AASTRA 4425 IP Vision for BusinessPhone User Guide - Manual (Page 74)

Contacts (Phone Book)
BusinessPhone – Dialog 4425 IP Vision 74
z
Save Enter the new name completely and press (see display).
Number Press (see display).
The cursor moves to the end of the number.
Erase Press multiple times to erase the number (see display).
Each time you press the Erase menu key, one digit is deleted. z
Save Change the number and press (see display).
OK Press to save (see display).
The edited name and number are stored in the Phone Book.
Or:
Edit Press to edit the name and number again (see display).