Answers to
frequently asked questions

You have questions regarding your telephone? Here you will find answers. Just select your product category (e.g. ISDN phones) and click on the relevant product.


Please select a product category and / or product.


How can I reset the handset to factory conditions?

  • Switch off handset
  • Press 1, 4 and 7 and switch on the handset (SERVICE will appear)
  • Enter 4 6 8 5 4 6 3 (HOTLINE)

Handset switches off

 

 

Handset is reset to the default setting (Phonebook and Redial list are empty)