Install kamailio-tls-modules by entering the following commands in the terminal:
sudo apt update sudo apt install kamailio-tls-modules
Description:
TLS support for the Kamailio SIP server (authentication, transport)
Kamailio is a very fast and flexible SIP (RFC3261) server. Written entirely in C, Kamailio can handle thousands calls per second even on low-budget hardware. . This package provides TLS support for encrypted and authenticated SIP connections as well as generic TLS support for many Kamailio modules.
Homepage: http://www.kamailio.org/
Version: 5.1.2-1ubuntu2
Section: universe/net