User's Manual

Revision: 02/1015 DOK 1643-us 18 of 28
microphone. The microphone remains switched-on as long as the key is pressed. In the event the
existing phone call has been interrupted intentionally or unintentionally, you hear in the CT
communication set two times a descending
sequence of tones. In the telephone mode with
MIC switch, the Bluetooth key serves the following functions:
Accept the call
End the call
Reject the call
Redial
Abort redialing
You can use the CT-Wireless-PTT in lieu of the Bluetooth key; it has equal function.
7.8.1 Accept the call
You hear the ringing tone of incoming calls in the CT communication set.
To accept the call, press briefly the Bluetooth key
.
7.8.2 End the call
In an existing telephone conversation, press briefly the Bluetooth key immediately and consecutively 4
times to end the conversation. You will hear two (2) times a descending
sequence of
tones.
7.8.3 Reject the call
You hear the ringing tone of incoming calls in the CT communication set.
To reject the call, press the Bluetooth key until you hear a double beep
(approx. 2 seconds). The call
is rejected.
7.8.4 Redial
Press the Bluetooth key briefly two (2) times in order to redial the phone number, dialed last from your
cellular phone.
7.8.5 Abort redialing
When you hear the ringing tone in the CT communication set, press the Bluetooth key to abort
redialing.
7.9 Limited telephone mode with MIC switch (mode 3)
The limited telephone mode with MIC switch provides limited telephone functionality. You can hear
without the need of pressing an extra button. For speaking, you must press the Bluetooth key in order
to switch the microphone on. The microphone remains switched on as long as the key is held down. All
other functions, available in mode 2, have to be performed on the cellular phone or you must switch to
another telephone mode.
7.10 Increase the volume
Press briefly the volume-up key to increase gradually the volume in the CT communication set. One
high beep acknowledges each step up. When reaching maximum volume, you hear a double
beep.
7.11 Lower the volume
Press briefly the volume-down key to reduce gradually the volume in the CT communication set. One
low beep acknowledges each step down. When reaching minimum volume, you hear a double
beep.
7.12 Battery status
The LED in the Bluetooth key indicates the status of the battery. The display lights up only for the first
15 seconds after switching the CT-Multi PTT Bluetooth on. Afterwards, you can display the battery
status for 15 seconds by briefly pressing the volume-up or volume-down keys.
LED glows green: fully charged