MSRP Gateway

The majority of SIP User Agents still only support the MESSAGE method for providing Instant Messaging. However, modern Unified Communications(UC) ecosystems and more advanced messaging services, such as RCS(Rich Communication Services), are built on top of Session Mode messaging, which uses the MSRP protocol. With the addition of the new msrp_gateway module, OpenSIPS 3.3 introduces … Continue reading MSRP Gateway

OpenSIPS Contact Center, or blending chats and calls

OpenSIPS has the Call Center module for a while, a module that allows queuing and dispatching (to agents) of RTP based calls (audio or video). OpenSIPS 3.3 focused on instant messaging, mainly session based messaging (or chat) in the context of IMS and Unified Communication (UC). And speaking of UC, the addition of chat (MSRP … Continue reading OpenSIPS Contact Center, or blending chats and calls

Using the Diameter Client Capability of OpenSIPS 3.3

In the previous iteration, OpenSIPS 3.2 introduced a first version of the support for Diameter protocol peering by leveraging the freeDiameter project and its excellent C libraries. Building on top of this, OpenSIPS 3.3 now offers a way of building and sending arbitrary Diameter protocol requests, from the opensips.cfg script. This brief post will teach … Continue reading Using the Diameter Client Capability of OpenSIPS 3.3

The MSRP eco-system in OpenSIPS 3.3

Yes, the OpenSIPS 3.3 focuses on messaging and MSRP is a key element when talking about messaging/chat sessions. Packing messages into sessions enables the creation of advanced chatting / conferencing services in the RCS and UC world. The MSRP stack The MSRP implementation in OpenSIPS 3.3 comes as complex stack, covering from the lowest protocol … Continue reading The MSRP eco-system in OpenSIPS 3.3

OpenSIPS Security Audit, facts and results

Almost an year ago we were boiling the idea of starting a professional security audit over the freshly released OpenSIPS 3.2 . What were the reasons for doing this and how the audit actually took shape, as targets, methodology and deliverables, is described in this original manifest. Of course, nothing would have been possible without … Continue reading OpenSIPS Security Audit, facts and results

Fine-Grained TCP Configuration Using the “tcp_mgm” Module

OpenSIPS 3.3 introduces a new module which offers full control over the configuration of individual TCP connections. From filtering by the employed TCP-based protocol (e.g. BIN, TLS, MSRP, SMPP, etc.), all the way down to specific combinations of remote and local IPv4 or IPv6 addresses, OpenSIPS platform developers now have the ability to cherry-pick and … Continue reading Fine-Grained TCP Configuration Using the “tcp_mgm” Module

OpenSIPS 3.3 – Messaging in the IMS and UC ecosystems

SIP is more than voice and video, it is also instant messaging and presence. Even if the traditional SIP services are more voice focused, the Instant Messaging (IM) gained a lot if importance and traction in the context of IP Multimedia Subsystem (IMS) and Unified Communications (UC). Messaging in IMS Thanks to the large adoption … Continue reading OpenSIPS 3.3 – Messaging in the IMS and UC ecosystems

Running MI commands from script in OpenSIPS 3.2

During this year's annually OpenSIPS Feature Survey, the poll results for the new OpenSIPS 3.2 reflected an emergent need for people to be able to run MI alike commands directly from the script. Initially, we were a bit reluctant from developing this feature due to the fact that (historically speaking), OpenSIPS's Management Interface has been … Continue reading Running MI commands from script in OpenSIPS 3.2