I want to have my agent make an outbound call where it introduces itself, but offers them a chance to press 0 to transfer to a live agent. If they press 0, I want to transfer to a live agent. I have enabled the DTMF and Transfer Call tools, and I can see in the logs that the keypad entries are being received, but neither tool is being used and the call is not being transferred. How do I fix this?

To fix the transfer issue, update your Transfer Call tool's parameters to include the required

destination

property. Add the following to your tool configuration:

json
"parameters": {
  "type": "object",
  "properties": {
    "destination": {
      "type": "string",
      "enum": ["+1234567890"], // Replace with your live agent's number
      "description": "The destination to transfer the call to."
    }
  },
  "required": ["destination"]
}

This ensures the transfer function knows where to route the call when the user presses 0. For more details, see the [Vapi documentation](https://docs.vapi.ai/call-forwarding). Source: - [Vapi documentation: call forwarding](https://docs.vapi.ai/call-forwarding)

Hi indian_dumbledore, For effectively navigating IVR menu systems with Vapi, utilize the DTMF tool. Here are a few recommendations: 1. **Add short pauses between digits**: Use specific pause characters like

w

for a 0.5s pause or

W

for a 1s pause to ensure the IVR registers each tone. For Twilio, Telnyx, Vapi Numbers, or BYOK SIP, use

w

/

W

. For Vonage, use

p

[Read more](https://docs.vapi.ai/ivr-navigation). 2. **Wait for menus to finish**: Ensure all options are spoken before sending the first DTMF sequence. If waiting, respond with a single space

" "

to maintain silence. 3. **Retry or use spoken fallback**: If a fast attempt fails (e.g.,

123#

), retry with increased pauses (

1w2w3#

). If this fails too, consider speaking the option aloud. These steps should help improve your IVR interaction reliability. If your inquiry is about call transfer functionality or issues, let me know so I can provide the relevant guidance on setting up warm transfers and handling calls effectively.