Hello Please Help ! I am getting issue when I call customers through twillo number the issue : "call.start.error-get-transport" Note : calls are going through vapi free number

To resolve the "call.start.error-get-transport" error, make sure your Twilio number is properly imported into Vapi and that your API call includes the correct transport configuration. Here’s an example of the required

transportConfigurations

in your call request:

json
{
  "transportConfigurations": [
    {
      "provider": "twilio",
      "timeout": 60,
      "record": false,
      "recordingChannels": "mono"
    }
  ]
}

Double-check that you are using the correct

phoneNumberId

for your imported Twilio number in your API call. For more details, see the [Vapi documentation](https://docs.vapi.ai/api-reference/calls/create-phone-call). Sources: - [Vapi API Reference: Create Phone Call](https://docs.vapi.ai/api-reference/calls/create-phone-call) - [Vapi Phone Calling Guide](https://docs.vapi.ai/phone-calling)

Hi Sajid Ali, To address the "call.start.error-get-transport" error when calling customers with a Twilio number, please ensure the following: 1. Twilio Number Importation: Verify that your Twilio number is correctly imported into Vapi. You can refer to the [Import number from Twilio guide](https://docs.vapi.ai/phone-numbers/import-twilio) for detailed instructions. 2. Transport Configuration: Ensure your API request includes the necessary

transportConfigurations

. Here's a basic example:

json
   {
     "transportConfigurations": [
       {
         "provider": "twilio",
         "timeout": 60,
         "record": false,
         "recordingChannels": "mono"
       }
     ]
   }

Make sure the

phoneNumberId

in your API call corresponds to the imported Twilio number. 3. Twilio SIP Trunk: Set up a SIP trunk for Twilio if you're encountering issues with calls not connecting. This is not always highlighted but can be necessary for certain setups, especially for international calls. You can follow instructions from the [Twilio SIP Trunk integration guide](https://docs.vapi.ai/advanced/sip/twilio). If calls through Vapi's free numbers are working but not with the Twilio number, reviewing these configurations should help resolve the issue.

I am not getting this I am not programmer how to check transport Configuration

If you are using a Vapi free number, you are limited to 10 calls per day and can only make calls within the US. If you are using a trial twilio account, you may not be able to make many calls due to Twilio restrictions and we recommend purchasing a twilio number then upgrading to a paid account.