4.1.3 Adding and configuring softphones and mobile clients

Adding a softphone

Once you have installed and configured a sofphone or a mobile client, they are automatically added to the portal.

The installation process for a softphone is done from the end-user computer.

To install a sofpthone:

  1. Go to https://voip-centrex.dfn.de/en/service/downloads.

  2. Select a relevant softphone client, i.e. for Windows or MAC OS.

  3. Download the installer.

  4. Install the application on your PC. Please note that you need administrator rights to be able to do so.

  5. Register the softphone using your credentials (your K account user name and device creation password).

There are two versions of Nsoftphone for Windows: Standard and Premium. You can select the version you require during the installation process. Please note that unlike the Standard version, the Premium one is never included in any license.

Please note that the Nsoftphone Standard is non-terminal-server compatible. It can, however, be used on a Virtual Desktop Infrastructure (VDI).

Adding a mobile client

The installation process of a mobile client is very similar to that of a softphone.

To install a mobile app:

  1. Go to Play Store or to the iOS App Store.

  2. Search for DFN mobile or DFN VoIP Centrex mobile.

  3. Follow the app installation process.

  4. Register the app using your credentials.

Important

When installing a mobile app, please note that

  • The DFN Mobile app cannot be used without a SIM card

  • A valid mobile phone number is required when adding an DFN mobile device into the Admin Portal

  • Should a dummy number be entered into the portal, DFN support reserves the right to delete the device without prior notice.

Important

When a call to the emergency services is made from the DFN mobile app, the application will automatically hand over the call to the mobile carrier. This means that the call will not go through the DFN telephone system.

Please note that

  • Calls to emergency services numbers ignore permission and preferred outbound trunk configuration.

  • When a call is made to an emergency services phone number, the system will ignore the extension permission, as well as the preferred outbound trunk configuration.

  • The telephone system will instead use the site information of the device that is used to make the call to present the adequate CLI to the emergency services.

However, note that only calls to emergency services rely on the device being configured to the correct site. For all other calls, decision to allow or deny the call to go through will be based on the outbound trunk being used.

When the DFN telephone system is unable to contact an DFN mobile app over data, calls will be automatically forwarded to the GSM number registered in the Admin Portal.