Extron electronics DMP 128 Plus User Manual page 53

USB Input
Double-click the Aux input gain block and hover the mouse over
available USB audio channels. Select one of the USB channels to insert it as the source for
the selected Aux input.
The four USB channels appear as two pairs of stereo channels:
• left and right channels are for communications audio from a connected
USB 1
computer.
• left and right channels are for playback audio from a connected computer.
USB 2
The DMP 128 Plus appears both as a communications and as a playback audio device in
the operating system of the host computer. Select the DMP 128 Plus as the output device
for both communication audio and playback audio to route audio from the host computer to
the DMP 128 Plus via the rear panel USB audio port.
Figure 77. Aux Input USB Selection
VoIP Input
Double-click the Aux input gain block and hover the mouse over
eight available VoIP lines. Select one of the VoIP lines to insert it as the source for the
selected Aux input. Aux inputs with VoIP lines selected as the source receive signal via the
far end of the VoIP network. VoIP lines can be assigned to Aux channels before the line
is registered with the call server; however, VoIP lines must be registered with a call server
and configured from the DMP 128 Plus VoIP Web page before these inputs can function
properly (see DMP 128 Plus VoIP Web Page
single line can be placed on multiple Aux inputs for conference calling capabilities.
NOTE: When a VoIP line is assigned as the source or removed from Aux input, the same
VoIP line is assigned to or removed from the corresponding Aux output.
Figure 78. Aux Input VoIP Line Selection
USB...
VoIP...
on page 167). Multiple appearances of a
DMP 128 Plus • DSP Configurator Software
to display the four
to display the
45