By default, incoming calls will display your Grasshopper phone number as the Caller ID. You can change this for any of the forwarding numbers set up on your account.
- Log in to Extensions at https://nuui.us.grasshopper.com/Extensions.
- Click Edit next to the desired Extension.
- Below your forwarding numbers, click Options.
- Select the drop-down menu for “When a call is forwarded to me, show the caller id of” and select "the caller."
- Click Save.