AASTRA 4225 for MX-ONE Telephony Switch - Manual (Page 87)

87 Dialog 4223 Professional/Dialog 4225 Vision
Group features
If you are authorized you can divert all calls to your group, to another
extension or group:
*24*
Dial.
z *
Dial the number of the group to be diverted and press.
z
Dial the extension number of the new anwering position.
# í
Press.
To cancel the Diversion:
#24*
Dial.
z
Dial the number of the group that has been diverted.
# í
Press.