# SIP Trunk Setup

Before you can start using the SIP trunking feature in our system, you will need to collect some details from your external SIP provider. These details allow our system to authenticate and route calls correctly.

#### Step 1: Gather Information from Your SIP Provider

Contact your chosen SIP provider (e.g., Twilio, Telnyx, or another provider) and make sure you have the following details ready:

* **Hostname (SIP Domain / Proxy Address)** – The provider’s server address for call routing.
* **Phone Number (DID)** – The number(s) assigned to you by your provider.
* **Authentication Username** – The username registered with your SIP provider.
* **Authentication Password** – The password/secret for your SIP account.

For detailed instructions, see:

* [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: Log in to Your Account

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

#### Step 3: Enter SIP Trunk Information

Fill in the required fields using the information from your provider:

* **Hostname** – The SIP domain or proxy address from your provider.
* **Phone Number** – Your assigned number(s).
* **Auth Username** – The SIP username.
* **Auth Password** – The SIP password/secret.

#### Step 4: Save and Activate

* After saving, your SIP trunk will be registered with our system.
* You can now assign this trunk to your call flows, inbound rules, or outbound dialing profiles.\\

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