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

# Phone Numbers

The **Phone Numbers** page is where you manage your voice agent phone lines — including purchasing new numbers, viewing active ones, and integrating external numbers via Twilio.

Stammer uses **Twilio** as its backend provider, giving you access to reliable global coverage and a wide selection of numbers across most countries.

#### **1. Purchasing a New Number**

To purchase a new number directly inside Stammer:

1. Navigate to the **Phone Numbers** tab in your dashboard.
2. Click **+ Purchase Numbers**.
3. Select your **Country** (e.g., United States, Canada, Australia, etc.).
4. Optionally, use the **Number Pattern** field to search for specific digits (like “123” or an area code).
5. Browse the list of available numbers by **location** and **price**.
6. Click **Purchase** next to your desired number.

Once purchased, the number will automatically appear under your **Active Numbers** tab and can be assigned to any voice agent.

> 💡 **Tip:** U.S. numbers start at around **$1.72/month**, depending on region and availability.

If your country is not available to purchase from Stammer directly then you can use the Connect Twilio option which will allow you to register a phone number directly in Twilio and then connect that phone number to Stammer. 

{% content-ref url="/pages/gOdshccUldFRbd6Afgh6" %}
[Connect Twilio](/stammer.ai-docs/voice-ai-agents/phone-numbers/connect-twilio.md)
{% endcontent-ref %}