Polycom Vortex EF2241, Примечание к применению

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The shield of the cable is not connected.
T
IPS FOR
VSX 7000
1.
The volume control for the VSX 7000 controls the incoming far side audio and the local tone
generator. It does not, however, control the sound effects inside the units such as incoming call
ring and the female speech that occurs when you dial a number. This is important to note because
if the volume control is very low, it may appear that the codec audio is operating correctly because
the sound effects are still generated and will be heard in the local room. However, when a call is
connected, the local side may not hear the far side because the local volume control is too low.
Since the local participants heard the sound effects audio at a normal level, it may not be obvious
that the volume control is set too low.
The sound effects volume control can be adjusted in the System, Admin Settings, Audio Settings
page.
2.
If the VSX 7000 is turned off either through the power switch or unplugged from the wall while the
codec is still connected to the Vortex device via the input and output audio cables, a loopback will
occur in the codec. This means that a portion of the audio signal that is sent to the codec from the
Vortex device will be coupled into the signal that is sent from the codec to the Vortex device. This
will cause the local room to hear a reinforced version of their own speech via the local room
loudspeakers. Our recommendation is to leave the codec power on all the time; however, if the
codec must be powered down, we recommend muting either the output channel of the Vortex
device that will feed the input of the codec or the input channel of the Vortex device that is
connected to the output of the codec.
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