AASTRA 600d for Aastra 800 and OpenCom 100 User Guide EN - Manual (Page 15)

General Information
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(e.g. displaying the call number on the display, displaying connection charges) which
your Aastra 800 / OpenCom 100 communications system provides along with your
mobile unit, may not be available with other manufacturers’ communications
systems. Please consult the corresponding manufacturer’s user guide or contact your
system administrator.
Information on transmission quality
• Due to digital transmission within the frequency range used – even within range
depending on the structural environment – dead spots can result. In this case,
transmission quality can be lessened by increased and brief transmission gaps. A
slight movement outside the dead spot will re-establish the usual transmission
quality. When a caller goes out of range, the connection is disconnected.
• In order to avoid radio-related interference with other electronic devices, we rec-
ommend as great a distance as possible (minimum of 1 m) between the charger or
mobile unit and other devices (e.g. radios, loudspeakers, etc).
• As is the case with any cordless telephone, the mobile unit uses radio signals
which do not guarantee a connection under all circumstances. This is why you
should never completely rely on cordless telephones for essential communication
(e.g. for medical emergencies).