https://vapi.ai/ logo
Join Discord
Powered by
Transfer Custom Data With Call
# support
d
When I am transferring the call using control url to another detination is it possible to pass some custom data values with it @Shubham Bajaj Urgent help @Vapi Support Bot
v
You can pass a message or summary to the destination during a call transfer using the 
content
field in your control URL request. Here’s an example:
Copy code
json
{
  "type": "transfer",
  "destination": {
    "type": "number",
    "number": "+1234567890"
  },
  "content": "Transferring your call now. Custom info: Order #12345"
}
Note: Only documented fields like 
content
are supported for passing custom data in this way. For more details, see the [Vapi call control documentation](https://docs.vapi.ai/calls/call-features). Source: - [Vapi call control documentation](https://docs.vapi.ai/calls/call-features)
c
Hi Dev, To utilize the new 
transferCompleteAudioUrl
property in 
TransferPlan
while in 
warm-transfer-experimental
mode, you can specify a custom audio file URL to play after the transfer is complete. Here's an example of how to configure it:
Copy code
json
{
  "type": "transferCall",
  "function": {
    "name": "salesTransferAssistant"
  },
  "destinations": [
    {
      "type": "number",
      "number": "+14155551234",
      "transferPlan": {
        "mode": "warm-transfer-experimental",
        "transferCompleteAudioUrl": "https://your-audio-file-url.com/complete_sound.mp3",
        "transferAssistant": {
          "firstMessage": "Hello, I have a customer on the line. Are you available to take this call?",
          "firstMessageMode": "assistant-speaks-first",
          "maxDurationSeconds": 120,
          "silenceTimeoutSeconds": 30,
          "model": {
            "provider": "openai",
            "model": "gpt-4o",
            "messages": [
              {
                "role": "system",
                "content": "You are a transfer assistant designed to facilitate call transfers between a customer and an operator."
              }
            ]
          }
        }
      }
    }
  ],
  "messages": [
    {
      "type": "request-start",
      "content": "I'll transfer you to our sales team. Please hold for a moment."
    }
  ]
}
This configuration will handle a transfer to a specific number and play your custom audio file once the transfer is complete. You can find more information on configuring warm transfers [here](https://docs.vapi.ai/calls/assistant-based-warm-transfer).
d
Aniah I want to pass custom data when transfer call this will not say it just see in message
Please help its very urgent
@User @User @Kyle
But this message is spoken I want that it remain as message which person can see.
Any help @Vapi Support Bot
v
Currently, Vapi does not support passing custom data with a call transfer that is only visible as metadata and not spoken. All supported fields like 
content
or 
message
will be delivered audibly to the recipient. If you need to associate custom data with a transfer, consider storing it in your own backend and referencing it by call/session ID, as there is no built-in silent metadata field in the transfer payload. For reference, here is the documented transfer payload (note: 
content
will be spoken):
Copy code
json
{
  "type": "transfer",
  "destination": { "type": "number", "number": "+1234567890" },
  "content": "Transferring your call now."
}
See [Vapi call control documentation](https://docs.vapi.ai/calls/call-features) for details. Sources: - [Vapi call control documentation](https://docs.vapi.ai/calls/call-features) - [Vapi call forwarding documentation](https://docs.vapi.ai/call-forwarding)
c
We’ll share an update as soon as we have more information. Thank you for bearing with us and for your patience while we work to get everything back to normal.
d
@Aniah Urgent Help. I have a SIP trunked vapi number when i try to forward call using this number it fails why?
c
Hello there are several things to check: 1. Check Call Ended Reason First, verify if the forwarding was initiated by checking the call logs using the Vapi API. Look for 
endedReason: "assistant-forwarded-call"
in the response. 2. Check SIP REFER Configuration For SIP trunks, you need to: - Ensure your SIP provider has SIP REFER enabled - Use the correct SIP URI format for transfers Example correct configuration:
Copy code
{
  "type": "transferCall",
  "destinations": [
    {
      "type": "sip",
      "sipUri": "sip:14039932200@sip.telnyx.com"
    }
  ]
}
3. Verify Transfer Format: - Make sure phone numbers are formatted in E.164 format (e.g., 
sip:+15557654321@sip.domain.com
) - The transfer URI should include your SIP provider's domain If the issue persists after checking these, I recommend: 1. Analyzing your telephony provider logs for transfer failures 2. Checking SIP packet captures for REFER messages 3. Verifying your SIP trunk configuration matches provider requirementsv
3 Views
PreviousNext
Powered by