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21
CHAPTER 5: Troubleshooting
• A double beep every five
seconds means that the
mute switch has been
activated. Push the mute
switch again to disengage it.
• A double beep every 10
seconds indicates that you
are out of range. Move
closer to base station to re-
establish the link with the
base.
• If you hear a beep while
holding the volume control
button in the + or - position,
you have met either the
maximum or minimum
volume. Press the volume
control button one time in
the opposite direction.
If you hear a buzz or humming
sound:
• Move the base station
farther away from the
telephone.
If you hear an echo in your headset
when talking:
• Lower your transmit
adjustment. If this makes
the transmit too weak, try
adjusting the Telephone
Compatibility switch setting.
Noise, static, or a weak signal while
away from the base unit:
• You may be out of range;
move closer to the base for a
stronger signal. A double
beep sounds every 10
seconds when out of range.
If you are still having trouble,
please call Black Box Technical
Support at 724-746-5500 for
assistance.
5.2 Accessories
• To prolong operating time
from 12 to 24 hours, an
additional battery can be
purchased (call Black Box at
724-746-5500 for details).
• A hookswitch device is
included (see the separate
Black Box documentation
for part number HS523).
The hookswitch device lifts
the handset from your
telephone, enabling you to
answer and hang up calls
without returning to your
desk.
5.3 Batteries
NiMH (nickel-metal-hydride),
3.6 V, 500 mAH (call Black Box at
724-746-5500 for details).