15
CHAPTER 3: Installation
Figure 3-7. Adjusting the Telephone
Compatibility Switch.
3.5.2 S
TEP
2: A
DJUSTING THE
T
RANSMIT
(M
ICROPHONE
) S
OUND
L
EVEL
Change from the headset to the
handset position by pressing the
headset/handset selector (marked
on top of the base with the
30
icon) once. Call someone using
your handset, then switch over to
your headset. Ask for help
evaluating the sound level of your
voice so that the level is the same
as when you used the handset.
Adjust the switch marked 1-8 on
the rear of the base as follows:
Adjust position from 1 to 8
(1 is softest, 8 is loudest) by
first talking in the handset
and then in the headset for
each position. When the
person hears no difference
when you talk into the
handset or headset, you
have the correct setting.
(Most settings will be
between 5-7.) If the best
setting is 7 or 8, move the A-
G switch to position G
(Figure 3-8).
Figure 3-8. Adjusting the Transmit Sound
Level.
3.6 Telephone Compatibility Guide
For optimal performance, adjust
the Telephone Compatibility
switch to correspond with the type
of telephone listed in Table 3-1.
The following chart is only a
partial list of compatible
telephone systems. If your phone
is not in the chart, call Black Box
Technical Support at 724-746-
5500.
1
2
3
4
5
6
7
8
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
A
B
C
D
E
F
G
