AASTRA DT4x2 for MD Evolution User Guide EN - Manual (Page 22)

DT4X2 General Description
MD Evolution – Cordless DT412 / DT422 / DT432 22
11 Alarm key (only DT422 and DT432)
Sending alarms and testing the Alarm function. See section “ Alarm ”
on page 116.
12 Loudspeakers
One loudspeaker for ring signal and one for Loud speaking. See
section “ Handsfree Speaking ” on page 49.
Please note: The phone may retain small magnetic articles
around the ear piece region.
13 Charging connector
See section “ Installation ” on page 145.
14 Headset connector
See section “ Installation ” on page 145.
Note: Headset connector is optional.