Konftel 800 Installation & Administration page 127

BLUETOOTH AND USB CONNECTION
down to Level 0 only when the phone is connected to a USB host. Here, the
phone displays the
When you start a call, the phone automatically sets the volume to Level 10. During
an active call, to manually increase the volume up to Level 12, tap the
or icons. The phone shows the volume bar on the screen to reflect
Volume Down
the volume change.
If you set the volume lower than Level 10, the next call starts with this new
level. If you increase the volume to Level 11 or Level 12, the phone automatically
decreases the volume to Level 10 for the next call.
The phone does not show the volume bar when it automatically sets the
volume to Level 10 for a call.
Volume synchronization with USB host
When you connect Konftel 800 to the USB host and select it as an audio device,
the phone synchronizes its volume level with the connected USB host.
Konftel 800 also synchronizes the volume level with the USB host when it
switches between Playback and Call mode. If you receive a call during audio
playback, the phone automatically changes the volume level for the call. The
phone synchronizes the volume with the USB host and applies the Call mode
volume. When the call ends, the phone changes the volume back to the Playback
mode volume.
Konftel 800 supports volume synchronization if the USB host has Windows 10
as its operating system.
You can adjust the volume level either on the phone or on the connected USB
host. When you set the maximum or the minimum volume level, the USB host
responds as follows:
• If you decrease the phone volume to the lowest level, the volume on the USB
host turns off.
• If you increase the phone volume to the highest level, the volume on the USB
host changes to 100. This is the highest level for the USB host permitted.
Volume synchronization in Daisy chain mode
If you adjust the volume on the USB host for Konftel 800 acting as the main phone
in a Daisy chain, the volume on the expansion phone changes accordingly. The
expansion phone reflects the change showing the volume bar on the screen.
If you change the volume level on Konftel 800 acting as an expansion phone
in a Daisy chain, the volume on the main phone and the USB host changes
accordingly.
icon and the audio on the phone is muted.
Volume Off
127
Volume Up