transfer voicemail problem Vapi AI #support

transfer voicemail problem

Abidi

12/29/2025, 11:45 PM

Running into problem that when transfer happens and it goes to voicemail that the caller doesn't know its a voicemail and to begin talking

Vapi Support Bot

12/29/2025, 11:46 PM

To ensure that transferred calls go to voicemail (and do not return to the user), configure your transfer with a

fallbackPlan

and set

voicemailDetectionType

"transcript"

for fast voicemail detection. Here’s an example configuration:

Copy code

json
"transferPlan": {
  "mode": "warm-transfer-experimental",
  "message": "Transferring you now.",
  "voicemailDetectionType": "transcript",
  "fallbackPlan": {
    "message": "Could not transfer your call, goodbye.",
    "endCallEnabled": true
  }
}

This setup will play the fallback message and end the call if voicemail is detected during transfer, instead of returning the call to the user. For more details, see the [Call Forwarding documentation](https://docs.vapi.ai/call-forwarding). Source: - [Call Forwarding](https://docs.vapi.ai/call-forwarding)

Abidi

12/29/2025, 11:47 PM

the issu sis that th e person dand cusotm doewss kn ow its a voicemill then and to speak

Abidi

12/29/2025, 11:47 PM

https://cdn.discordapp.com/attachments/1455345974082932758/1455346553949655060/VAPI_VOICEMAIL_ISSUE.md?ex=69546499&is=69531319&hm=31b3f545eda4b2915f6d13c7a85e0de9082e8d59317123007d95a3c1ebe3df5a&

Abidi

12/29/2025, 11:51 PM

THE PROBLEM ─────────── Inbound call → Transfer to staff → Voicemail picks up → Vapi detects it → BOUNCES BACK to AI → Caller can't leave voicemail WHAT WE WANT ──────────── Transfer → Voicemail → Caller hears beep → Leaves message → Hangs up WHAT WE'VE TRIED ──────────────── 1. Blind transfer (no transferPlan) → bounces back 2. Blind + sipVerb: dial → bounces back 3. Blind + fallbackPlan → ends call (no voicemail) 4. warm-transfer-experimental + transferAssistant → - transferCancel = bounces back - transferSuccessful = connects but no beep heard KEY QUESTIONS FOR VAPI ────────────────────── 1. Can we disable voicemail detection on transfers? 2. Can fallbackPlan continue to voicemail instead of ending? 3. Does transferSuccessful after VM detection let caller leave message?

Abidi

12/29/2025, 11:52 PM

I tried changing to SIP refer but nothing

Abidi

12/29/2025, 11:55 PM

When using sipVerb: 'refer', does the destination's voicemail greeting and beep pass through to the caller on inbound transfers?

Chiranjeet Mishra

12/31/2025, 10:39 PM

Hey Abidi, we spoke on the discord office hours and I believe we made some progress on this issue. If needed, feel free to DM me directly.

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