# Change Gateway Trunk Settings

When the EX Controller is added to MiVoice Business, you may need to modify the settings for some of the gateway trunks.

## Modifying the Settings for a Gateway Trunk

To modify the settings for a gateway trunk:

1. Go to the Gateway Trunk Descriptors form.

2. Select the gateway trunk you want to modify.

3. Click Change.

4. In the Gateway Trunk Descriptors window, change the following fields:

- Link State

- Line Type

- Endpoint Type