Ok! Thanks ! Can you be more specific or provide an example of the sintaxis on how can I use it ? Thank you so much for your help !

Use a webhook to track Vapi call status events in real-time, maintain an activeCalls counter, and automatically trigger new calls via the API when activeCalls drops below your concurrency limit default is 10, ensuring optimal line usage. https://mahimairaja.medium.com/realtime-call-control-vapi-fastapi-fb499d75fbb0