AASTRA DT4x2 for MX-ONE User Guide EN - Manual (Page 50)

Phonebook
DT412/DT422/DT432 50
Phonebook
Your phone is equipped with a local Phonebook (personal) and a
central Phonebook.
In the local Phonebook you can make up to 100 entries (names
and numbers). The Phonebook entries are stored on the SIM card
in your phone.
Notes:
Phonebook numbers have a maximum of 22 digits and
phone book names have a maximum of 16 characters.
An indication that the Phonebook is full (indicated with a
beep), means that you have to delete an entry before you
can add a new one.
You can also open the Phonebook by programming a Soft/
Hot key. See section “ Hot keys and Soft keys ” on page 100 .