Aastra 415 System Manual page 260

Annex
The function commands can be stored directly on the system phones via Self Ser-
vice Portal or on the function keys via WebAdmin.
Note:
As the Office 10 does not have a text mode, only 3 function commands
can be stored on function keys on this phone. The 3 function commands
are entered using the following keys:
Tab. 135 Function commands on function keys Office 10
Pause 1 second before next action
Control keys function
Activate / deactivate DTMF mode (tone dialling)
260 Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014