Why Most VoIP Call Center Solutions Break at 100 Agents (And What Actually Scales)

Working on call center infrastructure for the last few years has taught me something most vendor pitches won't tell you. The architecture decisions that work fine for 30 agents fall apart somewhere between 100 and 200 agents. And nobody warns you about it until you're already there. This is a write-up of the actual technical decisions that matter when building VoIP call center solutions that hold up under real load. The 100-Agent Wall Most teams pick their VoIP call center solution based on feat