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

# Connect Vonage via SIP Trunking

> Integrate your Vonage numbers with UponAI using elastic SIP trunking.

<Steps>
  <Step title="Create Elastic SIP Trunking in Vonage">
    In the Vonage dashboard, locate the **SIP** section and select **"Something else"** for the provider type.

    Follow the Vonage step-by-step SIP trunk setup instructions.

    **Configure Termination (outbound):**

    * Note the **Termination SIP URI**, **username**, and **password** — you'll need these when importing to UponAI.

    **Configure Origination (inbound):**

    * Set the origination SIP URI to: `sip.retellai.com`
  </Step>

  <Step title="Move numbers to your SIP trunk">
    Purchase new numbers or link existing Vonage numbers to the SIP trunk you just created.
  </Step>

  <Step title="Import numbers to UponAI">
    In the UponAI dashboard, import the number by supplying:

    * The **Termination SIP URI** from Step 1
    * The **username** and **password** from Step 1

    You can also import numbers programmatically via the Import Number API.

    Once imported, the number appears in your dashboard. You can bind agents and make or receive calls just like with a UponAI-purchased number.
  </Step>
</Steps>