AASTRA 4425 IP Vision (SIP) for MX-ONE User Guide - Manual (Page 95)

Settings
Dialog 4425 IP Vision 96
Programming of ring signal tone character
There are 10 different programmable ring signal tone characters on
your phone, each corresponding to a digit between 0 and 9.
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Select Settings in the top menu (see display).
or Press (see display).
Repeat until the
Ring Character menu is framed.
Select Press (see display).
The current tone character is displayed.
(
0
—
9
) Press a digit to select a new character.
The phone rings with the chosen character.
Note: The menu key Cancel can be used to leave the
menu without saving the changes.
Save Press to store the selected character (see display).
Exit Press to return to the previous menu (see display),
or
Æ
press to return to idle mode.
Settings CallList Contacts CorpDirectory Web
Ring Character
Current ring character: 5
Enter new character (0-9):
Cancel