Jesus
11/25/2025, 11:52 AMVapi Support Bot
11/25/2025, 11:53 AMmaxDurationSeconds property under transferAssistant. For example:
json
"transferPlan": {
"mode": "warm-transfer-experimental",
"transferAssistant": {
"firstMessage": "Hello, I have a customer on the line. Are you available to take this call?",
"maxDurationSeconds": 120, // Timeout in seconds
"silenceTimeoutSeconds": 30
}
}
Note: This only works with Twilio numbers. Double-check that your configuration matches this structure and that you are using a supported provider.
For more details, see the [Assistant-based warm transfer documentation](https://docs.vapi.ai/calls/assistant-based-warm-transfer).
Source:
- [Assistant-based warm transfer documentation](https://docs.vapi.ai/calls/assistant-based-warm-transfer)