A Ruby-based warm transfer system using Sinatra has been implemented. The system allows for real-time transfers between agents in a call, eliminating disconnections during support calls. It uses Twilio's Voice Web Client to connect and manage the agents, as well as TwiML to provide instructions to clients on how to join conferences. The system also handles warm transfers between agents, allowing them to seamlessly take over calls from each other. With this implementation, developers can create a more efficient and effective support experience for their customers.