How do I register a Konftel 300W to a Konftel DECT base
If you need to register the Konftel 300W to a Konftel DECT base you must first set the Konftel DECT base in registration mode. This is done by pressing and holding the button on the base for 4 seconds.

Then you go to the Konftel 300W in to MENU > SETTINGS > DECT > REGISTER and enter 0000 as PIN code and just press enter if you're asked for a PARK code. The display will show "Success" after a successful registration.