kamailio-mqtt-modules - 5.6.3-2 main

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.
.
MQTT module allows bidirectional publish/subscribe communication by
connecting Kamailio to a MQTT Broker.
.
Messages can be published from any point in the routing script. Also
the subscriptions can be fully controlled by scripting commands.