
How to Use the Headset Controller
Volume up
Mute microphone indicator
Mute microphone
Volume down
Answer/End button
Off-Hook indicator
Turn on/off microphone AGC
For better user experience,
you may enable/disable
AGC (Audio Gain Control),
follow below instructions
for Windows:
1. Access "Sound
Control Panel".
Note: This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation. If this
2. Go to "Recording" tab
and double click on
"GUV3005".
3. Access to "Custom"
tab and check/un-
check AGC, to enable/
disable AGC.
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Any Changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority
to operate the equipment.
equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for
help.
1. Always store the headset with the power off and safely
protected.
2. Avoid storage at extreme temperatures (above 25°
C/77°F or below -20°C/-4°F). This may adversely af-
fect the headset.
Grandstream Networks, Inc.
126 Brookline Ave, 3rd Floor
Boston, MA 02215 USA
Voice: (617) 566-9300
Fax: (617) 249-1987
www.grandstream.com
FCC ID: YZZGUV3005
For Certification, Warranty and RMA information, please visit
www.grandstream.com
Check: Enable
Uncheck:Disable
T
ap
t
he Volume up or Volume
down bu
tt
on
T
ap
t
he mu
te m
icrophone bu
t-
to
n
T
ap
t
he Answe
r/En
d bu
tt
on
,
Blue ligh
t
on
W
hen available
, G
reen ligh
t
on
.
Tap the Answer/End button,
Red light on.