> ## Documentation Index
> Fetch the complete documentation index at: https://docs.speaklouder.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Phone number (in a campaign)

> The number the agent calls from in this campaign.

This tab shows which number the agent uses for this campaign.

<img src="https://mintcdn.com/speaklouderpl/OQ-ItIDCFyGxwaZz/images/en/campaign-phone-empty.png?fit=max&auto=format&n=OQ-ItIDCFyGxwaZz&q=85&s=2f9b862ff1a74df50450b00613debf87" alt="Phone number tab with no number assigned" width="2880" height="1672" data-path="images/en/campaign-phone-empty.png" />

If no number is assigned yet, click **Choose number** and pick one of the numbers on your account. If none are free, buy a new one first, see [Phone numbers](/en/phone-numbers).

Once a number is assigned you get two actions: **Change number** (pick a different one from your pool) and **Disconnect** (the campaign is left without a number and stops calling). **Manage numbers** takes you to the shared list of all your numbers.

<Note>
  A number belongs to the **account**, not to a campaign. You can disconnect and reassign it at any time, but it can only serve one campaign at a time.
</Note>