## Twilio Elastic SIP Integration

**Looking for TwiML examples?** Check out our [Twilio Programmable Voice / TwiML guide](https://goguava.ai/docs/twilio-programmable-voice).

If you already own a phone number in Twilio and want to connect it to a Guava agent, you can do so using Twilio Elastic SIP Trunking.

### Create a Guava SIP code

Every SIP integration in Guava requires a `guavasip` code. `guavasip` codes are used to route inbound calls to agents — agents can listen to them and peers can dial them.

Open the [SIP page in the Guava dashboard](https://app.goguava.ai/dashboard/sip) and click **Create SIP Code**.

Take note of the SIP code and the termination URI.

### Create a Twilio Elastic SIP trunk

Navigate to the "Elastic SIP Trunks" page on your Twilio Console. You can find it using the search bar in the top right.

Click **Create new SIP Trunk** and provide the trunk with a name.

### Set the Origination URI

On the trunk's settings page, click **Origination** on the left hand side. Then click **Add new Origination URI** and enter your Guava termination URI (e.g. `sip:guavasip-xxx@sip.goguava.ai`). Then click **Add**.

### Assign a number to the Trunk

Assuming you already have a number in your Twilio account, under the **Develop** tab, go to **Phone Numbers** \> **Manage** \> **Active Numbers** and select that number. Select **Configure with** and change that setting to **SIP Trunk**. Then select the **SIP Trunk** dropdown and select the SIP trunk you created earlier.

Finally, scroll down and click **Save Configuration**.

### Start an agent

Next, start an agent using `agent.listen_sip("guavasip-xxx")`. This is the SIP equivalent of `agent.listen_phone(...)` — Guava forwards every call addressed to that code to your agent.

main.py

```python
import os
import guava

agent = guava.Agent(
  name="Nova",
  organization="Acme Corp",
  purpose="Handle inbound calls from the corporate PBX.",
)

# Register handlers — on_call_received, on_call_start, etc.

# Replace with your SIP code from the dashboard.
agent.listen_sip("guavasip-xxx")
```

### Call your number

Call your number and you should be able to reach your agent.

Questions? [hi@goguava.ai](mailto:hi@goguava.ai)