Technical Prerequisites

Below are some frequently asked questions regarding the technical prerequisites for our eLearning If your question is not answered in the FAQ below, please send an email to [email protected] We will get back to you with a solution right away!


Questions considering browser, firewall settings, etc.

Which browsers meet all criteria?

  • Participants have an HTML5 capable browser (Chrome, Firefox, Edge) on their desktop operating system
  • JavaScript is enabled at the browser and domain
  • Synchronized audio input and is set up on the system (implicitly via telephone), e.g. using a headset

Do I need to make changes to my firewall?

  • The firewall of the computer or network firewall does not block outgoing connections to all NO MONKEY sub-domains * The WebRTC protocol (tunneling is done via a TURN server and can be tested in advance with

  • TCP/IP ports 80/443 (for HTTP/HTTPS)

  • UDP ports in the range 16384 - 32768 (for FreeSWITCH/HTML5 RTP streams)


Questions considering your bandwidth, workplace, etc.

What do I need to consider about my workplace?

The computer has:

  • At least downstream bandwidth of at least 3 MBit/s and upstream of 1 MBit/s

  • Recommended quad core processor and 8 GB working memory or more

  • Recommended a workplace with two screens where one is of 24" inch, mouse and keyboard