Phone Support

If you need assistance, please do not hesitate to call our support-team.

For technical issues that require additional materials (photos, PDFs, etc.) as well as in case of outside of office hours, you can reach out to us via email. This allows us to easily target your messages and attached documents and keep track of the history of issues if required.

For calls please use this number:
+49 (2354) 70655 0

Or send us an email to:

For quicker processing, it is helpful if you provide us with the following information:

  • serial number of the device
  • exact model designation
  • currently used firmware-version
  • detailed error description

Our support-times:

Monday - Friday
08:30am - 05:00pm

Please understand that on public holidays and weekends, our support is not available.


In some cases it may be neccessary for our support team to directly access your system. We rely on TeamViewer in most cases, which you can download for all major operating systems for free here:

Telefonsupport: Zwei Kinder unterhalten sich mit einem Dosentelefon

Phone support

Your iesy direct line.