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

# Connect a custom SIP trunk

> Add a gateway, connect a number, and route calls into AI-agent or operator workflows.

## Goal

Connect a custom telephony setup so your org can use its own gateway and numbers inside Sippet.

## Before you start

* Gather the gateway username, password, realm, proxy, and domain values.
* Decide which AI agent or queue should handle the number first.

## Step 1: create the gateway

In `Settings > Telephony & SMS`:

* add the gateway
* enter the provider connection details
* save and verify the configuration

## Step 2: connect the number

After the gateway exists:

* add the phone number
* set the inbound routing value
* assign the AI agent that should receive inbound traffic if applicable

## Step 3: test inbound and operator behavior

* place a test call
* confirm the number reaches the correct workflow
* confirm an operator can join when needed

## What good looks like

* the gateway is stable
* the number routes correctly
* the assigned agent and operator flow behave predictably

## Related pages

* [Custom SIP trunking overview](/console/custom-sip-trunking)
* [Set up a basic call workflow](/console/call-center-guide)