How does the name replacement work if my handset is registered to a Fritzbox?

The name replacement can be done either from the phone book of the handset or from the central phone book of the router.

Please enter # 960*0* and press the talk key for the name replacement from the phone book of the handset.
Please enter # 960*2* and press the talk key if the name replacement shall be carried out again from the central phone book of the Fritzbox.