Sunday, March 27, 2011

Kamailio at Google Summer of Code 2011

For the second year, Kamailio project has been selected in Google Summer of Code program, now for year 2011, within Jitsi organization (former SIP Communicator project).

This time the participation is targeting the implementation of a SIP-to-Jingle gateway. Jingle is the voice extension of XMPP. At this moment, Kamailio includes a SIP-to-XMPP gateway for Instant Messaging and Presence, therefore the GSoC project is looking to extend it for voice.

Read more about the project and, if you are a student and interested to implement the project, see how to apply at:

Friday, March 18, 2011

SIP Communicator Renamed to Jitsi

Here is a short news just to inform our community that the SIP Communicator SIP softphone was renamed to Jitsi. There are several pages mentioning Kamailio and SIP Communicator out there, among them our participation to Google Summer of Code 2010 as well as the full SIP SIMPLE Presence configuration with XCAP:

To fetch the latest version of Jitsi SIP softphone, just go to:

Note: Kamailio has applied for the second year for participation to GSoC, now for the 2011 edition, again together with Jitsi project. Stay tuned for updates on this topic!

Tuesday, March 15, 2011

SEMS 1.4.0 Released

SIP Express Media Server (aka SEMS) version 1.4.0 has been released. SEMS is a high performance media and application server for SIP based VoIP networks started at the same research institute with SIP Express Router (SER), thus having same origins as Kamailio as well as sharing several developers. SEMS interoperability with Kamailio is therefore guaranteed, being the first option for a SIP B2BUA whenever is required in a Kamailio deployment.

This release of SEMS features a powerful Session Border Controller (SBC) module. From completely transparent B2BUA to customized URI/From/To, strictly filtered (messages, headers, codecs) with RTP anchoring, Session Timer enforcement, prepaid and call timer, the SBC facilitates interconnect and core routing in a simple and secure way. Thanks to the new multihoming support, SEMS can now be employed at the border of the networks.

This addition also allows to overcome the bottleneck of one NIC – giving the possibility to fully exploit SEMS’ great performance. In the app development area, the DSM language has matured to become a viable candidate also for implementing complex application logic, thanks to language constructs like for, if and functions. SEMS can be downloaded in source from its ftp site at:

Thursday, March 10, 2011

Podcast and article on Techistan about Kamailio

From its website, Techistan, an online technology magazine, defines itself as: “Techistan is a time and place where peaceful debate and discourse on technology rule. It is the gathering of the brightest in the world, Techistan and you.”

Courtesy of Suzanne Bowen (DIDx) , Techistan has published an article about Kamailio, along with a podcast with Daniel-Constantin Mierla, co-founder of Kamailio project:

The discussion begins with the origins of the project, that started back in 2001 as SIP Express Router (SER), forked in 2005 to OpenSER, then it was renamed in 2008 to Kamailio. Shortly after the rename, Kamailio and SER projects started the work of integration, at this time being again same software application – development being hosted at

The year 2010 is summarized during the podcast (see also Kamailio 2010 Awards), marking the release of two major versions based on the new architecture, v3.0.x and 3.1.x – development done together by the two teams of Kamailio and SER:

Today’s world wide hot topics such as reach communication services or security were debated, underlining Kamailio’s advanced implementations for such services, from a SIP SIMPLE presence server with RLS and embedded XCAP server to asynchronous TLS communication able to handle several ten thousands active connections on a single instance running on a laptop.

The presentation approached the recently launched SIP:Provider CE project, an out-of-the-box VoIP servicing platform with Kamailio for SIP routing and management interfaces for administration, monitoring and user portal. It ended with a look at the future, the current work to integrate IMS extensions and where we will be in real time communications in few years.

Tuesday, March 1, 2011

Joint venture on Kamailio to tackle big vendors in telco market

Asipto and Sipwise, two companies involved in the development and management of Kamailio project, announced today the joint venture to create complete and competitive IP Telephony product using Kamailio as core component for SIP routing.

The venture focuses on recently announced SIP:Provider platform targeting IP telephony operators, delivered as out of the box system with features such us authentication, authorization, NAT traversal, call forwarding, call baring, voice mail, web interfaces for monitoring, administration and user portal, post paid billing, interconnection for PSTN with least cost routing, a.s.o.

SIP:Provider CE version is provided free of charge, under open source license, you can install it easily via Debian packages or images for VirtualBox and VMWare. The target is to fill the gab between raw components such as Kamailio and full operational IP telephony system, that one can download, install and then it is ready to go to operate telephony services, without messing to put together various applications and having to understand SIP.

SIP:Provider Pro Edition adds telecom specific SLA along with extra features such as prepaid billing, high availability and redundancy.

You can read the announcement here.