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

# ElevenLabs (API)

> Set up the Unpod side of an ElevenLabs integration over the REST API - create a SIP trunk to ElevenLabs and attach your number.

The **programmatic** path for the **Unpod side**: create a SIP trunk pointed at ElevenLabs
and attach your number. The trunk's **origin endpoint** is what you then register in
ElevenLabs as a BYO SIP trunk - see the [Dashboard guide](/telephony/integrations/elevenlabs/dashboard)
for the ElevenLabs-side screens.

<Note>
  **Base URL:** `https://unpod.ai/api/v2/platform/`
  Every request needs `Authorization: Token <your-api-key>` and an `Org-Handle` header.
  See [Authentication](/api/get-started/authentication).
</Note>

## Prerequisites

* An Unpod **API Token** and **Org-Handle**.
* A number in your org (we'll fetch its `id` below).

## 1. Find your number

```bash cURL theme={null}
curl https://unpod.ai/api/v2/platform/telephony/numbers/ \
  -H "Authorization: Token $UNPOD_TOKEN" \
  -H "Org-Handle: $ORG_HANDLE"
```

```json Response (200) theme={null}
{
  "status_code": 200,
  "message": "Telephony numbers fetched successfully.",
  "data": [
    { "id": 501, "number": "+15551234567", "state": "NOT_ASSIGNED", "active": true }
  ]
}
```

<Card title="List Numbers reference" icon="hash" href="/telephony/numbers/list-numbers">
  Full request/response schema.
</Card>

## 2. Create the SIP trunk to ElevenLabs

Point the trunk's `sip_url` at ElevenLabs' SIP host. One trunk carries both inbound and outbound.

```bash cURL theme={null}
curl -X POST https://unpod.ai/api/v2/platform/telephony/trunks/ \
  -H "Authorization: Token $UNPOD_TOKEN" \
  -H "Org-Handle: $ORG_HANDLE" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "ElevenLabs trunk",
    "sip_url": "sip:sip.rtc.elevenlabs.io:5060;transport=tcp",
    "transport": "tcp",
    "port": "5060"
  }'
```

```json Response (201) theme={null}
{
  "status_code": 201,
  "message": "Trunk created successfully.",
  "data": { "id": 21, "name": "ElevenLabs trunk", "sip_url": "sip:sip.rtc.elevenlabs.io:5060;transport=tcp", "transport": "tcp", "port": "5060", "active": true }
}
```

<Card title="Create Trunk reference" icon="plus-circle" href="/telephony/trunks/create-trunk">
  All request fields (`sip_url`, `auth_username`, `auth_password`, `transport`, `port`, `source_ips`).
</Card>

## 3. Attach your number to the trunk

Map the number from step 1 (its `id`) to the trunk from step 2 (its `id`). The response
returns the **origin endpoint** - the address + creds you register in ElevenLabs.

```bash cURL theme={null}
curl -X POST https://unpod.ai/api/v2/platform/telephony/trunks/21/attach-numbers/ \
  -H "Authorization: Token $UNPOD_TOKEN" \
  -H "Org-Handle: $ORG_HANDLE" \
  -H "Content-Type: application/json" \
  -d '{ "number_ids": [501] }'
```

```json Response (201) theme={null}
{
  "status_code": 201,
  "message": "Numbers mapped to trunk.",
  "data": {
    "trunk_id": 21,
    "origin_endpoint": {
      "ingress": "sip:sip-lb1.unpod.tel",
      "dids": ["+15551234567"],
      "accepted_source_ips": [],
      "region": "ap-south"
    }
  }
}
```

The `origin_endpoint.ingress` (plus the trunk's `auth_username` / `auth_password`) is what
you enter in ElevenLabs' BYO SIP trunk.

<Card title="Attach Numbers reference" icon="link" href="/telephony/trunks/attach-numbers">
  Path params, request body, and the full origin-endpoint response.
</Card>

## Configure the ElevenLabs side

The Unpod side is done. Import the number into ElevenLabs over SIP. This is **ElevenLabs'
own API** (`api.elevenlabs.io`, `xi-api-key` header). Use the origin endpoint from step 3.

### 4. Import the number from SIP trunk

```bash cURL theme={null}
curl -X POST https://api.elevenlabs.io/v1/convai/phone-numbers \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "provider": "sip_trunk",
    "phone_number": "+15551234567",
    "label": "Unpod trunk",
    "outbound_trunk_config": {
      "address": "sip-lb1.unpod.tel",
      "transport": "tcp",
      "media_encryption": "allowed",
      "credentials": {
        "username": "<unpod trunk username>",
        "password": "<unpod trunk password>"
      }
    },
    "inbound_trunk_config": {
      "allowed_addresses": ["0.0.0.0/0"]
    }
  }'
```

`outbound_trunk_config.address` = your `origin_endpoint.ingress` host (no `sip:`). The
response returns a `phone_number_id` - attach your Conversational AI agent to it.

<Card title="ElevenLabs SIP trunking docs" icon="arrow-up-right-from-square" href="https://elevenlabs.io/docs/eleven-agents/phone-numbers/sip-trunking">
  Full phone-number import + agent assignment (this is ElevenLabs' API).
</Card>

## Troubleshooting

| Status              | Meaning           | Fix                                                 |
| ------------------- | ----------------- | --------------------------------------------------- |
| `400` on `/trunks/` | Missing `sip_url` | Send `sip:sip.rtc.elevenlabs.io:5060;transport=tcp` |
| `400` on attach     | Number not in org | Use a valid `id` from **GET /numbers/**             |
| `401`               | Bad Unpod token   | Verify `Authorization: Token …`                     |
| `403`               | Wrong org         | Verify the `Org-Handle` header                      |