OpenScape Web Client – browser

This user guide helps you to use u:phone in a browser using the OpenScape Web Client.

 Please note

  • All u:phone services are only accessible via the University of Vienna’s data network and/or via VPN.
  • The web client does not support multiple sessions. Therefore, do not open the web client in several browser sessions at the same time as this might affect other services.
  • You cannot use the web client in private mode in your browser.


  • You are an employee of the University of Vienna.
  • You have a valid u:account UserID and password.
  • You have a World Premium or Local Premium profile.
  • You have to consent to the declaration of consent . You can find the link to the declaration of consent in the e-mail containing your access details.


Further user guides are available for the following functions of the OpenScape Web Client:

Logging in, logging out, interface


Logging in

Open the OpenScape Web Client in the browser and log in using your u:account user details.

Menu bar

The menu bar highlighted in black is structured as follows:

  • Click the arrow icon to set up call forwarding and create rules.
  • By clicking the headset icon, you can set your preferred device. Your preferred device is the device on which you want all incoming calls to arrive. Your u:phone device is selected by default.
  • By clicking your name, you reach the Settings.

Content area

To the left, you find the Call history showing all incoming, outgoing and missed calls. To the right, you find the search or dial field and below it your Contacts.

Logging out

  1. Click your name.
  2. Select Sign out.


Making a call

You have two options of making calls using the web client:

  1. You use the web client to control your preferred device (such as your u:phone device or your business mobile phone) and make the calls on your preferred device.
    Requirements: Your preferred device must be reachable.
  2. You make phone calls directly via the web client using a headset connected directly to your computer.

    • The Web Client has to be selected as your preferred device – see user guide Selecting a preferred device.
    • You are using one of the following browsers: Chrome, Edge, Firefox, Chromium-based browser.


 Please note

  • The persons calling who try to reach your extension will still only see your 5-digit extension and not the number of the device to which your call is forwarded.
  •  Call back only from the web client. Otherwise, the call recipient will see the actual number of your device.
  • If the preferred device is abroad, costs may incur (such as roaming costs). This does not apply when you make calls using the OpenScape Web Client.
  • When you log out from the web client, your preferred device remains active.

How to enter your phone number correctly :

  • Extension of the University of Vienna: 5-digit extension (for example, 14699)
  • Business mobile phone: 90extension (for example, 9014699)
  • Private mobile phone: 00664xxxxx, 00676xxxxx …
  • Phone number Vienna: 001xxxxxxx 
  • Phone number Germany: 00049xxxxxxx

You can make a call via the dialpad, the call history or the contacts list:

Enter the number you want to call in the search or dial field and click the headset icon.


Hover over the desired entry in your call history and click the headset icon.

Hover over the desired entry in your contacts list and click the headset icon.

Transferring a call

Prerequisite: You are currently in an active call in the Web Client.

In the controls for the call click the icon showing a person.

Screenshot – Transferring a call

In the search field, enter the name or number of the person you want to transfer the call to. Then click the respective entry or the plus icon.

Screenshot – Transferring a call

The call is now being transferred to that person.

Put a call on hold and retrieving a held call

Prerequisite: You are currently in an active call in the Web Client.

In the controls for the call click the pause icon.

Screenshot – put a call on hold

The call is now being held. Click on the play icon to retrieve the held call.

Screenshot – retrieving a held call


Prerequisite: You are currently in a call in the Web Client and have put the call on hold.

Enter the name or number of the desired person in the search or dial field underneath the controls for the call on the right hand side. Then click the entry or the headset icon.

Screenshot – callback

You can now talk to a second person while the first call is still on hold. You can switch between the two calls with the pause and start icon.

Screenshot – callback

If you end one call, the other call will be activated automatically.

Connecting a call

If you are currently in an active call and have put a second caller on hold in the Web Client, you can transfer the call to these two persons.

In the controls for the active call click the icon showing a person and select the entry Transfer to waiting call.

Screenshot – connecting a call

The call is now being transferred to the two persons.