Thanks for your quick answer. MIGRATION : Regarding migration 4.2 to 5.2 I will check line by line and try to fix it. My most issue is the database modules changed and to adapt is taking time. DEV : Regarding the Dev environment, I am trying to use Go (for cross-platform) and kafka connector to get all the events through Database and push notification to my automation then if Kamailio upgrade or change any structure, I will not be impacted. Like this : KAMAILIO 5.2 -> DB MONGODB NoSQL -> Connector -> Transforms -> Converter -> Kafka Kafka -> Converter -> Transforms -> Connector -> DB MONGODB NoSQL -> KAMAILIO 5.2 I am not sure but if MongoDB is supported by Kamailio 5.2 and if any script is available to install it? But I have seen into the website at : https://www.kamailio.org/w/features/ External Interaction via - RPC control interface – via XMLRPC, JSONRPC, UDP or TCP Extensibility APIs Java SIP Servlet Application Interface – write Java SIP Servlets to

your VoIP services and integrate with web services Lua Programming Interface JavaScript Programming Interface Managed Code (C#) Programming Interface Python Programming Interface Java Programming Interface Generic Event API via TCP connections But I can't find any link to API or other.