AASTRA DT4x2 for BusinessPhone User Guide EN - Manual (Page 26)

Incoming Calls
BusinessPhone – Cordless DT412/DT422/DT432 26
Mute ringing signal
If the Cordless rings at an inconvenient moment:
Press the Mute key on the right side of the Cordless to
suppress the ringing.
All alert signals, including the vibrator, will silence for this specific
call. See section “ Description ” on page 9 for the location of the
Mute key. æ
Press to answer the call.
Handsfree ä
Press the middle Soft key to answer the call in handsfree
speaking mode.
You are connected to the caller via the loudspeaker and
microphone.
Note: Which key to press depends on the answering
method used, to change the answering method see section
“ Change answering method ” on page 27.
End the call æ
Press.
The display shows the duration of the call.
Note: When a headset is connected to the Cordless, the
button on the headset can be used to end the call.