Razvan Crainea

Learn how to provide enhanced media capabilities (such as music on hold playbacks, PIN prompts, barge-in services, etc) to calls that are passing through OpenSIPS SIP Proxy.

SIP proxies, by definition, lack the ability to do any media handling, due to the fact that they only stand in the path of call signalling, but not call media (as opposed to a B2B media server, which behaves as an endpoint for both media and signalling). So, how do you keep your OpenSPIS as a performant SIP proxy, but also enhance your SIP service with extra media capabilities? Starting version 3.1, OpenSIPS provides the means of controlling and changing the RTP streams of the ongoing calls without altering the signalling path of the call (i.e. without transferring the call to a B2B media server), as the calls should be easily resumed to its initial state.

A set of examples where manipulating media in an ongoing call can be useful, while preserving its signalling path, are:

• inject an audio/video announcement

• playback music on hold files

• fork media for call recording, or for call listening

• inject media for call whispering

• temporary barge in an ongoing call

All these features, and many others can be implemented by simply mixing the participants of multiple calls. This presentation describes how all these features can be implemented in OpenSIPS 3.1 using the new Media Exchange module, without changing the SIP signalling path, but only by exchanging SDP bodies between different SIP sessions.

This talk will present the challenges encountered when building highly available, multi-node SIP platforms and how they are solved using a modern OpenSIPS release.

For those aiming to build a high capacity SIP service involving clusterized nodes running in a unified manner, this is a must-attend talk! During the presentation, we will enumerate the major types of issues that might pop up when architecting multiple SIP proxy instance setups and how OpenSIPS completely shatters them, making the management of such platforms a piece of cake!

An in-depth view of the feature set of the upcoming OpenSIPS 2.4 clustering support (release due March 2018!). Built with targets in mind such as flexibility, robustness, stability and ease-of-use while also being easy to provision and reuse by higher-level modules, the latest OpenSIPS cluster is better than ever!

Join this talk if you want to get a good understanding on what the OpenSIPS clustering support is and how it works. Starting with the architecture and requirements of the communications system as a whole, the presentation will continue with the runtime behavior for the cluster. This will teach you what to expect from an OpenSIPS cluster, how to dynamically resize it and how it behaves in the eventuality of cross-site network link failures.

In the second half, we will dissect a natural use case for the clustering support: a distributed SIP user location service. There are a couple of interesting problems associated with this type of service (NAT traversal, SIP contact pinging, etc.), both of which become a lot more straight-forward to solve using an underlying clustering engine.

This talk presents how OpenSIPS can enhance your VoIP capabilities by using it as an Edge Proxy/SBC.

During this presentations you will find out how OpenSIPS can act as an SBC in front of your VoIP platform that can solve all of your scalability issues.