User guide

Installation
23.9.6 Operatio n notice
Accessibility and Voice quality
Bluetooth uses the frequency of 2.45 GHz. WLan, microwave oven and other
devices that use the same frequency can disturb the use of a Bluetooth headset.
Operation Area
Maximum distance between the headset and the telephone is 10 metres
according to standard 1.2. The communication distance between the handset
and headset may vary considerably due to the environment and disturbances
from other 2.45 GHz equipment. Different headsets can also give different
communication distances.
Out of Range
If a c onnection cannot be made with the connected Bluetooth headset the call
is transferred automatically to the telephone. If the Bluetooth headset and
the telephone get out of range from each other the connection is temporarily
lost. The connection is automatically established again when a call is made
or received.
23.10 Portable Device M anager
It is possible to upgrade software and synch
ronize parameters in your DT390
cordless phone with the Portable Device Ma
nager (PDM) software. PDM
exists as a Windows version (Desk PDM
) and as a System version (CPDM),
and is most often used by system admi
nistrators only. Desk PDM can be
used together with the advanced de
sktop charger. The advanced desktop
charger is connected to the PC wit
h PDM software through the network or USB
connectors at the back of the cha
rger, see Figure 17 on page 133.
Figure 17
For more information on PDM or upgrading of your cordless phone, contact
your system administrator.
133
1424-EN/LZT 103 090 Uen A1 2008-10-24