Configuring a local IP phone

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Configuring local IP phone credentials on your Internet-Box and SIP phone.

What are local IP phone credentials?

You can use your Swisscom fixed network number on SIP-enabled external devices or appropriate software using the “Local IP phone credentials” function (max. 10 connections). The SIP standard (Session Initiation Protocol) is a communications protocol used predominantly in Internet telephony (VoIP).

The SIP phone must be connected to the Internet-Box in your home. The devices in question need to be configured correctly to use this function. Contact our chargeable support service for personal advice and assistance.

Making calls using the Home app

The Home app telephony function offers you the convenience of making and receiving fixed network calls at home through the app using your home network. The app works like an extra IP fixed-line telephone (handset).

Configuring the Internet-Box

In the Internet-Box web portal, you need to set up a connection, with an individual user name and password, for each SIP device. All additional parameters will be generated automatically by Swisscom and listed in the web portal.

To configure local IP phone credentials, enter the following address in your browser http://internetbox or This will take you to the Internet-Box web portal. Please note that you will need to be connected to your WLAN at home.

  • Access the web portal

    1. Select the “Telephony” menu
    2. Switch to expert mode
    3. Select the “Local IP phone credentials” tab

    Add new phone credentials

    1. Click “Add credentials”
  • Select device & number

    1. Select the required device and internal number from the list
    2. If you have an additional telephone number, you can select which number you want to use for outgoing and inbound calls
    3. Define the user name and password, and click save

Configuring the SIP telephone

After setting up your SIP telephony credentials in the Internet-Box web portal, you need to enter the credentials on your SIP device. Installation examples follow. Please note that exact parameter names may vary depending on the provider. In the pictorial instructions that follow, the same sample values are used throughout.

  • Access portal

    1. Type into your browser
    2. Enter the PIN in your Gigaset web portal (0000 unless you have changed it)
    3. Click OK


    1. From the main menu, click “Settings”.
    2. Select “Telephony” from the left-hand menu.
    3. Select one of the 6 IP lines and click “Edit”.
  • Select IP line

    1. Enter a name for the IP line.
    2. Enter the connection name and password corresponding with the definition in your Internet-Box user interface. In addition, enter the internal number in the “User name” field. Enter your choice of name in the “Display name” field.
    3. Click the relevant button to go to the advanced settings.

    Complete fields

    1. Complete the fields exactly as shown in the screenshot.
    2. Confirm the settings by clicking “Save”.
  • Done

    1. Your SIP account has now been registered. You can now make calls with your Gigaset. If the registered value is not displayed, restart the device using the “Administration” menu.

  • Download app

    1. Download the Linphone app from the App Store, the Google Play Store or the Windows Store.
    2. Open the downloaded app. (You must be connected to your Internet-Box WLAN to configure settings.)
    3. On the welcome screen, click “Close”. (This is due to the specific configuration of the “Local IP credentials” function”.)

    Select settings

    1. Continue with the configuration by clicking “Settings” at the bottom right.
  • Complete fields

    1. Enter your internal number, and the user name and password that you have saved.
    2. Enter your Internet-Box IP address under “Domain” and “Proxy”. ( by default).
    3. Ensure that the “Outbound proxy” button is “ON” and click on the “number pad” to make a call.


    1. Once the green light and “Registered” are displayed, the application is correctly configured and ready to use.

The Snom D715 corded telephone supports the “Power over Ethernet” function. It is therefore sold without its own power supply. You will need a 5 V/2.1 A power supply to use the Snom D715 with the Internet-Box.

  • Identify local IP address

    1. Go to the web portal (type http://internetbox or in the browser) and click on the “Network” menu.
    2. Select the “Device list” option.
    3. Make a note of the Snom D715’s IP address as shown in the example.

    Enter address

    1. Type the Snom D715’s IP address in your browser's address bar and press return
  • Select system language

    1. To change the system language, left-click on “Setup” >"Preferences".
    2. Select your preferred language and click “Apply” at the bottom of the page.

    Complete fields

    1. To continue configuring your SIP account, select “Identity 1”.
    2. Enter the new details from your Internet-Box user interface as shown in the screenshot.
    3. Confirm the configuration by clicking “Apply”.
  • Done

    1. To check whether your configuration is correct, click on “System information”. You can now use your Snom D715 on your Swisscom line.

Information on SIP credentials

SIP credentials are confidential login details for using the fixed network number on devices and third-party VoIP clients not supported by Swisscom. Once configured, you can make calls anywhere in the world subject to your subscription. These calls are charged in accordance with your fixed network subscription and appear on your invoice.



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