# Create an outbound trunk

Create an outbound SIP trunk to route voice traffic to external destinations
through DIDWW. Outbound service must be approved for your account.

## Before you begin

- An active DIDWW account is required. [Sign in to DIDWW](https://my.didww.com/users/sign_in) or [Create DIDWW account](https://my.didww.com/users/sign_up#/users/sign_up).
- Access to **DIDWW Outbound Trunks** is required. [Get access to outbound trunks](../get-access.html) if
  you have not requested it yet.

## Step 1: Open the creation form

1. In the DIDWW User Panel, go to **Voice > Outbound Trunks**.
2. Click **Create New**.

[![Create New menu on the Outbound Trunks page](../../../_images/fig179.png)](../../../_images/fig179.png)


**Fig. 1.** Create an outbound trunk

## Step 2: Configure general and authentication settings

1. Under **General**, enter a **Friendly name**.
2. Select the **Authentication method**.
3. Complete the fields for the selected authentication method:

   - For **Credentials & IP-Based**, enter at least one **Allowed SIP IP
     address**.
   - For **Twilio Account SID**, enter the **Account SID**.

Note

To use **IP-Only** authentication method, contact
[support@didww.com](mailto:support%40didww.com).

Additional field definitions, available values, and constraints are
listed in [General settings](../outbound-trunk-reference.html#outbound-trunk-create-general) and
[Authentication settings](../outbound-trunk-reference.html#outbound-trunk-create-authentication).

[![Authentication settings on the Create Outbound Trunk page](../../../_images/fig34.webp)](../../../_images/fig34.webp)


**Fig. 2.** Configure authentication

## Step 3: Configure media

1. Expand **Media**.
2. Configure your preferred media settings.

Field definitions, available values, and constraints are listed in
[Media settings](../outbound-trunk-reference.html#outbound-trunk-create-media).

[![Media settings for an outbound trunk](../../../_images/media_settings.webp)](../../../_images/media_settings.webp)


**Fig. 3.** Configure media

## Step 4: Configure termination

Expand **Termination**, then configure the trunk limits, allowed Caller IDs,
and destination dialing restrictions.

### Limits and notifications

Configure the rolling 24-hour limit, capacity limit, and usage limit
notification.

Field definitions, available values, and constraints are listed in
[Limits and notifications](../outbound-trunk-reference.html#outbound-trunk-limits-and-notification).

[![Limits and notifications for an outbound trunk](../../../_images/termination-limits.webp)](../../../_images/termination-limits.webp)


**Fig. 4.** Configure limits and notifications

### CLI settings

Allow any DID(s) to be used via the trunk or configure which Caller IDs the trunk can use.

Field definitions, available values, and constraints are listed in
[CLI settings](../outbound-trunk-reference.html#outbound-trunk-cli-settings).

[![CLI settings for an outbound trunk](../../../_images/termination-cli-settings.webp)](../../../_images/termination-cli-settings.webp)


**Fig. 5.** Configure CLI settings

### Destination dialing settings

Configure the destinations that the trunk can call.

Field definitions, available values, and constraints are listed in
[Destination dialing settings](../outbound-trunk-reference.html#outbound-trunk-dialing-mode-values).

[![Destination dialing settings for an outbound trunk](../../../_images/termination-destination-settings.webp)](../../../_images/termination-destination-settings.webp)


**Fig. 6.** Configure destination dialing settings

## Step 5: Configure emergency calling (optional)

If the trunk will be used for emergency calls, expand **Emergency Calling**
and configure the emergency calling settings.

Emergency calling requires an eligible DID with an activated emergency
service. If the service is not active yet,
[Create Emergency Calling Service](../../emergency-calling/create-emergency-calling-service.html). The
complete trunk-side setup is covered in
[Configure Outbound Trunks for Emergency Calling](../../emergency-calling/configure-emergency-calling-for-outbound-trunks.html).
Field definitions, available values, and constraints are listed in
[Emergency calling settings](../outbound-trunk-reference.html#outbound-trunk-create-emergency).

[![Emergency Calling settings for an outbound trunk](../../../_images/emergency-calling-settings.webp)](../../../_images/emergency-calling-settings.webp)


**Fig. 7.** Configure emergency calling

## Step 6: Create the trunk

1. Review the final trunk configuration.
2. Click **Create**.

The new trunk appears on the **Outbound Trunks** page.

[![Create button on the Create Outbound Trunk page](../../../_images/create-outbound-trunk.webp)](../../../_images/create-outbound-trunk.webp)


**Fig. 8.** Create the outbound trunk

## Next steps

- If the trunk has **Disabled** status, [Enable or disable an outbound trunk](enable-disable-outbound-trunk.html)
  before sending calls. Status behavior is listed in [Status
values](../outbound-trunk-reference.html#outbound-trunk-status-values).
- For a trunk that uses **Credentials & IP-Based** authentication, DIDWW
  generates SIP credentials after the trunk is created. To view them,
  [View outbound trunk credentials](view-outbound-trunk-credentials.html), then configure the credentials in
  your voice equipment.

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