6
7
3.2 Clear dial tone adjustment
In order to hear a dial tone, you must select the telephone termi-
nation setting. Complete the following:
1. Put on your headset. Make sure that the headset/handset
switch (H) is set to headset position, and volume (G) is set
to mid-range.
2. Remove the telephone’s handset from the telephone and lis-
ten for a dial tone in your headset.
3. If there is no dial tone or it is not clear, stepwise slide the
termination switch (I) through all 9 settings (along the “A-I”
range), listening for the clearest possible dial tone. If the dial
tone is just as clear in position “A” as in position “I”, leave the
switch in position “A”.
4. When you hear the clearest dial tone, you have located the
correct termination setting.
3.3 Microphone volume adjustment
Adjust the volume of transmitted sound according to an appropri-
ate level. You will need to make a call to adjust the volume.
Complete the following instructions to adjust the volume:
1. Put on your headset and make sure that the microphone is
placed 2 cm from your mouth, and that mute switch (F) is set
to talk position.
2. Make a telephone call to someone who will act as your test
person.
3. While speaking, adjust the microphone volume adjustment con-
trol (D) until your test person hears your voice at an appropriate
level. If you start hearing an echo of your own voice, adjust the
control to a lower level.
3.4 Choosing the audio mode
The GN 8210 operates in one of three user-selectable audio modes to match individual
protection needs and sound quality preferences.
The three audio modes for customised sound enhancement and protection setting:
Europe and Asia/Pacifi c only:
AUDIO MODE
PROTECTION
A
TrebleBoost
• pitch
• high tones accentuated
• advanced protection
• EU Health and Safety compliant
B
CrystalClear
• level
• all tones accentuated
• enhanced protection
• EU Health and Safety compliant
C
TT-4
• bass-rich
• low tones accentuated
• Superior
• TT4 compliant
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