# Import a number (/en/ai/studio/deploy/import)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

Import phone numbers to use for inbound and outbound calls with your deployed agents.

## What is Elastic SIP Trunk?

Elastic SIP Trunk is the connection layer between traditional phone networks and your deployed agents. When a caller dials your phone number, their carrier routes the call over the public telephone network. Elastic SIP Trunk translates that call into a format your agent can process, and passes it to your configured agent.

The term elastic means the trunk scales automatically with call volume; the same configuration handles one call or thousands without any changes at your end.

## Prerequisites

* An active account with Elastic SIP Trunk configured. See [Set up SIP trunk](sip-trunk).
* A deployed agent.
* A phone number configured in your SIP trunk.
* SIP domain and credentials from your SIP trunk account.

## Import a phone number

To import a phone number from your SIP trunk:

1. In the navigation sidebar, select **Phone Numbers**.

   ![Phone numbers list](https://assets-docs.agora.io/images/console/phone-numbers.png)

2. Select **Add Phone Number**.

   ![Import phone number](https://assets-docs.agora.io/images/console/add-phone-number.png)

3. Fill in the required information:

   * **Phone Number**: Enter the phone number in E.164 format (for example, `+1234567890`).
   * **Vendor**: Select `SIP Trunk` (currently the only supported vendor).
   * **Display Name**: Enter a descriptive name to help you identify this number.
   * **SIP Trunk Address**: Enter your SIP Trunk domain.
   * **Transport Protocol**: Select the protocol for SIP communication. Choose **TLS** if Secure Trunking is enabled in your SIP trunk, otherwise choose **TCP** or **UDP**.
   * **SIP Trunk Username**: Enter your SIP Trunk username.
   * **SIP Trunk Password**: Enter your SIP Trunk password.

4. Select **Add Phone Number** to import the phone number.

Your imported phone number is now available for use in inbound and outbound calls.

## Manage imported numbers

### Edit a phone number

To update the configuration of an imported phone number:

1. In the navigation sidebar, select **Phone Numbers**.
2. Locate the phone number you want to edit.
3. From the **Action** menu, select **Edit**.
4. Update the phone number details as needed.
5. Select **Save** to apply your changes.

### Delete a phone number

To remove an imported phone number:

1. In the navigation sidebar, select **Phone Numbers**.
2. Locate the phone number you want to delete.
3. From the **Action** menu, select **Delete**.
4. Confirm the deletion.

<CalloutContainer type="warning">
  <CalloutTitle>
    Caution
  </CalloutTitle>

  <CalloutDescription>
    Deleting a phone number removes it from all agents and campaigns that use it. Ensure no active inbound agents or outbound campaigns depend on this number before deleting.
  </CalloutDescription>
</CalloutContainer>

## Next steps

* [Set up a campaign](campaign): Use your imported phone numbers to create outbound calling campaigns
* [Publish your agent](deploy-agent): Publish agents to use in your campaigns
* [Handle inbound calls](inbound): Associate your number with an agent to answer inbound calls