Introducing VideoSDK Warm Transfer: Escalate to a Human - Briefed, Before They Take the Call

VideoSDK Warm Transfer enables AI voice agents to escalate ongoing SIP calls to human supervisors without forcing callers to repeat their issue, unlike basic Call Transfer, which forwards calls directly without context. The feature places the caller on hold, creates a private consultation room, dials the supervisor, generates an LLM-based conversation summary, briefs the supervisor, and then connects the caller after acknowledgment, with the agent leaving once the transfer is complete. Agents can initiate the process through a function tool using `session.warm_transfer()`, configure SIP routing and caller ID, and monitor state-machine phases through event handlers for logging or analytics. Developers can customize the summary model, briefing prompt, and consultation pipeline, while the returned result includes transfer status, terminal phase, IDs, generated summary, and any error information. The process is designed to continue cleanly even if the initiating tool is cancelled, and is intended for cases such as manager escalations or specialist support where the receiving person needs context before speaking with the caller.

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