Saying “Thank You!” to OpenSIPS Contributors
q7th of August 2018 As time goes by, code, pull requests and patches for an open-source project will naturally keep arriving in a steady stream. How to we keep track of everything?. Read more...

The first OpenSIPS Bootcamp was held in Miami, 10 years ago. Since then, many things changed. . Read more...

Clustering ongoing calls with OpenSIPS 2.4
23rd of March 2018 Use dialog clustering to achieve High Availability and Load Balancing for your calls in setups as active-backup, active-active or anycast based. Read more...

Full Anycast support in OpenSIPS 2.4
21th of March 2018 Learn how you can do a full anycast scenario using OpenSIPS 2.4 Read more...

Clustering Presence Services with OpenSIPS 2.4
27th of March 2018 Use presence clustering support to distribute and secure your data by implementing High Availability, Load Balancing or Federating scenarios. Read more...

Clustering ongoing calls with OpenSIPS 2.4
23rd of March 2018 Use dialog clustering to achieve High Availability and Load Balancing for your calls in setups as active-backup, active-active or anycast based. Read more...

Full Anycast support in OpenSIPS 2.4
21th of March 2018 Learn how you can do a full anycast scenario using OpenSIPS 2.4 Read more...

Scaling, Distributing and Partitioning Registrations with OpenSIPS 2.4
15th of March 2018 Everything about the upcoming usrloc change-storm in OpenSIPS 2.4 Read more...

The new Clustering Engine of OpenSIPS 2.4
13th of March 2018 Check the enhancements done in the clustering engine in OpenSIPS 2.4 - there are some interesting new concepts that are used for more complex clustering scenarios! Read more...

Two training sessions, two projects, one event – OpenSIPS Summit 2018
6th of February 2018 Along the OpenSIPS training, Amsterdam will host the first certified FreeSWITCH training in Europe ever. Read more...

Clustering Presence Services with OpenSIPS 2.4
27th of March 2018 Use presence clustering support to distribute and secure your data by implementing High Availability, Load Balancing or Federating scenarios. Read more...

Clustering ongoing calls with OpenSIPS 2.4
23rd of March 2018 Use dialog clustering to achieve High Availability and Load Balancing for your calls in setups as active-backup, active-active or anycast based. Read more...

Full Anycast support in OpenSIPS 2.4
21th of March 2018 Learn how you can do a full anycast scenario using OpenSIPS 2.4 Read more...

Scaling, Distributing and Partitioning Registrations with OpenSIPS 2.4
15th of March 2018 Everything about the upcoming usrloc change-storm in OpenSIPS 2.4 Read more...

The new Clustering Engine of OpenSIPS 2.4
13th of March 2018 Check the enhancements done in the clustering engine in OpenSIPS 2.4 - there are some interesting new concepts that are used for more complex clustering scenarios! Read more...

Announcing the Speakers and Papers for OpenSIPS Summit 2018
16th of February 2018 The Call for Papers is ended, resulting in 33 speakers and 29 exiting papers covering different topics. Check the list and join the Summit! Read more...

How To Script Advanced FreeSWITCH Integrations with OpenSIPS 2.4
17th of January 2018 Latest FreeSWITCH integration enhancements--what they are and what we can build with them Read more...

\\

» OpenSIPS Control Panel 8.2.4 - 1st of November 2018
The Control Panel web interface matching OpenSIPS 2.4 is now released. \\

» OpenSIPS 2.4 LTS - 30th of April 2018
The latest stable LTS release for the 2.4 major version, code-named The Cluster Maker. \\

» The OpenSIPS Summit - 1st - 4th of May 2018, in Amsterdam, NL
It happened and it was great. Check papers and vids! \\

Minor release: OpenSIPS 2.3.2
31st of Aug 2017 A new OpenSIPS 2.3 version featuring major fixes has been released! Read more...

The Control Panel we interfacing matching OpenSIPS 2.4 is now released. \\

Four days of presentations, demos, round tables and design clinics for and by the FOSS developers and community from various VoIP & RTC projects. Check papers and vids! \\

Last version of the 2.3.6 branch has been released! Read more...

2.3.5 - stable release\\

Minor release: OpenSIPS 2.4.2, and 2.3.5\\

Some even more stable OpenSIPS versions, so upgrade your installs as soon as you can! Read more...

Minor release: OpenSIPS 2.3.1 and 2.2.5
5th of Jul 2017 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

Minor release: OpenSIPS 2.2.4 and 1.11.11
18th of May 2017 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

Four days of presentations, demos, round tables and design clinics for and by the FOSS developers and community from various VoIP & RTC projects. Check our speakers and papers! 
 \\

» Trainings for FreeSWITCH & OpenSIPS @ Summit - 4st of May 2018
Don't miss the first certified FreeSWITCH training ever run in Europe. 
||  \\

5th of Jul 2017

After several months of bug fixes, two new releases are nnow out: OpenSIPS 2.3.3 and 2.2.6! Read more...

