# Assign an SMS trunk

Assign an inbound SMS trunk to one or more SMS-enabled DID numbers. The assigned trunk can be an SMS to Email trunk,
HTTP IN trunk, SMPP ESME trunk, SMPP SMSC trunk, or SMS trunk group, and its configuration determines where incoming
messages are delivered.

You can assign an SMS trunk directly from the **Trunk** column for a single DID number or use **Batch Actions** to
update multiple DID numbers.

## Before you begin

- An SMS-capable DID number is required. See [How to buy numbers](../../buy-numbers/how-to-buy.html#user-panel-purchase).
- An inbound SMS trunk is required. See [SMS Trunks](../../../sms/sms-trunks/index.html#userpanel-sms).

## Assign the trunk for a single DID number

To assign an inbound SMS trunk to a single DID number, follow these steps.

### Step 1: Open My Numbers page

In the DIDWW User Panel, go to **Phone Numbers > My Numbers**, or [open the page
directly](https://my.didww.com/#/user_dids).

[![My Numbers page.](../../../_images/both_fig1.png)](../../../_images/both_fig1.png)


**Fig. 1.** My Numbers page.

### Step 2: Assign the trunk

Locate the DID number you want to configure. You can use filters such as **Feature: Inbound SMS** to narrow the list.

1. In the **Trunk** column, click **SMS: none**.
2. Select the SMS trunk from the dropdown menu.
3. Click **Confirm**.

[![Assigning an SMS trunk to a single DID number.](../../../_images/single_gif1.gif)](../../../_images/single_gif1.gif)


**Fig. 2.** Assigning an SMS trunk to a single DID number.

Note

To unassign an SMS trunk, select **Unassign SMS Trunk** instead of choosing a trunk.

---

## Assign the trunk for multiple DID numbers

To assign an inbound SMS trunk to multiple DID numbers, follow these steps.

### Step 1: Open My Numbers page

In the DIDWW User Panel, go to **Phone Numbers > My Numbers**, or [open the page
directly](https://my.didww.com/#/user_dids).

[![My Numbers page.](../../../_images/both_fig1.png)](../../../_images/both_fig1.png)


**Fig. 3.** My Numbers page.

### Step 2: Select the numbers

Select the DID numbers you want to update. You can use filters such as **Feature: SMS In** to narrow the list.

You can select numbers in two ways:

1. Check the boxes next to individual DID numbers.
2. Click the checkbox next to the **Country/City** column to open bulk options.

   - **Select All** selects all DID numbers that match the current filter criteria, even if they span multiple pages.
   - **Select Visible** selects only the DID numbers currently shown on the page.

[![Selecting multiple DID numbers.](../../../_images/bulk_fig2.png)](../../../_images/bulk_fig2.png)


**Fig. 4.** Selecting multiple DID numbers.

### Step 3: Assign the trunk

1. At the bottom of the page, click **Batch Actions**.
2. Select **Update SMS Trunks**.
3. Choose the SMS trunk you want to assign.
4. Click **Confirm**.

[![Assigning an SMS trunk to multiple DID numbers.](../../../_images/bulk_gif1.gif)](../../../_images/bulk_gif1.gif)


**Fig. 5.** Assigning an SMS trunk to multiple DID numbers.

Note

To unassign an SMS trunk from selected DID numbers, select **Unassign SMS Trunk** instead of choosing a trunk.

## Related resources

- [SMS Trunks](../../../sms/sms-trunks/index.html) - Create and manage SMS trunks.
- [Batch actions reference](../batch-actions-reference.html) - Review My Numbers batch actions and selection behavior.

On this page