> For the complete documentation index, see [llms.txt](https://docs.dapta.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dapta.ai/ai-voice-agents/phone-numbers.md).

# Phone numbers & telephony

Every way to give a Voice Agent a phone line — buy one in Dapta, verify a number you own, add a test number, or connect your own telephony.

An agent cannot call or be called until it has a number. There are four routes, and which one you pick depends on whether you want Dapta to handle the telephony or you already have a carrier.

| Route                          | Use it when                                                              |
| ------------------------------ | ------------------------------------------------------------------------ |
| **Buy a number in Dapta**      | You want a working line in minutes and no carrier relationship to manage |
| **Verify a number you own**    | You already have a business number and want outbound calls to show it    |
| **Add a test number**          | You are still building and want to call yourself                         |
| **Connect your own SIP trunk** | You have a carrier, a contract or compliance requirements of your own    |

Once a number is attached, decide what happens when someone calls **in** — an agent can answer inbound calls on the same line it uses for outbound.

***

## Get a number

{% content-ref url="/pages/we5zspVTGdlh8PjAmZVe" %}
[Buying Phone Numbers through Dapta](/ai-voice-agents/phone-numbers/buying-phone-numbers-through-dapta.md)
{% endcontent-ref %}

{% content-ref url="/pages/yn7tfi9GqIKoGvAANXyv" %}
[Verifying an Existing Phone Number for Outbound Calls](/ai-voice-agents/phone-numbers/verifying-phone-numbers-in-dapta.md)
{% endcontent-ref %}

{% content-ref url="/pages/Q74xtPbnEVm6J4Qedsk5" %}
[How to add a Phone Number for Testing in Dapta](/ai-voice-agents/phone-numbers/how-to-add-a-phone-number-for-testing-in-dapta.md)
{% endcontent-ref %}

## Bring your own telephony

{% content-ref url="/pages/JdvL0SojlEy8DZBqVXOx" %}
[Connecting your telephony (SIP trunk) to Dapta](/ai-voice-agents/phone-numbers/connecting-your-sip-trunk.md)
{% endcontent-ref %}

## Answer incoming calls

{% content-ref url="/pages/cBC9eVlBwGis5PgvXSXg" %}
[Inbound Calls and How to Activate Them](/ai-voice-agents/phone-numbers/inbound-calls-and-how-to-activate-them.md)
{% endcontent-ref %}

## Calls at the same time

Your plan sets how many calls can be live at once, with separate limits for inbound and outbound.

{% content-ref url="/pages/WucGUiNgqHGWH63OWDys" %}
[Concurrent calls](/ai-voice-agents/phone-numbers/concurrent-calls.md)
{% endcontent-ref %}


---

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