Operation Manual

Installation

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.