Kamailio

Kamailio is a high-performance open-source SIP server that enables real-time communication services such as VoIP, messaging, and presence. It is designed to handle large volumes of SIP traffic efficiently, making it ideal for telecom operators, enterprises, and developers building scalable communication platforms.

The solution supports common SIP server workflows including user registration, call routing, load balancing, authentication, and database integration. It is widely used for VoIP infrastructure, IMS/NGN deployments, SIP routing, and communication service platforms.

Features of Kamailio:

• High-performance SIP proxy and registrar server.
• User registration and location management.
• Advanced SIP routing and load balancing capabilities.
• Authentication and authorization support.
• Database integration (MySQL, MariaDB, PostgreSQL).
• Scalable architecture suitable for carrier-grade deployments.
• Support for TCP, UDP, TLS, and WebSocket transports.

Usage instructions:

$ sudo su
$ cd /opt/kamailio-6.1.4
$ /usr/local/sbin/kamailio -V

Disclaimer: Kamailio is provided “as is” under applicable open-source licenses. Users are responsible for proper configuration, network security, firewall rules, and validation of SIP traffic. This solution is best suited for building, managing, and scaling real-time communication systems in both development and production environments.