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When USB is Always Enabled, the audio connection to the connected device is
always sending and receiving audio data, unless the audio channel is put on
hold. If User Determined is selected, audio is only sent and received when
[USB On] is selected from the Dialer. Otherwise audio is not being sent or
received, and the dialer screen shows USB Audio as Inactive.
USB Calls Only limits USB audio connections to the connected device only to
cases in which the UC application used identifies USB activities as USB calls.
USB audio can only be sent when a USB call has been detected and the FLX
UC device has been notified about it.
The FLX UC devices support integration of audio control with the operating
system of the attached device, and call control (hang-up and answer) with
Third Party Conferencing Applications. Audio control integration is supported
with Windows 10, Mac OS, and Chrome OS. Call control is supported by using
HID (human interface device) commands on the USB connection. Some UC
applications support HID commands natively and therefore can directly
exchange these commands with the FLX UC device. For other applications the
HID commands need to be transformed into application specific commands.
Please refer to the section on the
FLX UC Device Manager
on more detail on
which applications are supported.
Conference USB and SIP Calls
The FLX UC 1000 or FLX UC 1500 can have two simultaneous SIP VoIP calls
and the USB audio line active at the same time. Any combination of these calls
can be joined into a conference.
To set up a conference call when no calls are active, initiate the first call, then
press the [Conf] button at the bottom of the screen and start the second call.
Both calls will now be active and in a conference call with one another.
To set up a conference call when more than one call is already active, select
one call using the navigation keys, and make it the active call (not on hold).
Then select the second call you wish to include in the conference using the
navigation keys, and press the [Join] button at the bottom of the screen. This
will create a conference call. The third call can be included in the same
conference call by selecting it using the navigation keys and pressing [Join]
again.
