# IP-Fax Gateway Settings
Device Management > Configuration > Fax > IP-Fax Gateway Settings

Displays the VoIP gateway registered for the IP-Fax function.
The page for registering and updating the VoIP gateway can be displayed from this page. You can set up to 50 VoIP gateways.

Note

- Settings on this page can be changed by the following administrators and users:
  - Network Administrator
  - Users logged in to a device that is set to perform user authentication
    Users must have normal fax operation rights and permission to change settings that usually only administrators can change.

### The List at the Top

You can switch pages using the list at the top.
Ten VoIP gateways are displayed per page. To register or change a registered VoIP gateway, select it, and then click the Change button.

### Change

Displays the Change IP-Fax Gateway Settings page corresponding to the currently displayed numbers (for example, 1 to 10).

For details about the Change IP-Fax Gateway Settings page

### Prefix

Displays the VoIP gateway's phone number.

### Protocol

Displays the protocol for IP-Fax transmission or newly registered additions to the Address Book. H.323 or SIP is displayed.

### Gateway Address

Displays the VoIP gateway's IP address or host name. Can also display the port number, if set to do so.

## Buttons

### Refresh

Click to update the currently displayed information.

### Back

Click to return to the previous page.

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