AASTRA 600d for Aastra 800 and OpenCom 100 User Guide EN - Manual (Page 18)

Installation
16
Lanyard Fastener
Headset Socket/Bluetooth
®
All mobile units have a 2.5 mm jack socket on the bottom for connecting a headset.
Use recommended headsets only (see Accessories starting on page 145).
The Aastra 620d/630d mobile units have a Bluetooth interface (2.0) for operating cor-
responding headsets. The Bluetooth interface can be used for transmitting audio data
only with a headset.
Safety precaution
Headsets (earphones and headphones) can produce tones which are very loud and
high. When you are exposed to such tones, this can lead to hearing damage. Before
using a headset, please adjust the volume to the lowest possible level. You can make
these settings for cable-connected headsets in the
> Audio > Volume Settings >
Corded Headset menu (see page 109). Adjust the setting directly on the device with
Bluetooth headsets (please consult the device user guide). When telephoning with the
headset, adjust the volume – if necessary – slowly.
Aastra 610d, Aastra 620d: There are
two openings on the upper part of the
bracket. The lower end of the lanyard
can be fed through them (please mount
with the bracket removed). Lanyards are
available as accessories (see page 145).
Aastra 630d: Lanyard fastener and
lanyard are available as accessories. The
screwed on belt clip must be replaced
by the lanyard fastener.