Major release: OpenSIPS 2.3.0
26th of Apr 2017 After several fixes and improvements, we've finally released the latest OpenSIPS 2.3 stable version! Read more...

» Introducing OpenSIPS 2.4 - 1st of November 2017
A glimpse into the roadmap of upcoming 2.4 major release, code-named the SIP clusterer. \\

Major release: OpenSIPS 2.3.0 beta
16th of Mar 2017 A new major step in OpenSIPS evolution - the 2.3 branch is now ready with the OpenSIPS 2.3.0 beta released! Read more...

21th of March 2018

Audio Recording and Speech Detection Experiments with OpenSIPS
16th of February 2018 OpenSIPS and RTPengine can be used together to easily build some really cool playground demos. Read more...

Full Anycast support in OpenSIPS 2.4\\

Learn how you can do a full anycast scenario using OpenSIPS 2.4 Read more...

Deep Dive into the OpenSIPS Statistics Support
20th of November 2017 Learn about concepts such as architecture and advanced uses for the OpenSIPS statistics Read more...

Call Recording in OpenSIPS 2.4 using SIPREC
9th of Nov 2017 The ability to record the calls that go through your platform is gradually shifting from being a feature to being a necessity. Using the new SIPREC module in OpenSIPS 2.4 you can do call recording to an external recorder in a standard manner! Read more...

The new Clustering Engine of OpenSIPS 2.4
13th of March 2018 Check the enhancements done in the clustering engine in OpenSIPS 2.4 - there are some interesting new concepts that are used for more complex clustering scenarios! Read more...

Check the enhancements done in the clustering engine in OpenSIPS 2.4 - there are some interesting new concepts that are used for more complex clustering scenarios! Read more...

Running OpenSIPS in the Cloud
25th of Oct 2017 Cloud computing is a more and more viable option for running and providing SIP services. The question is how compatible are the SIP services with the Cloud environment ? . Read more...

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Four days of presentations, demos, round tables and design clinics for and by the FOSS developers and community from various VoIP & RTC projects. Check speakers and papers! \\

» The OpenSIPS Summit - 1st - 4th of May 2018, in Amsterdam, NL
Four days of presentations, demos, round tables, design clinics, training and social events, for an by the FOSS developers and community from various VoIP & RTC projects. 
» OpenSIPS wins the Google Open Source Peer Bonus award - 9th October 2017
OpenSIPS is recognized as part of the open source ecosystem Google depends on.||  \\

OpenSIPS as HEP Proxy/Switch
12th of Oct 2017 HEP Switching – how to access, manipulate and proxy steams of HEP packets in order to support heavy-load and complex capturing scenarios. Read more...

6th of February 2018 OpenSIPS and RTPengine can be used together to easily build some really cool feature. Read more...

Two training sessions, two projects, one event – OpenSIPS Summit 2018\\

Along the OpenSIPS training, Amsterdam will host the first certified FreeSWITCH training in Europe ever. Read more...

Call Recording using OpenSIPS and SIPREC!
29th of Sep 2017 Using the new SIPREC module you can do audio call recording in a non-intrusive way, by using an external/passive SIP recorder. Read more...

Troubleshooting OpenSIPS script
20th of September 2017 Scripting OpenSIPS means doing programming. And programing comes together with troubleshooting and debugging. So how can you do this with OpenSIPS? Read more...

OpenSIPS Control Panel and Homer Integration
2nd of August 2017 OpenSIPS and Homer can integration at different levels - at data level and....at web level. Read more...

Minor releases: OpenSIPS 2.2.3 and 1.11.10
23rd of Feb 2017 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

OpenSIPS Control Panel 7.2.3 is released
5th of July 2017 One more dev cycle and OpenSIPS Control Panel 7.2.3 corresponding OpenSIPS 2.3 is available and ready to be used. Read more...

Four days of presentations, demos, round tables, design clinics, training and social events. An event to meet FOSS developers and community from various VoIP & RTC projects, to share experience and comments. \\

OpenSIPS @ ClueCon 2k17 - training and more
3rd of July 2017 One more year, one more time joining ClueCon with presentations and advanced training on OpenSIPS and FreeSWITCH integration. Read more...

Traffic balancing – the insertion into the SIP flow
28th of June 2017 After picking the right balancing logic, it is important to decide how the balancer inserts itself into the SIP flow. Read more...