DFN VoIP-Centrex

Upon request, the FHE will provide you with a work phone at your workplace in the form of a mobile app.
You can submit your request via the PIP. If you do not have access to the PIP, a line manager can submit the request on your behalf.

The mobile application can be used anywhere, including on a mobile phone and whilst working remotely. It enables you to answer calls on your work number and also to make calls from that number from any location. (Internet access required)

Official DFN documentation on VoIP Centrex can be found at voip-centrex.dfn.de/en/service/documentation/manuals/dfn-voip-centrex-manuals

Information on using the service at the FHE can be found on the LRV drive in the ‘Public’ section under ‘Instructions’, or downloaded, after logging in to the internal area.

By default, your telephone number is configured for national calls only. If you wish to make any changes (name, international calls, etc.), or if you encounter any problems or faults, please contact the Service Desk.

Note:
Call forwarding to a mobile number is not necessary due to the mobile application.

FAQs

When you click on the link in the invitation email, the following message appears:
“An error has occurred. The offer is no longer valid.”

Solution:
Go to the DFN VoIP-Centrex page and enter your email address. After clicking “Next”, select “Forgotten password”.
If your computer is centrally managed, please contact your departmental administration team.

If you are using a centrally managed smartphone or tablet, please check the “Self Service” section or contact your departmental administration team.

If you need to install the DFN VoIP-Centrex app on your computer yourself (DFN: here), select the version without CRM Connect.

For smartphones, the DFN VoIP-Centrex app is available on the Play Store here / on the App Store here.
The mobile app requires you to log in again at regular intervals.

Our recommendation:
Log out of the app at the end of each week and then log back in.

Reason: If it has been too long since you last logged in, you will no longer be able to change your status or make or receive calls. (grey icon on your profile)
If you receive an error message when launching the app on your mobile phone, you can install the alternative app “Cloudya” from NFon.
For the headsets supplied, you will find the relevant software for customising your headset in the ZENworks catalogue (double-click the ZENworks icon on the taskbar).

If your computer is not yet part of the central software distribution system, please speak to your departmental IT administrator.
Employees who are managed centrally will find a bundle called “Autostart Telephone” in the ZENworks catalogue (double-click the ZENworks icon).

Clicking ‘Run’ or ‘Open’ adds the DFN VoIP Centrex app to the Autostart list; running the bundle again removes it from the list.

If you wish to add the application to the Autostart list manually, you must follow these steps.
1. Use the Windows menu to search for the “DFN VoIP Centrex” app, then select the “Open file location” option.
  Copy the app’s shortcut from there.
2. Press the Windows key + R and enter:
  shell:startup
3. Paste the shortcut copied in step 1.
The first time you open the DFN app, you must manually select your preferred audio device in the settings.

Unfortunately, you cannot use the ‘Default’ option here, even if the correct audio device is already selected there.

Please select the device manually, without the word ‘Default’ appearing before it.

Background:
Noise cancellation only works when the device is selected directly; it does not work when selected via ‘Default’.
When ‘Default’ is selected, all sounds are amplified equally, making them almost impossible to understand.
This is not specific to any particular app and can be improved or eliminated by turning down the volume on the speaker.

The cause is often that the speaker on the mobile phone is set to maximum volume. As a result, the surrounding microphones on the mobile phone (usually including one near the speaker) also pick up the caller’s voice and feed it back as an echo (feedback).

Reducing the volume by just one or two notches from the maximum setting will result in a significant improvement for the caller.
It is not necessary to forward calls to your mobile.
Install the app (you’ll find the link under Quick Links), log in, and you’ll be able to answer calls to your work number on your mobile straight away – and, most importantly, use it to make return calls.

The app can be silenced either individually (by setting the ‘Do Not Disturb’ status) or centrally on your mobile.
The DFN VoIP-Centrex mobile app can be used on any device with an internet connection (Wi-Fi is sufficient).

A key advantage over a work mobile phone is that callbacks can also be made via the work number.

Please check in advance whether the mobile app already meets your needs.

Information on how to apply for a work mobile phone can be found in the PIP.