----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Function Calling]() * [Call Forwarding]() * [List Calls]() * [Create Phone Call]() -----------------------------

### Answer Yes, it is possible to forward calls to regular numbers using the inbuilt

CallTransfer

function and the

forwardingPhoneNumbers

array with Vapi. You do not need to use Twilio externally for this, as Vapi can handle call forwarding internally. The

forwardingPhoneNumbers

array does not need to be inside a custom function; it can be directly specified in your assistant's configuration. For configuring call forwarding, you could use the

forwardingPhoneNumbers

attribute to define an array of phone numbers for call forwarding, which allows you to direct calls to different departments or individuals based on the conversation context [(1)]() . If you're encountering an array or object error when adding phone numbers as an array, ensure that the format you are using matches the expected JSON structure. Here's an example of how the

forwardingPhoneNumbers

array could be structured:

json
{
  "forwardingPhoneNumbers": [
    {
      "number": "+11234567890",
      "message": "Forwarding your call."
    },
    {
      "number": "+10987654321",
      "message": "Redirecting your call to another representative."
    }
  ]
}

Make sure that: - Each phone number is correctly formatted and includes the country code. - The JSON structure is valid without any missing commas or braces. If you continue to face issues, double-checking the JSON format and ensuring it matches the expected schema might help resolve the array or object error you're encountering.

Got it. Tagging @User for additional help.