### Answer --- The caller ID display name that recipients see on outbound calls is separate from the agent assignment in Retell AI. The display name is tied to your phone number's carrier registration (branded caller ID) , not to the agent configuration. ## What Controls Caller ID Display Name Retell AI offers a Branded Call feature that allows you to display your business name on outbound calls. [(1) ]() This is configured at the phone number level through a business profile verification process, not through agent settings. ## How to Update It To change the caller ID display name: 1. You need to update your branded caller ID registration for that phone number 2. Submit your business profile for review through the dashboard 3. Once approved, the new business name will display on outbound calls ## Phone Number Configuration You can update the phone number's

outbound_agent_id

to bind it to your new agent using the Update Phone Number API, but this only controls which agent handles the call—not the display name recipients see. [(2) ]()

javascript
const phoneNumberResponse = await client.phoneNumber.update('+14157774444', {
  outbound_agent_id: 'oBeDLoLOeuAbiuaMFXRtDOLriTJ5tSxD',
  nickname: 'Frontdesk Number',
}) ;

The

nickname

field is for your internal reference only and does not affect caller ID display. If "Nightlife Demo" was set up as a branded caller ID, you'll need to re-register the number with your new business name through the branded call verification process.

​ To learn more, see the sources I considered: [[1] Platform Changelogs | Retell AI](https://www.retellai.com/changelog) [[2] Update Phone Number](https://docs.retellai.com/api-references/update-phone-number) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.