AASTRA DT292 for MX-ONE User Guide EN - Manual (Page 96)

Installation
DT292 96
Changing the battery
Rechargeable batteries have a limited lifespan. If the standby time
for the cordless phone becomes too low, you should replace the
battery. Please contact your system administrator or supplier for
more information.
Note: Only use the specified batteries (NiMH pack 600
mAh, 3.6 V).
Do not disconnect or exchange the battery unless it must
be replaced. Do not charge the battery outside the phone.
The battery does not contain cadmium and is therefore more
environmentally-friendly than other rechargeable batteries.
However, all batteries should be treated as chemical waste.
Clip
The cordless phone has a clip to attach the phone to your clothes.
To attach the clip to the cordless phone
See section “ Preparing for use ” on page 91 for specific instructions.
To remove the clip from the cordless phone
Note: To minimize wear and tear, we recommend that you
do not remove the clip from the cordless phone too often.
Remove the clip from the back of the phone as shown in the
figure below.