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

# How to use your own business number

> Complete guide to setting up Groundwire and call forwarding to use Ecco with your existing phone number.

To receive calls through the Ecco system while keeping your original phone number, you must set up the Groundwire application to manage communications and configure call forwarding to the VoIP number assigned by the Ecco team.

## Part 1: Groundwire Configuration

**Groundwire** is a professional VoIP application that allows you to manage SIP calls with maximum reliability. it ensures you receive calls even when the app is closed or the phone is on standby, thanks to push notifications.

<Info>
  **Application Cost:** Groundwire is a paid app (approximately €9-10 one-time purchase). The payment will be handled via a gift card shared by the Ecco team at the time of setup.
</Info>

### Step 1: Download the App

Download Groundwire from your device's store:

* [iOS (App Store)](https://apps.apple.com/app/groundwire-voip-sip-softphone/id378503081)
* [Android (Google Play)](https://play.google.com/store/apps/details?id=cz.acrobits.softphone.aliengroundwire)

### Step 2: Add New Account

1. Open Groundwire.
2. Tap the **Settings (gear icon)** in the top right.
3. Tap **Accounts**.
4. Tap the **+ button** in the top right.
5. Select **Generic SIP Account**.

### Step 3: Enter Account Details

Fill in the fields with the data provided by Ecco:

| Field        | Description              | Value (Example)              |
| :----------- | :----------------------- | :--------------------------- |
| **Title**    | Descriptive account name | *\[Business Name] Reception* |
| **Username** | Your SIP username        | *hx-xxxxxxxx...*             |
| **Password** | Dedicated SIP password   | *yourpassword*               |
| **Domain**   | Twilio SIP server        | *\[id].sip.twilio.com*       |

### Step 4: Enable push notifications

This step is critical to ensure no calls are missed.

1. Tap **Incoming Calls** (under the Domain field).
2. Select **Push Notifications** (a blue checkmark will appear).
3. Tap **Back** and then **Save** in the top right.

### Step 5: Verify Configuration

If the configuration is correct, you will return to the main screen and see your account name in **GREEN** at the top left. If it remains red or shows "No account," verify your internet connection and the accuracy of the credentials entered.

***

## Part 2: Call Forwarding

Call forwarding allows you to redirect incoming calls from your business number to the VoIP number provided by Ecco. Choose the most convenient method for your setup:

<Tabs>
  <Tab title="Universal Code">
    Enter the following codes directly on your phone's dial pad. Replace `[number]` with the VoIP number provided by Ecco.

    * **Activate:** `**21*+39[number]#`
    * **Deactivate:** `##21#`
  </Tab>

  <Tab title="iPhone">
    1. Go to **Settings**.
    2. Scroll to **Phone**.
    3. Tap **Call Forwarding** and toggle it on.
    4. Enter the VoIP destination number provided by the Ecco team.
  </Tab>

  <Tab title="Android">
    1. Open the **Phone** app (dial pad).
    2. Tap the **three dots (menu)** in the top right and go to **Settings**.
    3. Select **Calling accounts** (or a similar option depending on your model).
    4. Find **Call forwarding**.
    5. Choose the condition (e.g., "Always forward") and enter the provided VoIP number with the `+39` prefix.
  </Tab>
</Tabs>

***

<Note>
  In case of any issues, contact Ecco support at [support@tryecco.com](mailto:support@tryecco.com) for assistance during the setup process.
</Note>