VAPI•8mo ago

plivo SIP outbound with VAPI

Hi @Shubham Bajaj

I am trying to make outbound call using VAPI and Plivo (I have purchased indian number and destination number is also indian)

{
"id": "0f1c1751-c734-424f-89ef-15200963ba9a",
"assistantId": "52739d19-cdce-4903-8563-a1476d2d0d39",
"phoneNumberId": "ba4e0f4e-fe1e-444d-b715-638e71703230",
"type": "outboundPhoneCall",
"createdAt": "2025-05-06T02:59:39.799Z",
"updatedAt": "2025-05-06T02:59:39.799Z",
"orgId": "a55e28be-be19-4ff3-bb9a-d2aae6511e42",
"cost": 0,
"customer": {
"number": "+917814064561",
"numberE164CheckEnabled": false
},
"status": "queued",
"phoneCallProvider": "vapi",
"phoneCallProviderId": "141cb4ce-a6ba-4071-b639-f0fce8089f01",
"phoneCallTransport": "pstn",
"phoneCallProviderDetails": {
"sbcCallId": "fe45f893-a4c8-123e-4fbb-06496812ecbf"
},
"monitor": {
"listenUrl": "wss://phone-call-websocket.aws-us-west-2-backend-production2.vapi.ai/0f1c1751-c734-424f-89ef-15200963ba9a/listen",
"controlUrl": "https://phone-call-websocket.aws-us-west-2-backend-production2.vapi.ai/0f1c1751-c734-424f-89ef-15200963ba9a/control"
}
}

here is the response of call/phone api endpoint.

getting this error An error occurred in this call: call.in-progress.error-sip-telephony-provider-failed-to-connect-call

Please help

Vapi Support BotAPP•5/6/25, 3:27 AM

The error you're seeing is likely due to geographic restrictions. According to the information I found, VAPI numbers are currently only permitted to make calls to US-based numbers, even for free telephony.

Solution: Use SIP trunking to connect your Indian numbers. Check with Plivo if they support SIP trunking with VAPI, then configure the SIP trunk with proper authentication details:

{
  "provider": "byo-sip-trunk",
  "name": "Plivo Trunk",
  "credentials": {
    "username": "YourPlivoUsername",
    "password": "YourPlivoPassword"
  }
}

{
  "provider": "byo-sip-trunk",
  "name": "Plivo Trunk",
  "credentials": {
    "username": "YourPlivoUsername",
    "password": "YourPlivoPassword"
  }
}

Sources:

⤵️ Mention @Vapi Support Bot for follow-ups 🐥

verbal-limeOP•5/6/25, 3:53 AM

Plivo support trunking on indian number also

https://www.plivo.com/docs/voice/ai-voice-agents/how-to-integrate-plivo-with-vapi#step-3-make-outbound-calls-from-vapi

here's outbound calling setup

How to Integrate Plivo with Vapi | Plivo

Plivo's SMS API and Voice API enables businesses to communicate with their customers at global scale. Sign up for free now.

KyleAPP•5/6/25, 10:46 PM

03:04:39:855 Call 0f1c1751-c734-424f-89ef-15200963ba9a0f1c1751-c734-424f-89ef-15200963ba9a Waited 300s But Transport Never Connected.
Hey as you can check in the screenshot your Pilvo is rejecting the outbound call, you need to check with them for further details.

callid-fe47a879-a4c8-123e-d69a-0ec7040a32ad.pcap2.73KB

verbal-limeOP•5/7/25, 11:25 AM

@Vapi Team Can you please tell me any other alternative for this?

Ccomprehensive-tomato 🔵 03:04:39:855 Call `0f1c1751-c734-424f-89ef-15200963ba9a` Waited 300s But Tran...

verbal-limeOP•5/7/25, 12:59 PM

@Shubham Bajaj ? any other alternative to ingerate vapi to make outbound calling in india using indian numbers?

KyleAPP•5/10/25, 3:34 AM

You can use a Viva Digital. They provide Indian phone numbers and then through SIP trunking you can directly connect them to VAPI.

KyleAPP•5/10/25, 3:34 AM

Let me know if you require further help with this.

verbal-limeOP•5/11/25, 11:11 AM

Yes I need help

verbal-limeOP•5/13/25, 11:38 AM

Hi @Vapi I tried reaching out to Viva digital team, do you have any contact with whom I can take it forward?

verbal-limeOP•5/13/25, 11:38 AM

or any other providers?

KyleAPP•5/14/25, 9:51 PM

Have you looked into Exotel? You can also use that provider as well.

plivo SIP outbound with VAPI

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