> ## Documentation Index
> Fetch the complete documentation index at: https://docs.talkover.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Create SIP Trunk DID

> Add a DID (phone number) to a SIP trunk

# Create SIP Trunk DID

Register a new DID (phone number) on a SIP trunk. Once added, the DID can be assigned to agents for inbound or outbound calling.

## Endpoint

```
POST /api/v1/sip-trunks/{trunk_id}/dids
```

## Path parameters

<ParamField path="trunk_id" type="string" required>SIP trunk UUID.</ParamField>

## Request headers

<ParamField header="Authorization" type="string" required>
  Bearer token. Format: `Bearer talq_your_environment_token_here`
</ParamField>

<ParamField header="Content-Type" type="string" required>
  Must be set to `application/json`
</ParamField>

## Request body

<ParamField body="country_code" type="string" required>
  ISO 3166-1 alpha-2 country code (e.g., `US`, `BR`, `GB`).
</ParamField>

<ParamField body="number" type="string" required>
  Phone number in E.164 format (e.g., `+15551234567`).
</ParamField>

## Examples

<RequestExample>
  ```bash theme={null}
  curl -X POST "https://app.talkover.ai/api/v1/sip-trunks/trunk-uuid-1/dids" \
    -H "Authorization: Bearer talq_your_environment_token_here" \
    -H "Content-Type: application/json" \
    -d '{
      "country_code": "US",
      "number": "+15551234567"
    }'
  ```
</RequestExample>

## Response

<ResponseExample>
  ```json theme={null}
  {
    "success": true,
    "data": {
      "id": "phone-uuid-1",
      "number": "+15551234567",
      "country_code": "US",
      "formatted_number": "(555) 123-4567",
      "trunk_id": "trunk-uuid-1"
    }
  }
  ```
</ResponseExample>

## Error responses

### 409 — Number Already Exists

<ResponseExample>
  ```json theme={null}
  {
    "success": false,
    "message": "This number is already registered in your environment",
    "code": "DID_ALREADY_EXISTS"
  }
  ```
</ResponseExample>