October 17, 2019: Kamailio v5.3.0 is out – a new major release, bringing new features and improvements added during nine months of development and about two months of testing.

In short, this major release brings 6 new modules and enhancements to more than 80 existing modules, plus components of the core and internal libraries as well as optimizations for embedded interpreters (KEMI framework). Detailed release notes are available at:

This is the fourth major release in the series of 5.x.y versions. Besides adding plenty of new features, a lot of development was directed to add more flexibility to run on containerised deployments, next generation emergency services, bring new features to load balancer, dialog tracking or remote registrations and to make available more functions to KEMI interface.

Enjoy SIP routing in a secure, flexible and easier way with Kamailio v5.3.0!

Thank you for flying Kamailio and looking forward to meeting you at Kamailio World Conference 2020!