31BusinessPhone – Dialog 4425 IP Vision
Outgoing Calls
When the connection has been established, the display shows the 
other party’s name and number (if supported by the network).
u Lift the handset 
Note: You can make your calls faster, using Common 
Abbreviated Numbers and by programming your own 
Abbreviated Numbers.
d or í  Press to end the call.
Handsfree
Line ÖÔ or  Â Press without lifting the handset.
z Enter the internal or external number.
When the call is established, you will be connected to the other 
party via the loudspeaker and microphone.
í Press to terminate a handsfree call.
Note: To learn more about other ways to make a call, see 
sections “Abbreviated Numbers” on page 34, “Dial-by-
Name” on page 34, “Contacts (Phone Book)” on page 69, 
and “Call List” on page 37.
Last External Number Redial
When you initiate an external call the system automatically stores all 
the dialled digits, irrespective of whether the call was successful or 
not. Stored numbers can consist of maximum 32 digits.
*** Press to redial the last dialled external number.
Note: You can also redial a number with the Call List, see 
section “Call List” on page 37.