VICIdial Kamailio Load Balancing for 100+ Agent Call Centers

When your VICIdial deployment crosses the 100-agent threshold, a single Asterisk server stops being viable. Not because Asterisk cannot handle the call volume -- a well-tuned Asterisk box can manage 300+ concurrent calls -- but because you lose all fault tolerance. One kernel panic, one runaway process, one failed disk, and your entire operation goes silent. The answer is horizontal scaling: multiple Asterisk servers behind a SIP load balancer. And in the VICIdial world, that load balancer is Kamailio. This guide covers why Kamailio is the right tool, how to configure its dispatcher module for VICIdial, how to implement health probing and automatic server removal, and how to scale from a single server to a 10-server cluster. Every configuration example has been tested in production VICIdial environments running 100-500 agents. Why You Need Kamailio at Scale VICIdial's built-in multi-server support handles database replication and web interface distribution well. But for SIP traffic --