Hey team 👋 I'm building an AI voice agent on VAPI and I need to integrate Indian virtual phone numbers with SIP trunking. Can anyone help me with the following: 1. Which carriers/providers are officially supported or tested for Indian virtual numbers on VAPI? 2. Does Telnyx work well for Indian DIDs with VAPI's BYOC (Bring Your Own Carrier) feature? 3. If Telnyx doesn't support Indian numbers well, can you suggest other carriers/providers that do? (e.g. Twilio, Plivo, Exotel, Ozonetel, or any other legit provider) 4. Are there any India-specific carriers you recommend for SIP trunking that work reliably with VAPI? I want to avoid buying a number from a provider that doesn't integrate properly with VAPI. Any guidance or real experience from the community would be really helpful! Thanks 🙏

Thanks for reaching out about your SIP Trunking setup! You can find step-by-step troubleshooting help here: 👉 [Vapi SIP Trunking Guide](https://docs.vapi.ai/advanced/sip/sip-trunk) If that doesn’t resolve it, please reply with: • Your Call ID • The exact error message or behavior (e.g. 401 Unauthorized, timeout, etc.) • Whether it’s happening on inbound, outbound, or both trunks • Any recent configuration changes Once we have that info, we can help pinpoint the issue faster.

To integrate an Indian virtual number with Vapi, use the "Bring Your Own" SIP trunk feature. After obtaining your SIP provider's details, create a SIP trunk credential in Vapi like this:

bash
curl -X POST "https://api.vapi.ai/credential" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_VAPI_PRIVATE_KEY" \
  -d '{
    "provider": "byo-sip-trunk",
    "name": "Your India SIP Trunk",
    "gateways": [{ "ip": "YOUR_SIP_PROVIDER_IP", "inboundEnabled": true }],
    "outboundAuthenticationPlan": {
      "authUsername": "YOUR_SIP_USERNAME",
      "authPassword": "YOUR_SIP_PASSWORD"
    }
  }'

Replace the placeholders with your provider's info. This approach works for most SIP providers that support Indian DIDs, but always confirm compatibility with your chosen carrier. For more details, see the [Vapi SIP trunking guide](https://docs.vapi.ai/advanced/sip/sip-trunk). Source: - [Vapi SIP Trunking Guide](https://docs.vapi.ai/advanced/sip/sip-trunk)

Just tell me if the above mentioned companies can be able to integrate with vapi

@aryan As I responded in the public channel, you can get Indian numbers from Plivo, not problem. However, you can't connect them to VAPI directly, due to Indian TRAI regulations. You can use Cloudonix to perform that interconnect for you. You are welcome to DM me directly and I'll explain.

why dont u try https://vobiz.ai/

Hey aryan, you can connect any telephony provider to SIP using a custom SIP trunk, with native support for Twilio and Telnyx as well. More info in https://docs.vapi.ai/advanced/sip/sip-trunk. We do not support direct connection with Indian telecom providers, you will have to go with a SIP provider like Twilio.