> For the complete documentation index, see [llms.txt](https://dataqueue.gitbook.io/voicehub-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dataqueue.gitbook.io/voicehub-docs/integrations/sip-trunk/sip-trunk-setup.md).

# Add Your SIP Trunk

After you've chosen your scenario and set up connectivity + authentication, add the trunk in the VoiceHub dashboard. If you haven't picked a scenario yet, start from the [SIP Trunk overview](/voicehub-docs/integrations/sip-trunk.md):

* [Public — IP / Username & Password](/voicehub-docs/integrations/sip-trunk/public-ip-auth.md)
* [Public — SIP Registration](/voicehub-docs/integrations/sip-trunk/public-registration.md)
* [Private (VPN) — IP / Username & Password](/voicehub-docs/integrations/sip-trunk/private-ip-auth.md)
* [Private (VPN) — SIP Registration](/voicehub-docs/integrations/sip-trunk/private-registration.md)

#### Step 1: Gather information from your SIP provider

* **Hostname (SIP domain / proxy address)** – your provider's server address for call routing.
* **Phone number (DID)** – the number(s) assigned to you.
* **Auth Username / Password** – required for **registration** and **username/password** trunks; leave empty for **IP authentication**.

Helpful provider guides:

* [Twilio SIP Trunk Setup Guide](https://www.twilio.com/docs/sip-trunking#create-a-trunk)
* [Telnyx SIP Trunk Quickstart](https://developers.telnyx.com/docs/voice/sip-trunking/quickstart)

#### Step 2: Add the trunk

1. Go to your account dashboard.
2. Navigate to **Channels → SIP Trunking**.
3. Click **Add SIP Trunk**.

#### Step 3: Enter the trunk details

* **Hostname** – the SIP domain or proxy address.
* **Phone Number** – your assigned number(s).
* **Auth Username** – the SIP username *(registration / username\&password trunks)*.
* **Auth Password** – the SIP password/secret *(registration / username\&password trunks)*.

> Use the VoiceHub endpoint for your scenario (see the [endpoints reference](/voicehub-docs/integrations/sip-trunk.md)) when routing calls on your provider's side.

#### Step 4: Save and activate

* After saving, your SIP trunk is registered with VoiceHub.
* You can now assign it to your call flows, inbound rules, or outbound dialing profiles.

<figure><img src="/files/BB2TK9KRtpyjqO8upb9w" alt=""><figcaption></figcaption></figure>

#### Next steps

Configure [inbound calls](/voicehub-docs/integrations/sip-trunk/configuring-inbound-calls.md) and [outbound calls](/voicehub-docs/integrations/sip-trunk/configuring-outbound-calls.md).