Telephony and Skype for Business

Please note: Some of the links below lead to pages in German as work on the English version is still in progress. We apologize for the inconvenience.

Please send reports of malfunctions and applications for modifications directly to the hotline/helpdesk of the Data Center:



  • via e-mail: → (this is the preferred way)
  • via telephone: 39 26316 (a member of our service staff) or 39 26666 (an answering machine)
  • or in person and on-site: room 00 151 on the ground floor of the natural sciences institute building, Becherweg 21 (building 1.341)

→ Application for a new connection for telephone/fax

→ Application for changes to an existing telephone/fax connection


→ Instructions for a Polycom telephone/
Skype for Business
→ Instructions for a Siemens telephone


→ Instructions Openstage 20
→ Instructions Openstage 60

Information about the answering machine