TISS offers the possibility to define several call diversion profiles. However, only one can be active at a time.

Please note that if you are using a softphone outside the TU Wien (e.g. at your home workstation, on your laptop on the road), a VPN tunnel with the normal VPN service must be established beforehand. The VPN client Profile "tuonly" is sufficient for this.

If the softphone is to be used behind a firewall, the firewall must be configured accordingly. Here also for incoming connections from the TUphone servers corresponding rules are to be provided. Which ports are to be released depends on the software variant used in each case.

The internal extensions 82300 (time announcement), 82301 (echo test) and 82302 (announcement of own extension) can be used for test calls.

  • Search for existing extensions of the Call Manager (address book TU Wien)
  • Voice calls, video, email and instant messages from contact lists at the click of a mouse
  • Pop-up message for calls - who is calling and how (voice or video)
  • Presence information (view, set)
  • List of all communication procedures
  • Visual Voicemail (management of voice messages, playback by mouse click)
  • Windows, Mac, iPhone, Android Clients


Compatible audio devices for softphones:

Headsets from Jabra and Plantronics can be purchased through BBG, Bechtle-direct.

In the last months we had a problem with Cisco Jabber for Android and iPhone that could be solved now. The login into Cisco Jabber failed. A login loop (Android) or a crash (iPhone) was often the result.

If the problem occurs, it can now be solved by reconfiguring parallel ringing in the TISS-TUphone profile.

  1. Remove the checkmark at "Configured"
  2. press "Save"
  3. wait a short time
  4. Activate checkmark again
  5. Press "Save" again

Enable mobility, if desired.

Then reinstall Cisco Jabber on the smartphone to ensure that the latest version is used. A login should now be successful and "Instant Messaging", "Phone Service" as well as "Voicemail" should be available. It should be possible to log in without a VPN.

SIP telephones are based on VoIP and use the SIP protocol. You can use any SIP client (including public domain) as a softphone. This is primarily intended for TU employees whose workstations do not run Windows or Mac.

The configuration (and its designation) depends on the respective SIP client. For the Realm or Domain parameter, enter The client should then automatically use one of the two redundant SIP registrars. The use of DNS/SRV records may still have to be activated (depending on the client). As Authentication User (SIP credentials) the TUphone username (and password) is to be used as set in the TISS. The extension must be set as the user. First name and surname of the user as display name.

The following codes are supported: G.711ulaw, G.711alaw, G.729r8, G.729a, G.729b, iLBC, G.722.

If the client does not support DNS/SRV records, the SIP registrar ( or, usually only one of them can be configured) must be specified. 

Please note that when using firewalls and the VPN service (necessary if the SIP client is to be used outside the TU Wien), corresponding and complex configurations are required.

If provided in the workstation model, the softphone account can be activated in the TU telephone profile of TISS via the icon (Applications).

Cisco Jabber for Windows and for Mac: (is also available on swd after ordering !TUfree, opens an external URL in a new window from the campus software list!)

Please get the software for Cisco Jabber for iPhone and Android from the respective App Store!

Service Center

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